tag:blogger.com,1999:blog-64404105863345963702024-03-13T09:50:02.474-05:00Learn By MakingDedicated to Making/Hacking as a method for learning and teaching.Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.comBlogger92125tag:blogger.com,1999:blog-6440410586334596370.post-5654887170155323262021-05-13T20:34:00.000-05:002021-05-13T21:54:16.802-05:00Project: Bat Detector<p> </p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5PykxPGg-3Xz78bsXCdLVEZ5EahSba9Gs1iR9nTQnFB8fW4U7lGwyEau6qh-xUSpcCCKrAm8ptI5JTvd_AQDnBIH4gBSN4Ba3rZtb4nteY7OSVCmcLIYzyacpjc6t3ter-tKhm9xKexY/s543/EasternRedBat.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="512" data-original-width="543" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5PykxPGg-3Xz78bsXCdLVEZ5EahSba9Gs1iR9nTQnFB8fW4U7lGwyEau6qh-xUSpcCCKrAm8ptI5JTvd_AQDnBIH4gBSN4Ba3rZtb4nteY7OSVCmcLIYzyacpjc6t3ter-tKhm9xKexY/s320/EasternRedBat.jpeg" width="320" /></a></div>
<p></p><p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
Summer is almost upon us and with it comes the biting insects that we
all love. While we may not like all the gnat’s, mosquitoes, fly’s,
etc., biting us but there are plenty of other animals that look
forward to this time since for them it is a feast, this includes
</p>
<ul><li><p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
Birds - from swallows to hummingbirds</p>
</li><li><p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
Amphibians and reptiles - like frogs and toads</p>
</li><li><p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
Arachnids - including garden spiders and my favorite - jumping
spiders</p>
</li><li><p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
And, most importantly for this post, Bat’s</p>
</li></ul>
<p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
Bat’s, like most animals, communicate through vocalizations. The
difference with bats is that many of the vocalizations they make are
beyond the range that we can hear (many of their calls are in the
ultrasonic range).
</p>
<p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
In this project I’ll be using different techniques to convert
ultrasonic bat calls from ultrasonic frequencies down to frequencies
that we can hear. Human hearing range extends from 20Hz up to 20kHz
(if you are young), but bat vocalizations extend from 12kHz up to
160kHz.
</p>
<p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
The main goals of this project are to:</p>
<ul><li><p style="margin-bottom: 0in;">listen to bats</p>
</li></ul>
<ul><li><p style="margin-bottom: 0in;">locate bats\</p>
</li><li><p style="margin-bottom: 0in;">identify bat species</p>
</li></ul>
<p style="background: transparent; font-weight: normal; line-height: 100%; margin-bottom: 0in;">
There are 2 main methods used to convert ultrasonic bat calls to
frequencies within our range of hearing.
</p>
<ul><li><p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
<span style="font-weight: normal;">The </span><b>First</b> <span style="font-weight: normal;">approach
uses </span><span style="font-weight: normal;">t</span><span style="font-weight: normal;">he
heterodyne </span><span style="font-weight: normal;">method. </span><span style="font-weight: normal;">This
involves</span><span style="font-weight: normal;"> combin</span><span style="font-weight: normal;">ing
</span><span style="font-weight: normal;">an internal </span><span style="font-weight: normal;">reference
</span><span style="font-weight: normal;">frequency with a detected
sound. The output </span><span style="font-weight: normal;">that you
her </span><span style="font-weight: normal;">is the difference
between the </span><span style="font-weight: normal;">two
frequencies</span><span style="font-weight: normal;">. </span><span style="font-weight: normal;">A
</span><span style="font-weight: normal;">simple</span><span style="font-weight: normal;">
example concer</span><span style="font-weight: normal;">ns</span><span style="font-weight: normal;">
a 42kHz bat call. The heterodyne technique would compare the call to
a 40kHz reference frequency and the audible</span> <span style="font-weight: normal;">output
would be a 2 kHz tone</span></p>
</li><li><p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
<span style="font-weight: normal;">The </span><b>Second</b> <span style="font-weight: normal;">approach
divides the detected frequency. Using this technique the frequency
is usually divided by 16 – so a 42kHz bat call would come out as a
2.6kHz tone.</span></p>
</li></ul>
<p style="background: transparent; line-height: 100%; margin-bottom: 0in;">
<span style="font-weight: normal;">Each method has it’s pro’s and
con’s. Before we can look at them I’ll f</span>irst have to get
the circuits working. Which I hope to show in the next post.</p>
<p><style type="text/css">p { margin-bottom: 0.1in; line-height: 115%; background: transparent }a:link { color: #000080; so-language: zxx; text-decoration: underline }</style></p>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-38451893700130066982021-05-03T18:27:00.000-05:002021-05-03T18:27:22.560-05:00Fungus is Amongus
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5W3SEvIH8gEqUl1js5WBOpUF0YoldI0DpHChLCdMcyuftsSdG_DiPhpfSR9U2Dr1a82HvlKRUu2G4JdZGXS5n7QlsB-i6uJs9xjY3Mbw_0sH_wFzhqhyDNEj8FfYW2Vdkt9hvNr1Cv8o/s970/BlueOysterMushroomsNorthSpore.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="600" data-original-width="970" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5W3SEvIH8gEqUl1js5WBOpUF0YoldI0DpHChLCdMcyuftsSdG_DiPhpfSR9U2Dr1a82HvlKRUu2G4JdZGXS5n7QlsB-i6uJs9xjY3Mbw_0sH_wFzhqhyDNEj8FfYW2Vdkt9hvNr1Cv8o/s320/BlueOysterMushroomsNorthSpore.jpeg" width="320" /></a></div><p>Over
this this past year I’ve developed a renewed interest in mycology.
This current experiment developed out of my renewed interest and my
continuing fascination<span style="color: black;"> </span><span style="color: black;">with</span><span style="color: black;">
</span>mycology.</p>
<p>My current experiment involves growing Blue Oyster Mushrooms
indoors using the Monotub technique adapted for use with sawdust as a
substrate (growth medium).
</p><p>This video summarizes the procedure and technique for setting up a Monotub (<a href="https://youtu.be/qjfpEW5IHp4">The Complete Monotub Tek Cultivation Walk-through</a> </p><p>I have seen oyster mushrooms grown on manure compost in Monotubes or in bags of sawdust or straw as well as outdoors
on hardwood logs. Since I have no access to a yard and since I have used the Monotub technique in the past I'm hoping that it will work with using sawdust as a substrate (growth medium). I haven't seen anyone else growing them on sawdust in a Monutub and there may be good reasons for this though I haven't come across any yet. Keeping my fingers crossed.</p><p>I am using standard storage containers, like in the video linked above. For the growing medium I am using 10 cups of hardwood sawdust pellets, 2 1/2 cups wheat bran, 9-10 cups of spring water along with 1/2 of a 6lb bag of grain spawn. All of this was mixed up by hand in a 5 gallon bucket and transferred to one storage tub. I repeated the process for the second tub. </p><p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfUjuwAChHrLjvuLgWaREggA7A_FgH0HWgmWFeFmCp0x6-kDVp9Id3geEDzn08qt6WCvLKaD-85mYQLv91Dc12vnhtuGJk3erXrnodemGjcVLQlXqXnRAMZdFP2UJ4BlSXhKWu1Bva6lk/s2048/20210427_001215.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfUjuwAChHrLjvuLgWaREggA7A_FgH0HWgmWFeFmCp0x6-kDVp9Id3geEDzn08qt6WCvLKaD-85mYQLv91Dc12vnhtuGJk3erXrnodemGjcVLQlXqXnRAMZdFP2UJ4BlSXhKWu1Bva6lk/s320/20210427_001215.jpg" width="320" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">tubs with sawdust and spawn<br /></td></tr></tbody></table></p><p>Pictures at 5 days after inoculation. </p><br /><p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjkKPL-2i16WF6lOOmqkP6P0tSuGkC4VBjH1aqksNfh4NilBBLUl14vaDH91oJVn33UeaF4lF1iWKbvsLLw8674a8eke1IbJIH39xEejwXGYfrs_XCazUJi0W0ih4VzzIXkeR573T5tTa8/s2048/20210502_171207.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjkKPL-2i16WF6lOOmqkP6P0tSuGkC4VBjH1aqksNfh4NilBBLUl14vaDH91oJVn33UeaF4lF1iWKbvsLLw8674a8eke1IbJIH39xEejwXGYfrs_XCazUJi0W0ih4VzzIXkeR573T5tTa8/s320/20210502_171207.jpg" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">tub fully colonized with mycelium<br /></td></tr></tbody></table></p><p style="margin-bottom: 0in;">After 5 days I added a layer of casing, about 1 ½ inches of coconut husk fiber hydrated to “field
