Automation HAT

The Automation HAT is a versatile home monitoring and automation controller for Raspberry Pi. With relays, analog channels, powered outputs, and buffered inputs — all 24V tolerant — you can connect a wide range of sensors, motors, and actuators to a single board.

Each channel has indicator LEDs so you can see the state of your setup at a glance. The analog channels even have dimming LEDs that reflect the current sensor value. A Python library with examples makes it quick to get started.

Key Features

• 3× 24V @ 2A Relays – NC and NO terminals for switching high-side loads
• 3× 12-bit ADC (0–24V) – ±2% accuracy for analog sensor readings
• 1× 12-bit ADC (0–3.3V) – For lower-voltage analog inputs
• 3× Buffered Inputs – 24V tolerant digital inputs
• 3× Sinking Outputs – 24V tolerant, up to 500 mA total across all three
• 15× Channel Indicator LEDs – Plus power, comms, and warning LEDs
• 3.5 mm Screw Terminals – Secure, tool-friendly connections
• Breakout Pins – SPI, TX (#14), RX (#15), and #25 broken out
• Python Library – Simple API with input, output, and relay examples
• Fully Assembled – Broken-out pins require soldering

Compatibility

• Raspberry Pi 3B+, 3, 2, B+, A+, Zero, and Zero W

Important Notes

• Use brass M2.5 standoffs to prevent pins contacting the HDMI port if the HAT is pushed down
• Buffered outputs switch on the ground side: 12/24V (supply) → load → output terminal → ground (supply)
• Relays should be switched on the high side (up to 2A each)
• Sinking outputs share a 500 mA total budget — a single channel can use the full 500 mA
• Software does not support Raspbian Wheezy

Ideal For

• Smart home and building automation
• Greenhouse monitoring and automated irrigation
• Industrial sensor and relay control
• Aquarium and pet feeding automation

Resources

• Python Library (GitHub)
• Automation HAT Pinout