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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