capacity”. "Field capacity" means that when you squeeze a handful of the material you should get a drip or 2 of water out. Oyster mushrooms will fruit without a casing layer being added, unlike many other mushrooms. I added the casing layer specifically to help maintain moisture and humidity levels within the tub.<br /></p><p style="margin-bottom: 0in;"><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5SAwLvNLksOg0iDFR1REFPBPEkh2MfTudoZ8nezwrrYSJIHonfRlojpLYOZnkFRcQkt4U-AMDfTHvebvLwtTxFr_C803pgnfGgwsw-SKrZGN88j8xfkwYy8pawomhQdH1B_yzeU5EpAM/s2048/20210502_171148.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5SAwLvNLksOg0iDFR1REFPBPEkh2MfTudoZ8nezwrrYSJIHonfRlojpLYOZnkFRcQkt4U-AMDfTHvebvLwtTxFr_C803pgnfGgwsw-SKrZGN88j8xfkwYy8pawomhQdH1B_yzeU5EpAM/s320/20210502_171148.jpg" width="320" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Prep for adding casing layer</td><td class="tr-caption" style="text-align: center;"><br /></td></tr></tbody></table> <table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj2b3VlW5gY2cJAN6Vch5McPaMsY6QnXeRwYtk-YM0fkMyHcMB9yxStJg6NNwlzztv1oPSCAmQRTfH2hnyvvWrFC8vPV5BVFNx-e3TNlfdv0eMX4n0dGcSVWyKokPbiHs5G-ljNyCXGgxA/s2048/20210502_174904.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj2b3VlW5gY2cJAN6Vch5McPaMsY6QnXeRwYtk-YM0fkMyHcMB9yxStJg6NNwlzztv1oPSCAmQRTfH2hnyvvWrFC8vPV5BVFNx-e3TNlfdv0eMX4n0dGcSVWyKokPbiHs5G-ljNyCXGgxA/s320/20210502_174904.jpg" width="320" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">After adding casing layer<br /></td></tr></tbody></table><br />Now that the mycelium has fully colonized the sawdust substrate and I've added a casing layer of hydrated coconut fiber it is time to ensure correct conditions for fruiting (the fruit being a mushroom).</p><p style="margin-bottom: 0in;">The most important environmental considerations in growing mushrooms are: light exposure, ventilation/air changes, humidity and temperature. Each type of mushroom requires different conditions. I've listed the specifications for "fruiting" for Blue Oyster Mushrooms in the chart below (this is a compilation of information from different sources and is not meant to be exact). <br /></p><p style="margin-bottom: 0in;"></p><p style="margin-bottom: 0in;">
</p><p>The simplest way to maintain these conditions is to open the tubs and use the lid to fan them several
times a day along with using a mist sprayer to add water after each
ventilation while keeping them in an area that is the correct temperature.</p><p>My next Fungal post will address controlling these conditions using sensors and micro-controllers.<br /></p>
<p style="margin-bottom: 0in;"><style type="text/css">p { margin-bottom: 0.1in; line-height: 115%; background: transparent }a:link { color: #000080; so-language: zxx; text-decoration: underline }</style></p><p style="margin-bottom: 0in;">The main supplies that I've used in this experimental test are listed below:</p><p style="margin-bottom: 0in;">
</p><p></p><p>
</p><p style="margin-bottom: 0in;">
<a href="https://northspore.com" target="_blank">North Spore</a> </p>
<ul><li><p style="margin-bottom: 0in;">10lbs Hardwood sawdust pellets</p>
</li><li><p style="margin-bottom: 0in;">“Harbor Blue” Pleurotus
ostreatus (<a href="https://northspore.com/collections/grain-spawn/products/discount-grain-spawn" target="_blank">discount grain spawn</a>)</p>
</li></ul>
<p style="margin-bottom: 0in;">Local hardware store and
grocery store</p>
<ul><li><p style="margin-bottom: 0in;">2 gallons spring water (Ice
Mountain)</p>
</li><li><p style="margin-bottom: 0in;">wheat bran (Bobs Red Mill)</p>
</li></ul>
<p><style type="text/css">p { margin-bottom: 0.1in; line-height: 115%; background: transparent }a:link { color: #000080; so-language: zxx; text-decoration: underline }</style>Further information on growing Oyster Mushrooms can be found all over the internet. A few reputable sources are listed below:</p><p>
</p><p style="margin-bottom: 0in;">
<a href="https://extension.psu.edu/cultivation-of-oyster-mushrooms">https://extension.psu.edu/cultivation-of-oyster-mushrooms</a></p>
<p style="margin-bottom: 0in;"><a href="https://smallfarms.cornell.edu/projects/mushrooms/indoor-production/">https://smallfarms.cornell.edu/projects/mushrooms/indoor-production/</a></p>
<p><style type="text/css">p { margin-bottom: 0.1in; line-height: 115%; background: transparent }a:link { color: #000080; so-language: zxx; text-decoration: underline }</style></p><p style="margin-bottom: 0in;"><style type="text/css">p { margin-bottom: 0.1in; line-height: 115%; background: transparent }a:link { color: #000080; so-language: zxx; text-decoration: underline }</style></p>
<p><style type="text/css">p { margin-bottom: 0.1in; line-height: 115%; background: transparent }a:link { color: #000080; so-language: zxx; text-decoration: underline }</style></p>
<style type="text/css">p { margin-bottom: 0.1in; line-height: 115%; background: transparent }a:link { color: #000080; so-language: zxx; text-decoration: underline </style>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-59496549758414585702021-03-25T20:37:00.005-05:002021-05-13T21:59:59.023-05:00Project Shocker/Zapper Training Knife<p></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjoQLe8mn6cercgFoOk5v1iThRmYcGB1iF2x5CmcPytdPT32nmlgTyFPrWA25rpKYiK0SvGpSGL5xRaFD_3-k4ezXKB1VPs8kv_5nJr8oeN1d3fEdwOGcdXSr64NzT_xsuMcCC3pIj5dpE/s1024/combatknife.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="768" data-original-width="1024" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjoQLe8mn6cercgFoOk5v1iThRmYcGB1iF2x5CmcPytdPT32nmlgTyFPrWA25rpKYiK0SvGpSGL5xRaFD_3-k4ezXKB1VPs8kv_5nJr8oeN1d3fEdwOGcdXSr64NzT_xsuMcCC3pIj5dpE/s320/combatknife.jpeg" width="320" /></a></div><br />(This is a potentially dangerous device so home experiments are not recommended - it is far safer to use commercial products that have been tested and certified as safe).<br />
<p></p><p>I wrote this up a few years ago and it is still on my back burner as something that could be a useful training tool.</p><p><br />
Having an extensive background in fitness training and martial arts (especially Filipino and Thai martial arts) I was exited to see a very useful training on Hack Your Brain - the <a href="http://www.shocknife.com/information.php" target="_blank">ShocKnife</a>. In the past I've used wooden blades, foam blades, aluminum training blades, rubber blades and even ratan blades (while wearing padded armor) and even real (live) blades when doing drills. I've always been concerned since it wasn't always obvious if I'd been hit and so was the training/sparring I was doing effective?<br />
<br />
The <a href="http://www.shocknife.com/information.php" target="_blank">ShocKnife</a> seems to solve this, or at least makes it more difficult to ignore that you've been tagged in some way. Seeing it, I really want one (or better yet 2 for sparring) but at a price tag of $200 each it is unlikely.<br />
<br />
After some searching I found that a few other people made attempts at DIY versions:<br />
<i>https://fightsciencesresearchinstitute.wordpress.com/2011/08/29/diy-electric-training-knife/</i><br />
<i>http://www.martialmakers.com/?p=89 </i><br />
<br />
Seeing these attempts, and looking at the actual specifications of the <a href="http://www.shocknife.com/information.php" target="_blank">ShocKnife</a> I can see a few issues:<br />
</p><ul>
<li>total power delivered</li>
<li>current delivered</li>
<li>voltage delivered </li>
</ul><p>
<i> </i><br />
For safety we need minimal current levels (even 30mA can kill at the right voltage level).<br />
Voltage needs to be high enough for the shock to get through clothin.<br />
<br />
Looking at the commercial product <a href="http://www.shocknife.com/information.php" target="_blank">ShocKnife </a>the StressBlade is their entry level trainer and the specifications they list are </p><ul style="text-align: left;"><li>7500Volts, less than 1mA (7.5kV at 0.75mA which comes to 5.625Watts of Power.</li></ul><p>
Reviewing the Specifications of the Fly Swatter Racquet and a standard commercial Stun gun. Before I reveal the actual specs I will say that both of these devices, without alterations, can produce burns and other injuries - the <a href="http://www.shocknife.com/information.php" target="_blank">ShocKnife</a> seems to not do this.<br />
<i>Specs</i><br /></p><ul style="text-align: left;"><li>
BugZapper Raquet - 2AA bateries (3V) seem to be a few hundred volts (maybe in the thousands) - with a high milliamp output</li><li>Stun Guns seem to use 100,000's to 1,000,000's Volts at a few milliamp's and the ones used by law enforcement can cause significant burns<br /></li></ul><p>For a DIY solution we definitely need to ensure a very low current output but at an output frequency that is irritating while being harmless to human tissue.</p><p>I am still quite tempted to just purchase one of the commercially available StressBlade. It isn't something I actually need for training but just something I feel would add to knife defense training.<br />
