MEP EP#207: Beating Dragons with Quarters

<h4><a href="https://macrofab.com/blog/mep-ep207-beating-dragons-with-quarters">MEP EP#207: Beating Dragons with Quarters</a><br></h4><h4>Parker</h4> <ul> <li><strong>PinoTaur Revision 2 </strong> <ul> <li>Passes smoke and programming test</li> <li>Onward to shipping it off to testers and programmers</li> <li>Have a friend that has a couple empty pinball cabinets</li> <li>List for Revision 3 <ul> <li>Change fuse holders to <a href="https://www.mouser.com/ProductDetail/Keystone-Electronics/3588?qs=%2F%252BPMR94VuMZoVX%252BPrVg9MA%3D%3D" target="_blank" rel="noopener">Keystone 3588</a></li> <li>Fix a couple none chamfered traces</li> <li>Update Logos</li> <li>Full backside artwork</li> </ul> </li> </ul> </li> <li><strong>What is next for the PinoTaur project?</strong> <ul> <li>LED Boards using the APA-102C-NEW-260 that I have been testing</li> <li>Wiring Harness Designs</li> <li>Audio Amp for the RPI <ul> <li>PCM5122 + Class D Amp</li> </ul> </li> </ul> </li> </ul> <h4>Stephen</h4> <ul> <li><a href="https://github.com/analogeng/Simulations/blob/master/Sallen%20Key%20Low%20Pass.asc" target="_blank" rel="noopener"><strong>Simulation of the Week</strong></a> <ul> <li>AC analysis</li> <li>2nd order low pass filter</li> <li><a href="https://en.wikipedia.org/wiki/Sallen%E2%80%93Key_topology" target="_blank" rel="noopener">Sallen-Key topology</a></li> <li>Two examples with different cutoffs and Q</li> <li>Next week - Monty Carlo and Gaussian distributions of tolerances</li> </ul> </li> <li><strong>Fermentation Controller</strong> <ul> <li>Resurrecting the walking dead</li> <li>Schematic is getting updated</li> <li>Modifying system design for buttons instead of membrane switches <ul> <li>This is for robustness</li> </ul> </li> <li>Will be milling enclosures <ul> <li>Most of the layout is complete</li> <li>Need to position screen</li> </ul> </li> </ul> </li> </ul>