View this project on CADLAB.io.
RPI Hat for reef-pi
Supports
- Back powering the rpi with 5v
- 9 channels of PWM control via PCA9685 (split between 3 connectors)
- 3 channels for 1 wire communication (up to 3 DS18B20 temperature probes)
- 2 i2c ports for ph probe modules
- 2 ATO sensors
- 8 channel 12v relay control via ULN2803
- 8 GPIO breakout (intended for 3.3v relay module)