<br />
Resources:<br />
<a href="http://www.shocknife.com/information.php" target="_blank">Shocknife</a><br />
<a href="http://www.voltagemultipliers.com/pdf/Multiplier%20Design%20Guideline.pdf" target="_blank">Voltage Multiplier Design Guide</a><br />
<br /></p>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com1tag:blogger.com,1999:blog-6440410586334596370.post-46746129803942956262021-03-25T19:34:00.000-05:002021-05-02T01:17:19.344-05:00Multiple Project Updates Coming Soon<p>I've been working to update a number of projects that have been sitting on my to do shelf for way to long. In the next few weeks I'll be doing write ups on the following:</p><ul style="text-align: left;"><li>Rebuild of my 12kV (~900Watt) Spark Gap Tesla Coil (Old Sparky). Mainly a build of a new DIY low inductance High Voltage capacitor that should allow for better resonance and energy transfer (and bigger arc's).<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqEpFXDg4cGePJwUXcA36LfP19MbQvKiaH5jVhbSWWqZWtrSPiq-PDQ64pxZMd9_xl4obdpkcD_gvvTZNuI_oDpQs6oFW-3jEj8aLEgQtIzsXyv9dUQ2bhKsaPlNoThXMb_Na-lxLzSKY/s2048/20210322_152219.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqEpFXDg4cGePJwUXcA36LfP19MbQvKiaH5jVhbSWWqZWtrSPiq-PDQ64pxZMd9_xl4obdpkcD_gvvTZNuI_oDpQs6oFW-3jEj8aLEgQtIzsXyv9dUQ2bhKsaPlNoThXMb_Na-lxLzSKY/s320/20210322_152219.jpg" /></a></div><br /></li><li>My DRSSTC build using OneTesla parts - I couldn't afford the complete OneTeslaTS kit so many of the parts I've fabricated on my own.<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgFLDoSvmYVSZbVDhgSayp6q6OQ8K-cD7PmsHP_Q98FO72MZFknTm7HNx4R6eXEFGrIDLwzA_9aSbmJfeKmrs2Tjca0MA5bqxCFkgSpjLrLQYLzVdvEpmdieRTKzOTENykNpHTMCZ-ltcA/s2048/20210315_190059.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgFLDoSvmYVSZbVDhgSayp6q6OQ8K-cD7PmsHP_Q98FO72MZFknTm7HNx4R6eXEFGrIDLwzA_9aSbmJfeKmrs2Tjca0MA5bqxCFkgSpjLrLQYLzVdvEpmdieRTKzOTENykNpHTMCZ-ltcA/s320/20210315_190059.jpg" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEic_V07fSBu-J8gVqBdpnusJCaS1R9y8EpGzqEQdrF4e6pVWtHb7lhcYeFcfnZnJ7PnlT6p1HCL6S84jfbyimp_PBIcamtGm4LNsedvrsF8R6iIHUUzF8CabzUakk6ReJmRq51ZVGUlFto/s2048/20210314_215402.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEic_V07fSBu-J8gVqBdpnusJCaS1R9y8EpGzqEQdrF4e6pVWtHb7lhcYeFcfnZnJ7PnlT6p1HCL6S84jfbyimp_PBIcamtGm4LNsedvrsF8R6iIHUUzF8CabzUakk6ReJmRq51ZVGUlFto/s320/20210314_215402.jpg" width="320" /></a></div><br /></li><li>Further work on my Voight Kampff machine - its been a long break but I'm back at it <div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-PdG6khtTfHEEG86VVxk2PkNk9n6ncpQkcunKDLnsqfjwVHIc5hOprcQj1ZyuQX8Pq1x6Qu2q3kcdu3SlUobNqUbI5Ev5TjRByNpepJ9QjMNCdQXaqMptsbkQe7r7fbtmmSkNbZP8YAo/s2048/20201215_212022.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-PdG6khtTfHEEG86VVxk2PkNk9n6ncpQkcunKDLnsqfjwVHIc5hOprcQj1ZyuQX8Pq1x6Qu2q3kcdu3SlUobNqUbI5Ev5TjRByNpepJ9QjMNCdQXaqMptsbkQe7r7fbtmmSkNbZP8YAo/s320/20201215_212022.jpg" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhN7pW-E8ygJNgzlWzuY5ry5KNsdCd3R0BJZvkVLO3KSnzdgQALAAYn1_oNx4E-84L3ixaavzGQtFbqkfB8ThgzWqvDJo0QnF86t1rvdfJkCErNinw6wlOJGpL-RPF0vdT_VXmofaclsJQ/s2048/20210213_152244.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhN7pW-E8ygJNgzlWzuY5ry5KNsdCd3R0BJZvkVLO3KSnzdgQALAAYn1_oNx4E-84L3ixaavzGQtFbqkfB8ThgzWqvDJo0QnF86t1rvdfJkCErNinw6wlOJGpL-RPF0vdT_VXmofaclsJQ/s320/20210213_152244.jpg" width="320" /></a></div><br /><br /></li></ul>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-11435386834586166172020-05-26T14:02:00.002-05:002020-05-26T14:02:29.809-05:00COVID Isolation Project #14 PPE Tuesday AGAINCOVID Isolation Project #14 PPE Tuesday AGAIN<br /> I'm gearing up to produce a lot of face masks this week for the <a href="https://www.illinoisppe.org">Illinois PPE Network</a>.
They gave me a lot of fabric to work with. To make some parts of the process easier I 3D-printed
some pieces including a rotary cutter in Onshape (since all local sources were
sold out even though they had blades). I worked up a simple design that
I could 3D-print and assemble with parts I had on hand. (<a href="https://cad.onshape.com/documents/6646304ecca5aa5cdd489231/w/a0df85d9d1a23a676ab06a1c/e/e3c49d543abb5853815e18d3" target="_blank">Rotary Blade Cutter</a>). <br /><div> I'm working on this project concurrently with my Tesla Coil upgrade.</div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXSzVUqNNF3ozfWcn463Ofr6fHMxx2kwBhqRQL46Er-DWZbha4e1oAiiSyaFZ07uFwbs3bAZMOGMQI7BKW5Enmpl-4YeLN5d5jhtWZpxZpgbVNvomU3Xg4xVx8Dlw8bSQm2-1d9tcAX9Y/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2448" data-original-width="3264" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXSzVUqNNF3ozfWcn463Ofr6fHMxx2kwBhqRQL46Er-DWZbha4e1oAiiSyaFZ07uFwbs3bAZMOGMQI7BKW5Enmpl-4YeLN5d5jhtWZpxZpgbVNvomU3Xg4xVx8Dlw8bSQm2-1d9tcAX9Y/s320/20200526_134214.jpg" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNxA949I3QNjnH58u42GsGwox1THDn1zALbJMtJ6YCMA21bqTj23WcFCTfFQvWTZxizU9uCRyJF16HxyeliozcUmAtdCLLZMC8DHZhB8szNkNbMK8E-XBI8y2geOIJFuUKTJpV8m4Lslo/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2448" data-original-width="3264" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNxA949I3QNjnH58u42GsGwox1THDn1zALbJMtJ6YCMA21bqTj23WcFCTfFQvWTZxizU9uCRyJF16HxyeliozcUmAtdCLLZMC8DHZhB8szNkNbMK8E-XBI8y2geOIJFuUKTJpV8m4Lslo/s320/20200526_134227.jpg" width="320" /></a></div><div><br /></div>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-19133730451090124602020-05-25T16:04:00.001-05:002020-05-25T16:04:38.822-05:00COVID Isolation Project # 13 - Tesla Coil Upgrade<br /><div> My Original big
coil, "Old Sparky", needs a new high voltage capacitor. Since I do not
have the cash to buy one I'm making another one. At a minimum it needs
to handle 12kV. I definitely won't finish it today but when it is done
it will likely result in 4' arc's off of this old spark gap coil. First
pic is the old capacitor, next is the supplies for the new on, spark gap
for coil, power supply (outputs 6kV peak to peak), voltage doubler
(increases it to 12kV), variac to control input voltage and finally Old
Sparky. I'll post video when it's working at full capacity again
(hopefully by this weekend).</div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWXqQilJgi0aTJky7-vyPZdD1fuiCFMlsLDcfEXCmZhamlWlyarjNmhhzQV9Cdu0gVbfCDSf8kyW2awHjFYDnOFjP-oJAggfa6-nkCDV3Aq6Ib5pXKy5FY8e3xPHRT_EJYWqP6cHDxa1s/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2448" data-original-width="3264" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWXqQilJgi0aTJky7-vyPZdD1fuiCFMlsLDcfEXCmZhamlWlyarjNmhhzQV9Cdu0gVbfCDSf8kyW2awHjFYDnOFjP-oJAggfa6-nkCDV3Aq6Ib5pXKy5FY8e3xPHRT_EJYWqP6cHDxa1s/s320/20200525_152747.jpg" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfPTtEaepZpuNa3we40erYdotoqLAMEkhfqo5JCDEU2a-C6pB_449aPv4vAsWyrkuZXmMrkuQT7daJskM7znAUDzkFzVdbjD_uIQczcYJnolIjsbLHj1D-KiQQzbGrUCJafBsaXs4LOZw/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2448" data-original-width="3264" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfPTtEaepZpuNa3we40erYdotoqLAMEkhfqo5JCDEU2a-C6pB_449aPv4vAsWyrkuZXmMrkuQT7daJskM7znAUDzkFzVdbjD_uIQczcYJnolIjsbLHj1D-KiQQzbGrUCJafBsaXs4LOZw/s320/20200525_153603.jpg" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj42c3fYglqPfBgpR8k1rsteHa_Nacg-e-FCfAfHXPMotTSOfIHmas4RUGT2do6szMYLjM_f88iaSQN7Kbo4KTWyhrw0BjV-glo1U0FDgDFxRZ6MtghOhcT0-GIXD9Y5mUQ4GZ-5_-tWqk/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2448" data-original-width="3264" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj42c3fYglqPfBgpR8k1rsteHa_Nacg-e-FCfAfHXPMotTSOfIHmas4RUGT2do6szMYLjM_f88iaSQN7Kbo4KTWyhrw0BjV-glo1U0FDgDFxRZ6MtghOhcT0-GIXD9Y5mUQ4GZ-5_-tWqk/s320/20200525_153608.jpg" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiLYR2qGDoVCE68XRFoyfbd3SxA-r_dtxc6rhveUFMY-jWuv7FVaGuuOpyUQXMA0CRQOvdE1eGAFrFXWcExYi54ypg8YJ7nxKpTRFnYtroPMQBEHtvlXeBCHN0Yzeidko87-rCRBEmob3I/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2448" data-original-width="3264" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiLYR2qGDoVCE68XRFoyfbd3SxA-r_dtxc6rhveUFMY-jWuv7FVaGuuOpyUQXMA0CRQOvdE1eGAFrFXWcExYi54ypg8YJ7nxKpTRFnYtroPMQBEHtvlXeBCHN0Yzeidko87-rCRBEmob3I/s320/20200525_153613.jpg" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGarpLUyIc7ygjoMY-v6GITxHlbkZ_Jc0xuAvv47JugAaBmBjE7c0eNXktMQmjxhrX6VL3MEsMuvdJ0ZRZxjaH0zCDobZRZ25gW3DMXby8gOwDLrGUuHNQHUtCgetkUKX92EBPsL40Y7M/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2448" data-original-width="3264" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGarpLUyIc7ygjoMY-v6GITxHlbkZ_Jc0xuAvv47JugAaBmBjE7c0eNXktMQmjxhrX6VL3MEsMuvdJ0ZRZxjaH0zCDobZRZ25gW3DMXby8gOwDLrGUuHNQHUtCgetkUKX92EBPsL40Y7M/s320/20200525_153618.jpg" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtIVDuQlFbKdqBDshjNKZvhySV6wnvv7NNst2bwn5vCPN9FWGyeBcPc5s8aP8BLMmTYfBLnlz73d5S_0aoQ4QUpJv20zXU7J0j3XqZwIxZMwkSEW3gRrBMWqGv9WQde_fQfL24JfVdP-k/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="3264" data-original-width="2448" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtIVDuQlFbKdqBDshjNKZvhySV6wnvv7NNst2bwn5vCPN9FWGyeBcPc5s8aP8BLMmTYfBLnlz73d5S_0aoQ4QUpJv20zXU7J0j3XqZwIxZMwkSEW3gRrBMWqGv9WQde_fQfL24JfVdP-k/s320/20200525_153856.jpg" /></a></div><div><br /></div>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com1tag:blogger.com,1999:blog-6440410586334596370.post-49954006696892434052020-05-01T20:56:00.000-05:002020-05-01T20:57:10.850-05:00COVID Isolation Project #3- A Better Portable Harmonograph<br />
