A (mostly un-cohosted) podcast where we talk about progress - or lack thereof - of hobby-projects, mostly related to software, electronics or mechanical engineering.
CBA Podcast
Claim This Podcastby Michai Ramakers
46 episodes
Updated Daily
Accepts GuestsHas SponsorsLocation 🇳🇱
Podcast Overview
A (mostly un-cohosted) podcast where we talk about progress - or lack thereof - of hobby-projects, mostly related to software, electronics or mechanical engineering.
Language
🇺🇲
Publishing Since
10/16/2017
1 verified contact email on file for CBA Podcast
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Recent Episodes
April 12, 2022
episode 45: glucometer, fuel consumption and vacuum cleaner
<p>(Michai is too lazy to make shownotes now, check again later. :-)</p>
January 17, 2021
episode 44: DMX512, ground reference and LED decoration stuff
<p>Hi, and an extremely good 2021 to all of you.</p> <p>We start off this brand new year talking about some totally unrelated and slightly more related <strong>new year's resolutions</strong>,<br /> a miniscule <strong>car fix</strong>, and <strong>glueing with a 3D printing pen</strong>. All in not much more detail than stated here.</p> <p>Continuing on last episode's VGA generator board, I added a <strong>DMX512 interface</strong> as suggested by some people - thank you for<br /> the idea. I found <strong>Q Light Controller Plus (qlcplus)</strong> a nice and so far solid piece of software for controlling DMX devices<br /> from a laptop + USB/RS485 converter cable.</p> <p>A potential issue (or at least in my head) when making interlinked devices like these, is potentially <strong>different ground-potentials</strong><br /> depending on which power outlets you use to power networked your device. (See what I did there?) We talk a bit about how to guesstimate<br /> the possible magnitude of this difference.</p> <p>Just for fun I made an xmas <strong>LED star-shaped decoration</strong> using an existing DIY LED driver board. Reuse everything, recycle success.<br /> Also, made a modular <strong>transparant acrylic home LED decoration</strong>: shine light into the edge of an engraved piece of acrylic. Of course<br /> there was failure, this time in the form of <strong>hygroscopic LEDs</strong> + laziness + oven = damage.</p> <p>Finally, I made a small <strong>power switch PCB</strong>, to be placed in between USB power source and USB device: automatically switch the device off<br /> when the environment goes dark.</p> <p>And remember: if YOU want to make this podcast suck less, please send <strong>comments</strong>, <strong>rants</strong>, <strong>complaints</strong>, <strong>threats</strong> and/or <strong>praise</strong>. :-)</p> <p> </p> <p>Relevant links:</p> <ul> <li>Generic info on <a title= "stray garbage and some cleanup initiatives" href= "https://en.wikipedia.org/wiki/Litter">stray garbage and some cleanup initiatives</a> (or <a title="Dutch version" href= "https://nl.wikipedia.org/wiki/Zwerfafval">Dutch version</a>).</li> <li><a title="Q Light Controller Plus" href= "https://www.qlcplus.org/">Q Light Controller Plus</a> : software for controlling DMX512 devices.</li> <li>The USB-to-RS485 cable I happen to use: <a title="USB-RS485-WE" href= "https://ftdichip.com/products/usb-rs485-we-1800-bt/">USB-RS485-WE</a>.</li> <li><a title="Video of DMX VGA generator in action" href= "https://youtu.be/omvmH2A_sPs">Video of DMX512 VGA generator in action</a></li> <li><a title="Tweet" href= "https://twitter.com/MichaiRamakers/status/1338180731667963906">Tweet</a> (*sigh*...) of star-shaped LED xmas decoration.</li> <li><a title="Another tweet" href= "https://twitter.com/MichaiRamakers/status/1348358540965146627">Another tweet</a> (*groan*...) of engraved acrylic LED decoration. </li> </ul> <p> </p> <p>Pics of things talked about:</p> <p> </p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba044_dmx_pcb.jpeg" alt="DMX512 VGA generator boards." width="1261" height="726" /></p> <p>DMX512 VGA generator boards.</p> <p> </p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba044_acrylic_pcb_powered.jpeg" alt="Engraved acrylic LED decoration PCB in action" width="1274" height="717" /></p> <p>Engraved acrylic LED decoration PCB in action.</p> <p> </p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba044_acrylic_base_open.jpeg" alt="...in its base, open..." width="1257" height="707" /></p> <p>...in its base, open...</p> <p> </p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba044_acrylic_base_closed.jpeg" alt="...and closed up." width="1268" height="713" /></p> <p>...and closed up.</p> <p> </p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba044_ldr_board.jpeg" alt="LDR USB power switch board..." width="1251" height= "704" /></p> <p>LDR USB power switch board...</p> <p> </p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba044_ldr_schem.jpg" alt="...and schematic." width="1451" height="888" /></p> <p>...and schematic.</p>
November 1, 2020
episode 43: DMM probes, laundry fix and light-hangout
<p>Welcome to a pretty boring episode - just as you're used to by now!</p> <p>Prepare yourself for epic or less epic talk about a <strong>mains test jig</strong> that proved very useful, some awesome <strong>Probe Master DMM probes</strong> well worth the money, and both me and occasional cohost Domen <strong>fixing household stuff</strong>, and the subtle psychology of starting a repair.</p> <p>Homebrew-wise, the only thing I made was a smooth <strong>green LED under-plant decoration</strong>. For fun, I visited an informal light-art hangout and talked about adding <strong>DMX512</strong> to my VGA generator board. </p> <p>Relevant links:</p> <ul> <li>a potato quality animated GIF of the <a title= "green plant-decoration LED thing" href= "https://twitter.com/i/status/1296447790822940677">green plant-decoration LED thing</a> (on Twitter)</li> <li>the <a title="Probe Master DMM probes" href= "https://probemaster.com/spring-loaded-micro-tip-test-leads-only/">Probe Master DMM probes</a> that I got - they are excellent</li> <li>Wikipedia's entry on <a title="DMX512" href= "https://en.wikipedia.org/wiki/DMX512">DMX512</a> stage-gear control network</li> </ul> <p>Pics of things discussed:</p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba043_jig.jpeg" alt= "testjig" width="1024" height="629" /></p> <p>The test-jig from <a title="episode 41" href= "https://cbapodcast.libsyn.com/episode-41-oversized-test-jig-spiky-led-ball-and-knowing-your-equipment"> episode 41.</a></p> <p> </p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba043_strip.jpeg" alt="strip" width="845" height="531" /></p> <p>Clumsily made LED strip using paper, glue and cursewords...</p> <p> </p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba043_driver.jpeg" alt="driver" width="1139" height="765" /></p> <p>...and a simple PWM/MOSFET driver to control 3 such strips.</p> <p> </p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba043_shelf.jpeg" alt="plant" width="1280" height="765" /></p> <p>Let there be Light, and let there be a Plant!</p> <p> </p> <p><img src= "https://assets.libsyn.com/secure/show/108366/cba043_domenfix.jpeg" alt="domenfix" width="1024" height="546" /></p> <p>Domen's epic Fireplace Fix: worn out film cap.</p> <p> </p>
46 total episodes available
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