corygrant/dingoPDM

Change power LED

corygrant opened this issue · 1 comments

corygrant commented

Having the power LED on all the time uses extra power when the MCU enters sleep mode.
If the device is used without a battery disconnect this is not ideal.
There are a few options:

  • Not easily changed:
    • Add a solder bridge
      • An open one that must be soldered to get the LED
      • Or a closed one that must be cut to disable the LED
    • Add a 0 ohm resistor
    • Desolder the LED or resistor
  • Easy to change:
    • Slide switch (like boot switch, requires extra parts)
    • Pin jumper (thru hole and extra parts)
    • Go to a MCU output (uses up a pin)
      • Would also not represent power correctly

This is something that is dependent on the installation, so I don't think it needs to be easy to change.
A solder bridge is probably the best approach, either an open or closed one.