What is a Harmonograph? It is much simpler to show what it
does than explain the math and theory behind what it does so here is
my current design in action:<br />
<div class="separator" style="clear: both; text-align: center;">
<iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.blogger.com/video.g?token=AD6v5dwceMakGRsq7vOc4gnChfObHq7lm7XDcQJ56BSDgGeur0R095QTpqGFqJgW8cYQDbPzWHMWrgXTrVqJtNXieg' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
<br />
Some drawing examples:<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjfo9pqsaukpi3lvNoUTy4HElb5VB-_1PezhIwAYEcyAu5LNf-Cy5J-nLCvAzrauOkX5gBobThAy6xueH_6uAmL-COisu0SXBwvHlbUlxJ4WMYYo9rAcbGFBfWgzfc3lPNOaYI3_pe8t0/s1600/20200501_143730.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjfo9pqsaukpi3lvNoUTy4HElb5VB-_1PezhIwAYEcyAu5LNf-Cy5J-nLCvAzrauOkX5gBobThAy6xueH_6uAmL-COisu0SXBwvHlbUlxJ4WMYYo9rAcbGFBfWgzfc3lPNOaYI3_pe8t0/s320/20200501_143730.jpg" width="320" /></a></div>
<br />
I've used a Harmonograph for outreaches and community activities in the
past but the one we use is awkward to transport and had a rather large footprint
(the width is greater than many standard tables – still works
great though). For a long time I’ve wanted to design sleeker version
that is easier to transport but performs just as well, if not better
than our larger, heavier version (it’s a work horse and has worked
for many years and stood up to a great deal of punishment).<br />
My goals for this more portable Harmonograph are as follows:<br />
<ul>
<li>
Made from easily sourced parts (making potential repairs
much easier – nothing exotic in its design)<br />
</li>
<li>
Easily portable – fold up into a flat form (ideally into
a flat box)<br />
</li>
<li>
Magnetic Drawing Platform to easily secure paper (no tape needed)<br />
</li>
<li>
Sturdy – difficult to damage (stands up to eager
children)<br />
</li>
<li>
Safety features<br />
</li>
<li>
Carrying case should be a "Grab and Go" (no need to take additional supplies)<br />
</li>
<li>
Carrying Case will hold:<br />
<ul><ul>
<li>
paper
<br />
</li>
<li>
<strike>colored pencils (lighter weight, less expensive and do not dry
out)</strike><br />
</li>
<li>
<strike>pencil sharpener </strike></li>
<ul>
<li><span style="color: red;">I found that colored pencils needed to much pressure (meaning increased friction and drag and shorter toal swing time). Returning to pens</span><br />
</li>
</ul>
<li>
extra parts and tools (if needed)<br />
</li>
<li>
Simple diagrams for setup (affixed to the inside of the case)<br />
</li>
</ul>
</ul>
</li>
</ul>
My current design utilizes a single piece of 3/4” conduit bent
into the shape of a “U”. The base is made up of 4” x 1”
lumber. This prototype does not fold up but the dimensions are set
up to allow it once all other design features have been met.<br />
The current drawing platform is made up of plywood and sheet metal
(magnetic) and is sized to fit standard 8.5” x 11” paper
including the magnets holding the paper down.<br />
My initial pen/pencil holder was a spring loaded one that held the
drawing instrument vertically above the board. It ended up not working well. The spring load mechanism would get stuck at random times. It's possible that if it was machined on a lathe it may have worked out (though that might make it to delicate). <br />
My next pen/pencil holder design was a simple swing arm holder. In testing it proved too wobbly
and resulted in poor drawing and increased friction (it only drew a few
lines). In a much earlier trial (2 years ago) I used a more precise swing arm design
that worked great but it was much to delicate (good lab design but
not a good practical design).
<br />
I’m now attempting a more engineered design, stabilizing the swing arm with the addition of bearings, etc. My current prototype is not
very elegant but I’m keeping my fingers crossed that this design
will function better than the last one.<br />
Making something new is always an iterative process. As long as
you can learn something new from a design that fails to perform then
you are making progress.<br />
This design is definitely a work in progress but it’s getting
closer every day to meeting my design goals. Once I get it to how I
want it functioning then I’ll have to actually make the box for
transporting it (another adventure in design… that I look forward
to).<br />
What I've discovered so far:<br />
<ul>
<li>need a heavier drawing platform to increase momentum (resulting in longer swing time)</li>
<li>enlarge the drawing platform, possibly making it square to allow different orientation of the paper.</li>
<li>I would like to add a method to adjust the length of the x or y axis pendulum motion to allow other figures to be drawn </li>
</ul>
<style type="text/css">
p { margin-bottom: 0.1in; line-height: 115% }</style>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-40965252919443764752020-04-27T17:47:00.001-05:002020-04-27T17:47:36.902-05:00COVID Isolation Project #2 - Short Shop Stools<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXvqRvJqI1Qw-DepQJgG8yQ-6MA61GKGols1NcgbZALWd5w7E8d3aiG0kcVHG5Fn1kB0zHMTww9w51MPQ36emJ2ybjOdTSSQJnFUR8QSE9oIcXQ7cVFZSowPq4lhnDNnhe7h_yOVglx64/s1600/20200426_180846.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXvqRvJqI1Qw-DepQJgG8yQ-6MA61GKGols1NcgbZALWd5w7E8d3aiG0kcVHG5Fn1kB0zHMTww9w51MPQ36emJ2ybjOdTSSQJnFUR8QSE9oIcXQ7cVFZSowPq4lhnDNnhe7h_yOVglx64/s320/20200426_180846.jpg" width="320" /></a></div>
<br />
Another simple woodworking project using basic tools. I needed a few short stools so that I wouldn't have to kneel on the floor of my garage.<br />
<br />
The stool dimensions are:<br />
Top 12" x 5"<br />
Sides 15" x 5"<br />
I did place a central support in each stool that's 11" x 5"<br />
Everything was glued prior to nailing (I don't have compressed air).<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhW_bNgQSIsFOShr5xEN-hzNiywN9ueltWvFp8wWA2sRAOUDKi1ShnDE13mCk0BJAuJdOJIhkBSIMLm4qE8wgzI7WpvChdfTXDrsuAFe-rChISdi_-VrOcmBW1QAjPaeVYKde1PKRLflUA/s1600/20200421_214939.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhW_bNgQSIsFOShr5xEN-hzNiywN9ueltWvFp8wWA2sRAOUDKi1ShnDE13mCk0BJAuJdOJIhkBSIMLm4qE8wgzI7WpvChdfTXDrsuAFe-rChISdi_-VrOcmBW1QAjPaeVYKde1PKRLflUA/s320/20200421_214939.jpg" width="320" /></a></div>
After gluing, nailing (I did use a punch to drive them below the surface) and sanding I applied 3 coats of Polyurethane (brushed on). <br />
<br />
Supplies:<br />
<ul>
<li>1/2" Baltic Birch Plywood</li>
<li>Wood Glue</li>
<li>Poylurethane</li>
<li>1 1/4" 3D finish nails</li>
</ul>
<br />
Tools:<br />
<ul>
<li>Saw (I used a circular saw with a homemade guide track) but a hand saw would do</li>
<li>Hammer</li>
<li>Clamps (I mainly used corner clamps)</li>
<li>Drill to make guide holes for the nails</li>
</ul>
So far they are very stable and handle a lot of weight. Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-77672669418207062982020-04-27T16:08:00.000-05:002020-04-27T16:08:03.989-05:00COVID Isolation Project #1 - Plane and Chisel Sharpening Jig
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiaknEPfqJISmZHSWpoQyMGgXxL_cHl0hyhDJTe22M7_nGZJGvbECFGy4NnpGv8R0zASlH5S-JOBFn0NqgKpaLwXcRWdPbJxFFXZMD4ryOA1RAElsu7K6tWMz5HovFSGqWOUe4LhX0-z1c/s1600/20200426_123929.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1200" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiaknEPfqJISmZHSWpoQyMGgXxL_cHl0hyhDJTe22M7_nGZJGvbECFGy4NnpGv8R0zASlH5S-JOBFn0NqgKpaLwXcRWdPbJxFFXZMD4ryOA1RAElsu7K6tWMz5HovFSGqWOUe4LhX0-z1c/s320/20200426_123929.jpg" width="240" /></a></div>
<br />
Due to COVID-19
and Social Isolation, to stay busy I’ve been trying to finish up a
slew of projects that have been on my mind and some that I started but haven't finished yet due to other more urgent issues. Some of these are very practical, some are experimental, others are likely a little silly or just for building a certain skill (Learning by making).<br />
