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.

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Using ESPEasy with Home Assistant via MQTT

Preface: I've just started playing around with Home Assistant on a Raspberry Pi and exploring the world of MQTT to control devices on the network. Learning curve is a bit steep but worth the effort as MQTT is very fast. The hardware and software tools I'm using are as follows: 2 x Sonoff relay units 2 x NodeMCU Boards ESPEasy firmware (must be version 121 or above as that contains the MQTT 'retain' flag option. Home Assistant software on Raspberry Pi2 MQTT Test Software: PC: MQTT.fx Android: MQTT Dashboard

My Notepad++ tricks when editing YAML files in Home Assistant

To comment out a whole section in one go: Highlight the text you want to comment out and use CTRL + Q. If you do this at the start of a line, it will only comment that line. CTRL + Q is toggle mode (comment on/off). CTRL + K will allow you to add multiple comments one after the other.

Installing ha-bridge on your Raspberry Pi

EDIT: Updated 14th June 2017 to reflect version 4.5.5. Default port is now 80 to keep Google Home happy and service now supports MQTT! Advice on backups also added 7th Feb. Version 4x also supports adding a Home Assistant instance which is great! Want to control your Vera, Harmony hub or Home Assistant entities with your Amazon echo or Google Home? ha-bridge is the best way to achieve that and installation is actually quite easy and takes less than 5 minutes. Here are the steps.

XBMCNut

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