MEP EP#236: Excited Electrons

Parker

• Lead Forming Topic

  • Tools
  • 3D printed forms
  • Best practices?

• Cat Feeder Unreminder

  • Choosing a solar panel

    • Solar Panels generally act like a current source across its useable power band

  • Specifications that are important

    • Power (Watts) - Max
    • Current @ Peak Power
    • Voltage @ maximum power point (Vmpp)
    • Vmpp - Voltage @ open circuit (Voc)

  • AEM10941 Solar Panel Chip

    • Max V is 5V so open circuit can’t be higher then this
    • MPP is set by 2 configuration pins
    • Ratio between Vmpp / Voc

Stephen

• Voltage References and dev boards

  • MCP1501T-20E/CHY
    • 0.1% initial Accuracy
    • Low noise
    • worst case 50ppm across -40 to +125
    • Capable of sinking and sourcing 20mA
  • AD584 Dev board
    • 0.3% initial accuracy for the J version. The K version is 0.1%

• Linear rail is shitty

  • Got 300 mm of knock off chineasium linear rail
  • Sounds like sand in the bearings
  • Held vertically the blocks get stuck…