<div style="line-height: 115%; margin-bottom: 0.1in;">
My first project, which I completed over the weekend is a jig for sharpening hy hand planes and chisels. It's one piece that holds my wet stone and stops for setting blades in the xxx for standard sharpening angles. The base is Baltic Birch 1/2" plywood. My goal was to keep the setup as compact as possible. I used 1/2" square dowels to surround and hold the wet stone in place, these were clamped and glued in place. After the glue was dry I applied multiple coats of Polyurethane just to minimize water damage to the wood from the wet stone (water resistant but not water proof).</div>
<div style="line-height: 115%; margin-bottom: 0.1in;">
After the multiple coats of Polyurethane were finished drying I screwed down the right angle aluminum extrusion pieces as end stops for the 25 and 30 degree angles for chisel and plane blades.</div>
<div style="line-height: 115%; margin-bottom: 0.1in;">
Supplies</div>
<ul>
<li>1/2” square
dowel</li>
<li>Baltic birch 1/2”
plywood</li>
<li>1/2” right angle
aluminum extrusion</li>
<li>8 x #6 1/2”
screws</li>
<li>Wood Glue</li>
<li>Polyurethane </li>
</ul>
Tools<br />
<ul>
<li>Saw</li>
<li>Screwdriver</li>
<li>Clamps </li>
<li>Ruler</li>
<li>Right angle, 1-2-3 blocks or something else to align the blade stops </li>
</ul>
<div style="line-height: 115%; margin-bottom: 0.1in;">
<br /></div>
<style type="text/css">
p { margin-bottom: 0.1in; line-height: 115% }</style>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-46258615189536869652018-06-17T00:49:00.001-05:002018-06-17T00:49:53.650-05:00Heating element testing<br />
<div style="margin-bottom: 0in; page-break-before: always;">
I decided
that I would finally test a 10cm length of 36 <a href="http://en.wikipedia.org/wiki/American_wire_gauge" target="_blank">AWG</a> nichrome wire
with a current limited supply of varying voltages. Since my windmill generates under 1 Amp of electricity I decided to use an LM317 integrated circuit to fix the current at a max of 220mA. I put an LM317 in a bread board and attached its output to a 10cm length of 36 AWG nichrome wire (from the hair curler heating element). Below is the circuit diagram for my LM317 set to limit current to 220mA:</div>
<div style="margin-bottom: 0in; page-break-before: always;">
<u><b><br /></b></u></div>
<div style="margin-bottom: 0in; page-break-before: always;">
<u><b>Using the LM317 as a current limiter</b></u></div>
<div style="margin-bottom: 0in; page-break-before: always;">
Need to connect the 3 terminal chip as below:</div>
<div style="margin-bottom: 0in; page-break-before: always;">
<b><i> pic</i></b></div>
<div style="margin-bottom: 0in; page-break-before: always;">
<br /></div>
<div style="margin-bottom: 0in; page-break-before: always;">
To calculate the resistance that you need to limit the current to what you want:</div>
<div style="margin-bottom: 0in; page-break-before: always;">
<b><i> formula</i></b></div>
<div style="margin-bottom: 0in;">
<br /></div>
<div style="margin-bottom: 0in;">
In an effort to maximize the
effectiveness of the heating element I decided to test different
thicknesses (or gauges - higher the gauge thinner the wire) of Nichrome wire to see which would work best (produce
the most heat with the power produced by the windmill - just under 2 watts). With this in
mind I ordered 40 and 38 AWG Nichrome wire from <a href="http://www.jacobs-online.biz/nichrome_wire.htm" target="_blank">Jacobs Online</a>
. They mainly sell Nichrome wire for making foam cutters and
igniters for model rockets (the larger scale rockets). They are
fairly inexpensive since you can order lengths as short as 10 feet –
for $6 I got 10 feet of each of the 2 sizes I mentioned before (if I
had wanted 100 feet of each I think it would have only cost me around
$12 – better deal but I just don't want all the excess around).</div>
<div style="margin-bottom: 0in;">
<br /></div>
<div style="margin-bottom: 0in;">
Some basic notes on Nichrome wire:</div>
<ul>
<li><div style="margin-bottom: 0in;">
higher gauge (thinner) = higher
resistance per unit length and heats up at lower power (less
current)</div>
</li>
<li><div style="margin-bottom: 0in;">
coiled wire produces higher temps
than straight wire (with the same voltage and current)</div>
</li>
</ul>
<div style="margin-bottom: 0in;">
More in depth info on nichrome wire take a look at the <a href="http://en.wikipedia.org/wiki/Nichrome_wire" target="_blank">Wikipedia Page for Nichrome Wire</a></div>
<div style="margin-bottom: 0in;">
<br /></div>
<div style="margin-bottom: 0in;">
Resistivity of 1 foot straight Nichrome wire
at room temperature:</div>
<div style="margin-bottom: 0in;">
AWG Ohms</div>
<div style="margin-bottom: 0in;">
40 70.2</div>
<div style="margin-bottom: 0in;">
38 42.2</div>
<div style="margin-bottom: 0in;">
36 27.0 </div>
<div style="margin-bottom: 0in;">
<br /></div>
<div style="margin-bottom: 0in;">
Need some type of temperature resistant
insulation between the wire and the aluminum casing to prevent
shorting out the current to the wire (do not want the wire in direct
contact with the aluminum since it also conducts electricity).
Insulation: Mica sheet, fiber glass fabric (welding supply, car body
work with Bondo)</div>
<div style="margin-bottom: 0in;">
<br /></div>
<div style="margin-bottom: 0in;">
<b><u>Ni-chrome Wire Calculator</u></b></div>
<div style="margin-bottom: 0in;">
<a href="http://www.jacobs-online.biz/nichrome/NichromeCalc.html" target="_blank">Nichrome Wire Calculator</a></div>
<div style="margin-bottom: 0in;">
Gives you some ideas of what you need
even though the lowest temperature on the calculator is 400 degrees
Fahrenheit.</div>
<div style="margin-bottom: 0in;">
</div>
<div style="margin-bottom: 0in;">
<br /></div>
<div style="margin-bottom: 0in;">
If average wind speed is 15mph –
which produces 220mA at about 9volts. That gives us our average
power available. Ohms law states V=IR rearranging we get R=V/I:</div>
<div style="margin-bottom: 0in; margin-left: 0.49in;">
R = 9v/0.220Amps</div>
<div style="margin-bottom: 0in; margin-left: 0.49in;">
R = 40.9 Ohms</div>
<div style="margin-bottom: 0in;">
<br /></div>
<div style="margin-bottom: 0in;">
So, with the windmill running with a
15mph wind producing 9 volts with 220mA (which is just under 2 wattS –
P=9v*0.22A) if we use a length of wire with 40.9 ohms resistance it
should use up all the power. Yes, I know its not perfect reasoning
since resistance increases with increasing temperature in the wire
but I'm just trying to get an idea of what I need before I begin
trying things.</div>
<div style="margin-bottom: 0in;">
<br /></div>
<br />Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-63254744049634289682018-06-17T00:43:00.001-05:002018-06-17T00:43:43.943-05:00Project Neurofeedback: Going a bit further with EEG hacking (Part 3 - smaller unit)<h2 class="western">
Remove the TGAM1 Board</h2>
(This step is optional – I just wanted to remove parts that are
not actually used and free up space. If you do this then you also
need too add a 3.3v regulator circuit to the power supply, same as I
did)
<br />
Separate the TGAM1 Board from the main board in the Mindflex
Headset. This reduces the size significantly – Bluetooth board
will fit with room to spare.<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgtKcHIndMLlfgLlmy_5WXshlhMD7nRKi80LJOB69LZsWPKZVNR2m8TqT8dxsiNhFMlez-Q5NEMwX3QGZa6y6z0jhJKPrHph5vm0PhP5cpE7zA5eOaU7V1ys-JVMBYkDSVpBtJtfRs-foA/s1600/BareTGAM1Bottom.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgtKcHIndMLlfgLlmy_5WXshlhMD7nRKi80LJOB69LZsWPKZVNR2m8TqT8dxsiNhFMlez-Q5NEMwX3QGZa6y6z0jhJKPrHph5vm0PhP5cpE7zA5eOaU7V1ys-JVMBYkDSVpBtJtfRs-foA/s320/BareTGAM1Bottom.JPG" width="320" /></a></div>
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8OYopwbu3eVQRbWMTv4wBj74E0REBSb4MBKKz3sI3LrCogH2WmbUsJCq6k66L8M586E9jmwH4CyYdVuBNhFOuA6v_8QvSBxFOmTTzqkIpsfKFTPN7ni4byDo97okeMIONOgVYNDzRcQ0/s1600/BareTGAM1Top.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8OYopwbu3eVQRbWMTv4wBj74E0REBSb4MBKKz3sI3LrCogH2WmbUsJCq6k66L8M586E9jmwH4CyYdVuBNhFOuA6v_8QvSBxFOmTTzqkIpsfKFTPN7ni4byDo97okeMIONOgVYNDzRcQ0/s320/BareTGAM1Top.JPG" width="320" /></a></div>
<br />
<ul>
<li>Cut headers attaching boards
<br />
</li>
<li>Desolder and remove cut header pins<br />
</li>
<li>Keep connections to (Header P1 connections on data-sheet)<br />
<ul>
<li>Ground (electrode)<br />
</li>
<li>Reference (electrode)<br />
</li>
<li>EEG (electrode)<br />
</li>
</ul>
</li>
</ul>
Adding a 3.3v regulator, with filter caps, to the power supply (3
x 1.5v AAA batteries in series).
