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brycekellogg / tide-gauge

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Solar Charging #1

Open brycekellogg opened 3 years ago

brycekellogg commented 3 years ago

Currently, solar charging isn't working. In full sun, the charge LED blinks but does not steadily illuminate. The voltage output of the solar panel is confirmed to be 6.5V, current supply is unknown.

Posts that discuss solar charging for Particle Boron:

https://blog.voltaicsystems.com/solar-charger-for-particle-boron-with-cat-m-1/ https://community.particle.io/t/solved-boron-lte-with-only-vin-without-battery/45058 https://community.particle.io/t/boron-lte-w-solar-trials/46014/4

brycekellogg commented 3 years ago

Two options to try:

  1. setting PMIC to use hardcoded charge values and not negotiate over USB
  2. set solar panel input to Vin instead of USB port
brycekellogg commented 3 years ago

Option 1 doesn't seem to work

brycekellogg commented 3 years ago

Useful hardware for connecting directly to Vin:

https://www.sparkfun.com/products/10811 https://voltaicsystems.com/f3511-5521/