MEP EP#235: Solar Freaking Cat Feeders

<h4><a href="https://macrofab.com/blog/mep-ep235-solar-freaking-cat-feeders">MEP EP#235: Solar Freaking Cat Feeders</a><br></h4><h4>Parker</h4> <ul> <li>Cat Feeder Unreminder <ul> <li>Pulsing current to light LEDs <ul> <li><a href="http://donklipstein.com/ledlocup.html">http://donklipstein.com/ledlocup.html</a></li> <li><a href="http://www.discovercircuits.com/H-Corner/lowpwrflasher.htm">http://www.discovercircuits.com/H-Corner/lowpwrflasher.htm</a></li> </ul> </li> <li>Timer IC <ul> <li><a href="https://www.analog.com/en/products/ltc2956.html" target="_blank" rel="noopener">LTC2956</a></li> </ul> </li> <li>Power Management <ul> <li>Solar with super capacitors</li> <li>Panasonic BSG series solar panels <ul> <li>Will have to do research on specifying solar panels</li> </ul> </li> <li>AEM10941 <ul> <li><a href="https://e-peas.com/wp-content/uploads/2020/04/DS_AEM10941.pdf">https://e-peas.com/wp-content/uploads/2020/04/DS_AEM10941.pdf</a></li> <li>Built in LDO regulators</li> </ul> </li> </ul> </li> </ul> </li> </ul> <h4>Stephen</h4> <ul> <li>Ball screws <ul> <li>Bought a small section of ball screw with the associated nut, nut housing, and end block</li> <li>SFU1605 300mm - 16mm diameter and 5mm pitch</li> <li>Trying to work out linear forces and the RPM range if it were to be driven from a stepper motor or servo</li> <li>Mechanical engineering is tough</li> </ul> </li> <li>CNC work <ul> <li>Cut the first actual project on the CNC</li> <li>Movable cradle for holding chassis - makes working on them super easy</li> <li>Had to spend some serious time working on getting the machine to cut 90 degree <ul> <li>Iterative process</li> </ul> </li> <li>Flex in the machine - 0.02” accuracy</li> <li>Going to cut some speaker cabs next</li> <li>Added a simple fan radiator</li> <li>8020 catalog arrives sometime soon….</li> </ul> </li> <li>ARP 2600 repair <ul> <li>A client found a unit that was put in a closet in 1984</li>