<br />
3.3v regulator board (strip board)<br />
<ul>
<li>linear voltage regulator<br />
</li>
<li>filter caps</li>
</ul>
Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-28172484060394822362017-09-07T01:27:00.001-05:002017-09-07T01:27:54.643-05:00SHOW-AND-TELL LIVE VIDEO! 9/6/17 #showandtell @adafruit #adafruit<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/2pLUIo8ivl4" width="480"></iframe>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-54900657114170023562017-05-02T23:02:00.001-05:002017-05-02T23:02:49.797-05:00Project viEwMotion<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjkLwwWBZ0EYWbxEc3uGpCz0n3vVzQgZhDMLb3-FGiX_j0bxfHs3SIoy62OJd5P9fPvqEa7f2fUIQ1N3YgLbaRY2FSWdW6a3yYMdhpWUplxDikaChbWsD_vs8nPE5PykI7I39Ls3yvoRfY/s1600/viEwMotion+++Assembly+2.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="318" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjkLwwWBZ0EYWbxEc3uGpCz0n3vVzQgZhDMLb3-FGiX_j0bxfHs3SIoy62OJd5P9fPvqEa7f2fUIQ1N3YgLbaRY2FSWdW6a3yYMdhpWUplxDikaChbWsD_vs8nPE5PykI7I39Ls3yvoRfY/s320/viEwMotion+++Assembly+2.png" width="320" /></a></div>
<br />
The goal of <a href="https://hackaday.io/project/21505-viewmotion" target="_blank">viEwMotion</a> is to facilitate communication for individuals who have difficulty expressing emotions due to inherent neurologic issues like Autism, Parkinsons, etc (conditions that make it hard express emotion outwardly and as a result for others to read emotion expressed by the effected individual). <a href="https://hackaday.io/project/21505-viewmotion" target="_blank">viEwMotion</a> will do this by interpreting real time physiological data acquired from a wristband which is then processed by a single board computer and displayed to allow others to see the persons emotional state. This will have a profound effect on the ability of people to communicate effectively - changing how they experience and interact with the world around them (in effect changing the world for them and those they interact with).<br />
<a href="https://hackaday.io/project/21505-viewmotion" target="_blank">viEwMotion</a> is a wearable device (worn on the wrist like a watch), that monitors and transmits data to a mini computer which interprets the data and outputs it to a display worn by the individual.<br />Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-17371921367810860872017-04-23T18:05:00.001-05:002017-04-23T18:05:57.141-05:00Voight-Kampff LED Bar-graphs<br />
<br />
<br />
<br />
Working out the LED bar graphs on the Voight-Kampff machine:<br /><iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/tRoTafkjqy8" width="480"></iframe>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-5614639573412897972017-02-05T01:41:00.000-06:002017-02-05T01:41:19.677-06:00Project Voight-Kampff
<div style="margin-bottom: 0in;">
My objective is to build a functional
Voight-Kampff machine from the classic Sci-Fi Movie Blade Runner. </div>
<div style="margin-bottom: 0in;">
Leon's test : </div>
<div class="separator" style="clear: both; text-align: center;">
<iframe width="320" height="266" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/Umc9ezAyJv0/0.jpg" src="https://www.youtube.com/embed/Umc9ezAyJv0?feature=player_embedded" frameborder="0" allowfullscreen></iframe></div>
<div style="margin-bottom: 0in;">
<br /></div>
<div style="margin-bottom: 0in;">
Rachel's test:</div>
<div class="separator" style="clear: both; text-align: center;">
<iframe width="320" height="266" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/ETL3e-X5EHY/0.jpg" src="https://www.youtube.com/embed/ETL3e-X5EHY?feature=player_embedded" frameborder="0" allowfullscreen></iframe></div>
<div style="margin-bottom: 0in;">
</div>
<div style="margin-bottom: 0in;">
<br />
</div>
<div style="margin-bottom: 0in;">
Currently, I'm working on developing
the software, integration of sensors and the actual body of the
machine.</div>
<div style="margin-bottom: 0in;">
<br />
</div>
<div style="margin-bottom: 0in;">
I currently have this project entered
in the <a href="https://hackaday.io/contest/19541-hackadays-2017-sci-fi-contest" target="_blank">Hackaday Sci-Fi Contest</a>
(<a href="https://hackaday.io/project/19643-voight-kampff-machine" target="_blank">Voight-Kampff Project Page</a>) and I plan to exhibit it at the <a href="http://makerfaire.com/chicago/" target="_blank">Chicago 2017 Maker Faire</a>.
</div>
<div style="margin-bottom: 0in;">
<br />
</div>
<div style="margin-bottom: 0in;">
I have much of the mechanics (arm
raise, extension, and rotation of the eye sensor) worked out using
servos and micro-controllers.
</div>
<div style="margin-bottom: 0in;">
<br />
</div>
<div style="margin-bottom: 0in;">
My current design calls for using a
Raspberry Pi as the central processor for the VK. The sensors that
I'm currently working on integrating are:
</div>
<ul>
<li><div style="margin-bottom: 0in;">
Melexis MLX90614 Non-contact
Temperature sensor (for Blush response) </div>
</li>
<li><div style="margin-bottom: 0in;">
Raspberry Pi NoIR Camera Board v2</div>
<ul>
<li><div style="margin-bottom: 0in;">
using software adapted from
<a href="http://www.pygaze.org/" target="_blank">PyGaze</a>
to measure pupil dilation/constriction</div>
</li>
</ul>
</li>
<li><div style="margin-bottom: 0in;">
Separate hand held module for test
subject containing:</div>
<ul>
<li><div style="margin-bottom: 0in;">
MAX30100 pulse ox sensor</div>
</li>
<li><div style="margin-bottom: 0in;">
Galvanic Skin Response Sensor
</div>
</li>
</ul>
</li>
</ul>
<div style="margin-bottom: 0in;">
</div>
<div style="margin-bottom: 0in;">
I aim to have it all contained in the
classic VK machine with read outs from the sensors going to the 3
separate monitors (and the 2 LED Bar Graphs).</div>
<br />
Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-18945655900479680972017-01-24T01:48:00.001-06:002017-01-24T01:48:23.182-06:00Project: A Maker LoupeThis project is also published on <a href="http://hackaday.io/" target="_blank">Hackaday.io</a> as <a href="https://hackaday.io/project/19540-a-maker-loupe" target="_blank">Maker Loupe</a> <br />
Commercial Products that work - but don't meet goals and restrictions:<br />
<ul>
<li>Dental Loupes (<b><i>Links Comming</i></b>)</li>
</ul>
<b>What I've tried so far</b>:<br />
<ul>
<li><div style="margin-bottom: 0in;">
Simple Magnifying Glasses – hand
held and fixed</div>
<ul>
<li>need to be very close to object
being viewed</li>
</ul>
</li>
</ul>
<ul>
<li><div style="margin-bottom: 0in;">
Reading glasses (various
magnifications)</div>
<ul>
<li><div style="margin-bottom: 0in;">
higher the magnification →
closer you need to be to what you are viewing</div>
</li>
</ul>
</li>
<li><div style="margin-bottom: 0in;">
Binocular Microscope
</div>
<ul>
<li><div style="margin-bottom: 0in;">
works quite well but still need
to be bent over the scope</div>
</li>
<li><div style="margin-bottom: 0in;">
a movable stage would improve its
ease of use</div>
</li>
</ul>
</li>
<li><div style="margin-bottom: 0in;">
USB Microsope
</div>
<ul>
<li><div style="margin-bottom: 0in;">
not much experience but they can
have a bit of a delay (what you see can be a fraction of a second
behind what is happening at the moment).</div>
</li>
</ul>
</li>
<li><div style="margin-bottom: 0in;">
Video Scope – NTSC camera,
lenses and composite display
</div>
<ul>
<li><div style="margin-bottom: 0in;">
works reasonably well
</div>
<ul>
<li><div style="margin-bottom: 0in;">
may be able to improve by moving
view screen lower and angling it</div>
</li>
</ul>
</li>
</ul>
</li>
</ul>
<b> Project Goals/Objectives</b>:<br />
<ul>
<li>Comfortably working with small
parts, components, etc. without having to be bend over or bring the
parts close to my face.</li>
</ul>
<ul>
<li>More comfortable – better
ergonomics</li>
<ul>
<li>same as above</li>
<ul>
<li>able to sit upright while working (not bending over)</li>
</ul>
</ul>
<li>inexpensive (under $100 or better
yet, under $50)</li>
<li>hands free / wearable / light weight
</li>
<li><div style="margin-bottom: 0in;">
Magnification (at least 2x)</div>
</li>
<li><div style="margin-bottom: 0in;">
Field of view (at least 3cm)</div>
</li>
<li><div style="margin-bottom: 0in;">
Depth (about 3cm, enough that
working on projects does not lead to neck strain from holding
position).</div>
</li>
</ul>
<b>Project Restrictions:</b><br />
<ul>
<li> Price - affordable for most people</li>
<ul>
<li>ideal is re-purposed parts </li>
</ul>
</ul>
Updates coming soon. Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-58895700925038445682017-01-16T23:43:00.000-06:002017-01-16T23:43:00.514-06:00Update for the Start of 2017Sorry for the long hiatus ... <br />
<br />
Getting to the Finals of the Hackaday Prize and trying to get my project to a functional prototype really burned me out for a little while - I needed a little rest but I'm back now. <br />
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Have a look at the winning entries for the Hackaday Prize 2016 (they are really amazing).<br />
<ul>
<li><a href="https://hackaday.io/prize" target="_blank">Hackaday Prize </a></li>
<li><a href="https://hackaday.io/submissions/prize2016/list" target="_blank">Hackaday Prize 2016 - Submissions</a></li>
<li><a href="https://hackaday.com/2016/11/03/the-final-10-entries-of-the-2016-hackaday-prize/" target="_blank">Final 10 Entries of the 2016 Hackaday Prize</a> </li>
<li><a href="https://hackaday.com/2016/11/29/awarding-the-2016-hackaday-prize/#more-233194" target="_blank">First Place for the 2016 Hackaday Prize</a></li>
<li><a href="https://hackaday.com/2016/11/05/dtto-explorer-modular-robot-wins-2016-hackaday-prize/" target="_blank">Top 5 for the 2016 Hackaday Prize</a></li>
</ul>
I was hoping that I might be able to make it out to the Hackaday Conference (I even submitted a proposal for a talk). Well, I didn't make the cut. But here are links to the amazing talks at the conference: <br />
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Not that I've ever stopped making stuff, just that I took a break from working on my Universal Glucose Meter, etc... and worked on some other areas for a bit.<br />
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Here's some stuff I've been busy with since November 2016:<br />
<ul>
