MEP EP#285: Let The Robots Do It

<ul> </ul><h4><a href="https://macrofab.com/blog/mep-ep285-let-the-robots-do-it/">MEP EP#285: Let The Robots Do It</a><b><br></b></h4><ul><li><b>Finally real engineering… follow up</b> <ul> <li><i>What is the most computational intensive work you have had to do on the job?</i> <ul> <li>Mixed Integer Non Linear Optimization problem <ul> <li>Apopt solver</li> <li>Pyomo</li> </ul> </li> <li>SK -2d polynomial matrix...thing</li> </ul> </li> <li>Email from a listener! <ul> <li>Our “assessment that it is uncommon for engineers to need this is quite biased since both of you work in manufacturing”</li> <li>Clarification of point</li> <li>Most of Stephen's time has been split manufacturing and design</li> <li>Theory classes do reinforce your “gut check” and “rules of thumbs” </li> </ul> </li> </ul> </li> <li><b>Python SCPI Test Development</b> <ul> <li>Recap of Saturday </li> <li>Stephen’s Bias Test Board</li> <li>Issue with devices resetting/losing communication</li> </ul> </li> <li><b>Bias test board</b> <ul> <li>Finding the right A/D kind of sucks <ul> <li>It is never just resolution </li> <li>Lots of variables to juggle <ul> <li>Resolution</li> <li>Speed</li> <li>Cost</li> <li>Accuracy</li> <li>Package</li> <li>Features</li> <li>Not so features</li> <li>PGA</li> <li>Digital filtering</li> </ul> </li> </ul> </li> <li>Caddock 1776-C681 resistive divider <ul> <li>0.05% tolerance</li> <li>Convenient 1/n division</li> <li>0 to 1000V down to 0 to 1V</li> </ul> </li> <li>Settled on ADS1256IDBTG4 <ul> <li>All the bells and whistles</li> </ul> </li> <li>Opamp constant current driver to push 1mA <ul> <li>Resistance range = 100R to 2.2k so 100mV to 2.2V</li> </ul> </li> </ul> </li> <li><b>Joe biden and right to repair</b> <ul> <li>July 9 executive order includes wording for right to repair <ul> <li>To address persistent and recurrent practices that inhibit competition, the Chair of the FTC, in the Chai