PiHAT (Hardware Attached on Top)

[akielaries]

Continue development on the HAT. Should consist of a few components

There are two routes the hardware can take, control most things from the RPi this is connected to or use the STM32 for the heavy lifting. Below assumes the latter

STM32F103 (or STM32G)

• This will ideally control most things
  • Relay -> fan units
  • BME280 (I2C)
  • SHT30 (I2C)
  • BH1750 (I2C?)
  • Avalanche HRNG
• Routinely transmits all collected data from STM32 -> connected RPi via UART

Raspberry Pi 2/3/4

• Collects data from STM32 and publishes using the sysd protocol defined
• Routinely read in avalanche noise for seed for RNG
• etc