MEP EP#236: Excited Electrons

<h4><a href="https://macrofab.com/blog/mep-ep236-excited-electrons/">MEP EP#236: Excited Electrons</a><br></h4><h4>Parker</h4> <ul> <li>Lead Forming Topic <ul> <li>Tools</li> <li>3D printed forms</li> <li>Best practices?</li> </ul> </li> <li>Cat Feeder Unreminder <ul> <li>Choosing a solar panel <ul> <li>Solar Panels generally act like a current source across its useable power band</li> </ul> </li> <li>Specifications that are important <ul> <li>Power (Watts) - Max </li> <li>Current @ Peak Power </li> <li>Voltage @ maximum power point (Vmpp)</li> <li>Vmpp - Voltage @ open circuit (Voc)</li> </ul> </li> <li>AEM10941 Solar Panel Chip <ul> <li>Max V is 5V so open circuit can’t be higher then this</li> <li>MPP is set by 2 configuration pins</li> <li>Ratio between Vmpp / Voc</li> </ul> </li> </ul> </li> </ul> <h4>Stephen</h4> <ul> <li>Voltage References and dev boards <ul> <li><a href="https://www.mouser.com/ProductDetail/Microchip-Technology/MCP1501T-20E-CHY?qs=8cKuZ6Ok2laZOTxy%252BagHYQ%3D%3D">MCP1501T-20E/CHY</a> <ul> <li>0.1% initial Accuracy</li> <li>Low noise</li> <li>worst case 50ppm across -40 to +125</li> <li>Capable of sinking and sourcing 20mA</li> </ul> </li> <li><a href="https://www.amazon.com/LM-YN-Reference-4-Channel-Precision/dp/B077GN4WZK/ref=sr_1_2?dchild=1&amp;keywords=voltage+reference&amp;qid=1596564623&amp;sr=8-2" target="_blank" rel="noopener">AD584 Dev board</a> <ul> <li>0.3% initial accuracy for the J version. The K version is 0.1%</li> </ul> </li> </ul> </li> <li>Linear rail is shitty <ul> <li>Got 300 mm of knock off chineasium linear rail</li> <li>Sounds like sand in the bearings</li> <li>Held vertically the blocks get stuck…</li> </ul> </li> </ul>