MEP EP#235: Solar Freaking Cat Feeders

Parker

• Cat Feeder Unreminder

  • Pulsing current to light LEDs

    • http://donklipstein.com/ledlocup.html
    • http://www.discovercircuits.com/H-Corner/lowpwrflasher.htm

  • Timer IC

    • LTC2956

  • Power Management

    • Solar with super capacitors

    • Panasonic BSG series solar panels

      • Will have to do research on specifying solar panels

    • AEM10941

      • https://e-peas.com/wp-content/uploads/2020/04/DS_AEM10941.pdf
      • Built in LDO regulators

Stephen

• Ball screws

  • Bought a small section of ball screw with the associated nut, nut housing, and end block
  • SFU1605 300mm - 16mm diameter and 5mm pitch
  • Trying to work out linear forces and the RPM range if it were to be driven from a stepper motor or servo
  • Mechanical engineering is tough

• CNC work

  • Cut the first actual project on the CNC
  • Movable cradle for holding chassis - makes working on them super easy

  • Had to spend some serious time working on getting the machine to cut 90 degree

    • Iterative process
  • Flex in the machine - 0.02” accuracy
  • Going to cut some speaker cabs next
  • Added a simple fan radiator
  • 8020 catalog arrives sometime soon….

• ARP 2600 repair

  • A client found a unit that was put in a closet in 1984
  • It was only pulled out last weekend and is now in my hands to do some repairs