Thursday, 17 November 2016

Adding 4 relays to your Home Assistant Pi with Arduino UNO

For those that want 4 relays cheaply using a clone of the Seeed studio V2.0 relay board available on AliExpress here, this is how it's configured in HA. Simply follow the Arduino instructions to load the Firmata firmware on your board then plug the Arduino board into your Raspberry Pi.

arduino:
  port: /dev/ttyACM0
 
switch:
  platform: arduino
  pins:
     4:
      name: Relay 4
     5:
      name: Relay 3
     6:
      name: Relay 2
     7:
      name: Relay 1
     13:
      name: Internal LED

The manual for the relay board is here.