From SB-Components Wiki

Home Automation HAT

Home Automation HAT is a Home monitoring and automation controller HAT for the Raspberry Pi that can control up to 2 appliances/devices on a load of 250 VAC/7A, 30 VDC/10A, photo-coupling isolation Optocoupler EL357NC, allowing users to safely control high voltages or current devices. Home-Automation HAT makes appliances smart, which users can operate via the PiRelay app on their electronic device.


  • Compatible with Raspberry Pi 4, 3B+,3,2,Zero
  • Relay Status Indicator
  • Comes With Development Resources, including examples in Python
  • COM, NO(Normally Open) & NC(Normally Closed) are available for each relay
  • Connectivity of Relay With RPi Without GPIO
  • Connectivity Using Stack Method
  • Onboard Power LED Indicator
  • Make Your Home IoT Enabled
  • Relay Control Pins Selection Jumper


  • Operating Voltage - 220V AC (Via Terminal Block)
  • External Load - 250 VAC/7A, 30 VDC/10A
  • Relay Channels - 2
  • Trigger Signal - 3.3/5V
  • Optocoupler - (CTR: 50~600% at IF= 5mA, VCE = 5V)
  • External Power Supply - Via Terminal Block
  • GPIO - 40 Pins Stacking Header
  • Load Connector - Screw Terminal Block for each Relay(Output)
Home Automation HAT
Buy it From : Click Here


Relays BOARD BCM Wiring Pi
Relay 1 35 GPIO 19 24
Relay 2 33 GPIO 13 23


Raspberry Pi (Using PiRelay App)

PiRelay is an Android app you can use to Switch or Pulse the GPIO Pins of a Raspberry Pi connected to Relays. To use this app you will need to setup your Raspberry Pi and Relays. App Download link: https://play.google.com/store/apps/details?id=com.jasonfindlay.pirelaypro

  • To setup PiRelay on Raspberry Pi, run the below commands one by one. Must complete all commands to make it work with Raspberry Pi.

Commands to Install: WiringPi, Apache, PHP & Download the GPIO PHP File

sudo apt-get update
sudo apt-get install wiringpi apache2 libapache2-mod-php -y
sudo wget https://pirelay.jasonfindlay.com/downloads/gpio.dl
sudo mv gpio.dl /var/www/html/gpio.php

Setting Up Your Android Device


  • Make sure your Pi and Android Device are on the same network. Then in the app settings, you can define a custom Server URL. This is the network path to your Raspberry Pi. The default path is " http://raspberrypi/ ", however, you can define an IP address or a custom URL. To setup communication with your Raspberry Pi, click on ≡ >> Pi URL Addresses, then set Pi 1 : Your Pi IP Address (for eg:
  • To turn on/off relays, Use Pins as Wiring Pi pinout shown above in Pinout table.
  • To setup Relays, Click on ≡ >> Number of Relays, and set it to 2.
  • Now again click on ≡ >> Setup Relays, Now click on any relay and set WiringPi Pin for Relay 1 as 24, and Relay 2 as 23. You can also set Relay default status here.
  • Now move back to the home screen and click on On/Off button to turn on/off relays.