MEP EP#275: Log Stepping Revision Control

<ul> </ul><h4><a href="https://macrofab.com/blog/mep-ep275-log-stepping-revision-control">MEP EP#275: Log Stepping Revision Control</a><strong><br></strong></h4><ul><li><strong>Log stepper</strong> <ul> <li>Exercise in madness</li> <li>24 position stepped attenuator</li> <li>1db steps with step 0 being -infinite and step 24 being 0db attenuation</li> <li><a href="http://caffeineowl.com/electronics/calcs/rescomb/index.html" target="_blank" rel="noopener">Requires lots of non standard resistor values</a></li> <li>Constant total resistance</li> <li><a href="https://macrofab.com/wp-content/uploads/2021/05/Log-Pot.xlsx" target="_blank" rel="noopener">Excel sheet</a></li> <li>Make before break operation</li> </ul> </li> <li><strong>Revision workflow</strong> <ul> <li>How do you document and handle revisions for schematics and pcbs?</li> <li>Process <ul> <li>Get new rev</li> <li>Go to testing</li> <li>Find issues and document</li> <li>Make new revision</li> <li>Repeat </li> </ul> </li> </ul> </li> <li><strong>Venturing into hobby level SLA printing</strong> <ul> <li>Elegoo Mars 2 <ul> <li>Quality is amazing</li> <li>Print speed is interesting</li> <li>Will have to experiment with different resins to find a high strength, high temperature</li> <li>Plating process to test</li> </ul> </li> </ul> </li> <li><strong>Amplifier update</strong> <ul> <li>Live next week on parts replacement?</li> <li>Recovering it</li> </ul> </li> </ul>