<li>Cheapo SphereBot (from salvaged parts)<div class="separator" style="clear: both; text-align: center;">
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<li>Portable Oscilloscope Build (from kit, mostly) <div class="separator" style="clear: both; text-align: center;">
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<li>Reflow Oven (ControLeo 2, some very minor additions from me)<div class="separator" style="clear: both; text-align: center;">
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<li>2 Watt LED (445nm) Laser for 3D Printer, CNC (kit build, and review)<div class="separator" style="clear: both; text-align: center;">
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<li>Sous Vide Build </li>
</ul>
I'll link each of these to individual project pages with build information ASAP.<br />
<br />Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-68629892971814411572016-11-01T15:05:00.001-05:002016-11-01T15:05:30.192-05:00Chicago Southland Mini Maker Faire 2016<br />
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A basic word of warning to others: Static Electricity Generators are not a great idea in high humidity conditions (relative humidity inside was over 50%). My Van De Graaff generator experienced a mess of problems - from belt problems (thankfully I brought a backup with me), alignment of brushes and (of course) output. The size of my Van De Graaff should make discharges at least a foot long - due to humidity I could only achieve about 1/2 inch.<br />
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This years Faire was great, even with the hot and humid weather (we were all, thankfully, inside).<br />
See Pictures below:<br />
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Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-68713039490627974312016-11-01T00:00:00.000-05:002016-11-01T00:00:07.029-05:00Hackday Prize 2016 Round 4 (Home Automation) Winners<br />
Direct Link: <a href="http://hackaday.com/2016/08/29/hackaday-prize-20-projects-that-are-the-height-of-automation/" target="_blank">Hackaday Prize Home Automation Challange Winners</a><br />
<br />
<ul style="float: left; width: 50%;">
<li><a href="https://hackaday.io/project/11914-relayreprap" target="_blank">RelayRepRap</a></li>
<li><a href="https://hackaday.io/project/12232-headsup-a-low-cost-device-to-diagnose-concussions" target="_blank">HeadsUp, A Low-Cost Device To Diagnose Concussions</a></li>
<li><a href="https://hackaday.io/project/10299-self-replicating-cnc-for-194-or-more-countries" target="_blank">Self Replicating CNC For 194 (Or More) Countries</a></li>
<li><a href="https://hackaday.io/project/11255-3d-printable-portable-slit-lamp" target="_blank">3D Printable Portable Slit Lamp</a></li>
<li><a href="https://hackaday.io/project/12703-alarm-detection-for-hearing-impaired" target="_blank">Alarm Detection For Hearing Impaired</a></li>
<li><a href="https://hackaday.io/project/12874-automated-ledlaser-diode-analysis-and-modeling" target="_blank">Automated LED/Laser Diode Analysis and Modeling</a></li>
<li><a href="https://hackaday.io/project/11802-mycomm" target="_blank">MyComm</a></li>
<li><a href="https://hackaday.io/project/10119-sdramthingzero-133mss-32-bit-logic-analyzer" target="_blank">sdramThingZero – 133MS/s 32-Bit Logic Analyzer</a></li>
<li><a href="https://hackaday.io/project/13091-evive-a-prototyping-platform-for-makers" target="_blank">Evive: A Prototyping Platform For Makers</a></li>
<li><a href="https://hackaday.io/project/11997-mycodo-environmental-regulation-system" target="_blank">Mycodo | Environmental Regulation System</a></li>
</ul>
<ul>
<li><a href="https://hackaday.io/project/12484-the-julius-project" target="_blank">The Julius Project</a></li>
<li><a href="https://hackaday.io/project/12661-theia-iot-light-switch" target="_blank">Theia IoT Light Switch</a></li>
<li><a href="https://hackaday.io/project/10214-coaxcopter" target="_blank">Coaxcopter</a></li>
<li><a href="https://hackaday.io/project/12632-vendotron" target="_blank">Vendotron</a></li>
<li><a href="https://hackaday.io/project/10743-the-distributed-ground-station-network" target="_blank">The Distributed Ground Station Network</a></li>
<li><a href="https://hackaday.io/project/11224-mechaduino" target="_blank">Mechaduino</a></li>
<li><a href="https://hackaday.io/project/11951-affordable-reflectance-transformation-imaging-dome" target="_blank">Affordable Reflectance Transformation Imaging Dome</a></li>
<li><a href="https://hackaday.io/project/11943-open-indirect-ophthalmoscope" target="_blank">Open Indirect Ophthalmoscope</a></li>
<li><a href="https://hackaday.io/project/11047-qubie" target="_blank">Qubie</a></li>
<li><a href="https://hackaday.io/project/11598-open-lidar" target="_blank">Open LIDAR</a></li>
</ul>
Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-22247119189913804162016-10-31T23:58:00.000-05:002016-10-31T23:58:35.641-05:00Hackaday Prize 2016: I'm a Round 5 WinnerHackaday Prize 2016 Assistive Technologies Challange winners: <a href="http://hackaday.com/2016/10/10/these-20-projects-won-1000-for-assistive-technologies/" target="_blank">Article Link to Hackaday.com</a><br />
<br />
Again, my Universal Glucometer project made it to the top 20. Below are links to the project pages of the top 20 winners for the Assistive Technologies Challange:<br />
<br />
<ul style="float: left; width: 50%;">
<li><a href="http://hackaday.io/project/12384" target="_blank">AutoFan – Automated Control of Air Flow</a></li>
<li><a href="http://hackaday.io/project/11719-open-source-arduino-blood-glucose-meter-shield" target="_blank">Open Source Arduino Blood Glucose Meter Shield</a></li>
<li><a href="http://hackaday.io/project/10531" target="_blank">Shakelet – Alerts For The Hard Of Hearing</a></li>
<li><a href="http://hackaday.io/project/12442" target="_blank">A Modular, Low-Cost Braille Electronic Display</a></li>
<li><a href="https://hackaday.io/project/13339-tns-b1i" target="_blank">TNS B1i</a></li>
<li><a href="http://hackaday.io/project/11726" target="_blank">Humidifeyes</a></li>
<li><a href="https://hackaday.io/project/15557-pallette" target="_blank">Pallette</a></li>
<li><a href="http://hackaday.io/project/13284" target="_blank">CastMinder – The Cast And Splint Monitoring System</a></li>
<li><a href="http://hackaday.io/project/13446" target="_blank">Low-Cost Tongue Vision</a></li>
<li><a href="http://hackaday.io/project/13238" target="_blank">FLipMouse</a></li>
</ul>
<ul>
<li><a href="https://hackaday.io/project/15235-aditiaffordable-diagnostic-thermal-incubator" target="_blank">Affordable Diagnostic Thermal Incubator</a></li>
<li><a href="https://hackaday.io/project/10849-refreshable-braille-display" target="_blank">Refreshable Braille Display</a></li>
<li><a href="http://hackaday.io/project/10046" target="_blank">Raimi’s Arm – Bionic Arm For Kids</a></li>
<li><a href="http://hackaday.io/project/13993" target="_blank">BEOWULF</a></li>
<li><a href="http://hackaday.io/project/15507" target="_blank">Facade: Tactile Interfaces To Appliances</a></li>
<li><a href="http://hackaday.io/project/14809" target="_blank">Antigravity Arm Floats</a></li>
<li><a href="http://hackaday.io/project/9890" target="_blank">Dextra</a></li>
<li><a href="http://hackaday.io/project/10865" target="_blank">Universal Glucometer</a></li>
<li><a href="http://hackaday.io/project/11312" target="_blank">3D Prints For Teachers Of The Visually Impaired</a></li>
<li><a href="http://hackaday.io/project/13449" target="_blank">BOSI- BlueTooth Open Source Switch Interface</a></li>
</ul>
Now, its on to the finals. Looks like the top 5 finalists (1st through 5th place) will be announced at the <a href="http://hackaday.com/2016/10/03/everything-youll-find-at-the-superconference/" target="_blank">Hackaday Superconference</a> Nov. 5th and 6th, in Pasadena,CA.Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-32394800838774771392016-10-10T12:19:00.001-05:002016-10-31T23:43:14.396-05:00Universal Glucometer Video<br />
<br />
<br />
<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/jH2MQAuTpCE" width="480"></iframe>Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-83201785550343682752016-07-21T02:28:00.003-05:002016-07-21T02:28:36.642-05:00Chicago Southland Maker Faire - 3rd Annual<h2 style="text-align: center;">
It's just around the corner - <a href="http://southlandmakerfaire.com/about/" target="_blank">The Chicago Southland Maker Faire</a></h2>
<div style="text-align: left;">
</div>
<h3 style="text-align: center;">
<span style="font-size: large;">August 27th 10am-5pm </span></h3>
<h3 style="text-align: center;">
About Chicago Southland Mini Maker Faire:</h3>
<h3 style="text-align: center;">
<span style="font-weight: normal;">2016 marks the third year of the Chicago Southland Mini Maker Faire
(formerly Mokena Mini Maker Faire), held at the Pipefitters Local 597
Training Facility. Organized by <a href="http://mokenatech.com/">SpaceLab</a> and the Mokena Mayor’s <a href="http://mokenatech.com/">Technology Committee</a>,
the Chicago Southland Mini Maker Faire has established Mokena as a
learning community and technology haven in the south suburbs of Chicago.</span></h3>
Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-67723162709878870222016-07-21T02:20:00.000-05:002016-10-31T23:45:58.356-05:00Hackaday Prize 2016 - I'm a Round 3 WinnerI'm so amazed, overjoyed and honored that my <a href="https://hackaday.io/project/10865-universal-glucometer" target="_blank">Universal Glucometer</a> project actually made the <a href="https://hackaday.com/2016/07/18/hackaday-prize-20-projects-that-make-us-all-citizen-scientists/" target="_blank">Top 20 of the 2016 Hackaday Prize - Citizen Scientist Round</a> .<br />
<br />
I've got a lot of work ahead of me - primarily on the coding side, but I'm determined and I WILL get it done, along with a fully functional prototype.<br />
<br />
Here is a list of all 20 Winners of Round 3 Citizen Scientist Round:<br />
<ul style="float: left; width: 50%;">
<li><a href="http://hackaday.io/project/11802-mycomm" target="_blank">MyComm</a></li>
<li><a href="http://hackaday.io/project/11719-open-source-arduino-blood-glucose-meter-shield" target="_blank">Open Source Arduino Blood Glucose Meter Shield</a></li>
