This page will document all the changes for the second revision of solar sense → changes found from validation and assembly:
- relay footprint is wrong → increase the through hole size, pad size and distance between everything so it actually mates
- have a pin on the controller board get a high or low if connected to the right jumper config for 5 vs 6 mppt board
- none of the vias tented?? maybe manufacturing issue (this was not jlc) but double check pcb
- move C32 north so 12V isnt shorted to ground 😞
- switch mosi and clock and fix miso silk (says mso)
- reconfigure relay driver for low side output for current sinking IC
- indicator LED for 12V
- move the I2C pullup resistors to be near the controller board, not near the first mppt
- Add a fan control IC for solar fan (meant to help cool nomuras inside enclosure) controlled by onboard thermistor and powered off of solar (will be depopped for 6th solar board)