<li><a href="http://hackaday.io/project/12499-code-red" target="_blank">CODE RED</a></li>
<li><a href="http://hackaday.io/project/12342-neuroscience-of-grasshopper-jumps" target="_blank">Neuroscience of Grasshopper Jumps</a></li>
<li><a href="http://hackaday.io/project/5059-flypi-cheap-microscopeexperimental-setup" target="_blank">Flypi – Cheap Microscope/Experimental Setup</a></li>
<li><a href="http://hackaday.io/project/12491-spectrophotometer" target="_blank">Spectrophotometer</a></li>
<li><a href="http://hackaday.io/project/11154-alli-gait-or-analysis" target="_blank">Alli-GAIT-or Analysis</a></li>
<li><a href="http://hackaday.io/project/11429-internet-of-things-microscope" target="_blank">Internet Of Things Microscope</a></li>
<li><a href="http://hackaday.io/project/12125-pulse-profiling-underwater-light-sensor" target="_blank">PULSE : Profiling Underwater Light SEnsor</a></li>
<li><a href="http://hackaday.io/project/11951-affordable-reflectance-transformation-imaging-dome" target="_blank">Affordable Reflectance Transformation Imaging Drone</a></li>
</ul>
<ul>
<li><a href="http://hackaday.io/project/10457-sunleaf" target="_blank">SunLeaf</a></li>
<li><a href="http://hackaday.io/project/10865-universal-glucometer" target="_blank">Universal Glucometer</a></li>
<li><a href="http://hackaday.io/project/11407-myflow" target="_blank">my.Flow</a></li>
<li><a href="http://hackaday.io/project/10584-robot-missions" target="_blank">Robot Missions</a></li>
<li><a href="http://hackaday.io/project/12080-cierzscience-tunnel" target="_blank">CierzScience Tunnel</a></li>
<li><a href="http://hackaday.io/project/11943-open-indirect-ophthalmoscope" target="_blank">Open Indirect Ophthalmoscope</a></li>
<li><a href="http://hackaday.io/project/9205-blubeam-a-scanning-laser-microscope" target="_blank">BluBEAM – A Scanning Laser Microscope</a></li>
<li><a href="http://hackaday.io/project/10188-automatic-digital-microscope" target="_blank">Automatic Digital Microscope</a></li>
<li><a href="http://hackaday.io/project/12318-arduino-eeg-and-free-will" target="_blank">Arduino, EEG, and Free Will</a></li>
<li><a href="http://hackaday.io/project/9281-murgen" target="_blank">Murgen</a></li>
</ul>
Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-49376553165537781862016-07-12T22:52:00.000-05:002016-07-13T01:32:02.787-05:002016 Hackaday Prize, moving into round 4So far 3 of the 5 rounds for the <a href="https://hackaday.io/prize/details" target="_blank">Hackaday Prize 2016</a> (this years theme is - "Build Something That Matters") have finished:<br />
<ol>
<li><b>Design Your Concept</b> (March 14 - April 25)</li>
<li><b>Anything Goes</b> (April 25 - May 30)</li>
<li><b>Citizen Scientist</b> (May 30 - July 11) <i>just finished, no results yet</i></li>
</ol>
<div style="text-align: left;">
<i> </i>The top entries for rounds 1 and 2 are listed below:</div>
<h3>
</h3>
<h3>
<a href="http://hackaday.com/2016/05/02/these-20-projects-won-1000-in-the-hackaday-prize/" target="_blank">The top 20 projects of theHackaday Prize 2016 "Design Your Concept" challengeare:</a></h3>
<ul>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/2055-yarrm-7-dof-low-cost-robot-arm" target="_blank">YARRM
– 7-DOF Low-Cost Robot Arm</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10845-tiny-wireless-capsule-camera" target="_blank">Tiny
Wireless Capsule Camera</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/9669-texteye-raspberry-pi-zero-mobile-textreader" target="_blank">Texteye:
Raspberry Pi (Zero) Mobile Textreader</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11000-scotttv-a-simple-mediaplayer-for-my-autistic-son" target="_blank">ScottTV
– A Simple MediaPlayer For My Autistic Son</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10579-retro-futuristic-automobile-control-panel" target="_blank">Retro-futuristic
automobile control panel</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10046-raimis-arm-bionic-arm-for-kids" target="_blank">Raimi’s
Arm – Bionic Arm for Kids</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/9795-nedonand-homebrew-computer" target="_blank">NEDONAND
homebrew computer</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/9461-lifepo4weredpi" target="_blank">LiFePO4wered/Pi</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10707-lasercut-optics-bench" target="_blank">Lasercut
Optics Bench</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10879-internets-of-energy-call-me-daisee" target="_blank">InternetS
of Energy: Call me DAISEE</a>
</div>
</li>
</ul>
<ul>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11323-iceedata" target="_blank">ICeeData</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10302-high-speed-candy-sorting-machine" target="_blank">High
Speed Candy Sorting Machine</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10652-green-powered-sailboat" target="_blank">Green
powered sailboat</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11010-educase-portable-classroom" target="_blank">EduCase
Portable Classroom</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10904-drakkar-printable-robotic-prosthetic-leg" target="_blank">Drakkar
– printable robotic prosthetic leg</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/9890-dextra" target="_blank">Dextra</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10214-coaxcopter" target="_blank">Coaxcopter</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10188-automatic-digital-microscope" target="_blank">Automatic
Digital Microscope</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10391-automated-elephant-detection-system" target="_blank">Automated
Elephant-detection system</a>
</div>
</li>
<li><a href="https://hackaday.io/project/11225-a-new-high-accuracy-tilt-sensor" target="_blank">A
new high accuracy tilt sensor</a><a href="http://hackaday.com/2016/05/02/these-20-projects-won-1000-in-the-hackaday-prize/" target="_blank">
<br />
</a></li>
<a href="http://hackaday.com/2016/05/02/these-20-projects-won-1000-in-the-hackaday-prize/" target="_blank">
</a></ul>
<h3>
<a href="http://hackaday.com/2016/05/02/these-20-projects-won-1000-in-the-hackaday-prize/" target="_blank">The top 20 projects of the 2016 Hackaday Prize "Anything Goes"challenge are:</a></h3>
<ul>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11471" target="_blank">PROJECT
MAN-CAM : Mobile AzEL Networked Camera</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/9281" target="_blank">Murgen</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10188" target="_blank">Automatic
Digital Microscope</a> (also in top 20 of round 1)</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/9657" target="_blank">Classroom
music teaching aid</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11323" target="_blank">ICeeData</a>
(also in top 20 of round 1)</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11224" target="_blank">Mechaduino</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10299" target="_blank">Self
replicating CNC for 194 (or more) countries</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11677" target="_blank">The
Diode Clock</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10743" target="_blank">The
Distributed Ground Station Network</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10670" target="_blank">Open
Source Two-Stroke Diesel Engine</a>
</div>
</li>
</ul>
<ul>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10531" target="_blank">Vibracelet
– alerts for the hard of hearing</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/9976" target="_blank">Dtto
v1.0 Modular Robot</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11167" target="_blank">DIY
Space Grade PCBs</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11074" target="_blank">Box0</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10166" target="_blank">Flying
an EMDrive</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11802" target="_blank">MyComm</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11119" target="_blank">Invisible</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/11056" target="_blank">Waffle:
a pocket-sized digital radio system</a>
</div>
</li>
<li><div style="margin-bottom: 0in;">
<a href="https://hackaday.io/project/10849" target="_blank">Refreshable
Braille Display</a>
</div>
</li>
<li><a href="https://hackaday.io/project/10457" target="_blank">SunLeaf</a>
<br />
</li>
</ul>
<div style="margin-bottom: 0in;">
The <b>Citizen Scientist</b> Challenge (<b><i>Round
3</i></b>) just finished yesterday and that marks the start of the <b>Home
Automation</b> Challenge (<b><i>Round 4</i></b>), to be followed by the <b>Assistive Technologies</b> Challenge (<i><b>Round 5</b></i>) which is the last round before finals.</div>
<div style="margin-bottom: 0in;">
<br /></div>
<div style="margin-bottom: 0in;">
In the next few days we should have news of the to 20 projects in Round 3, that will be added to the list of the top 100 projects going into the Finals.</div>
<div style="margin-bottom: 0in;">
<br /></div>
<div style="margin-bottom: 0in;">
My 2 entries to the Hackay Prize 2016 (<a href="https://hackaday.io/project/10865-universal-glucometer" target="_blank">Universal Glucometer</a> and <a href="https://hackaday.io/project/11146-train-your-brain-with-neurofeedback" target="_blank">Train Your Brain</a>) have not yet made it to the top 20 of any round so far ( ;( ), but I continue to work on them both.</div>
Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0tag:blogger.com,1999:blog-6440410586334596370.post-62113222769334249042016-07-12T22:21:00.000-05:002016-07-12T22:21:10.847-05:00Project: Universal Glucometer - in the news (well... sort of)While trying to show a friend my <a href="https://hackaday.io/project/10865-universal-glucometer" target="_blank">Universal Glucometer </a>entry for the <a href="https://hackaday.io/prize" target="_blank">2016 Hackaday Prize</a>, I came across this article: <a href="http://hackaday.com/2016/06/28/hackaday-prize-entry-a-universal-glucose-meter/" target="_blank">Hackaday Prize Entry: A Universal Glucose Meter</a>.<br />
It was definitely a nice surprise, I must have missed notifications in my feeds.Tom Meehanhttp://www.blogger.com/profile/04225617484471322244noreply@blogger.com0