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Automation HAT

5.0 (1)

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5.0 (1 review)

The Pimoroni Automation HAT is a versatile home automation and monitoring controller for the Raspberry Pi. It provides relays, analogue inputs, buffered digi...

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The Pimoroni Automation HAT is a versatile home automation and monitoring controller for the Raspberry Pi. It provides relays, analogue inputs, buffered digital inputs, and powered outputs — all 24 V tolerant — with indicator LEDs on every channel for at-a-glance status monitoring.

Connects to the Raspberry Pi via the 40-pin GPIO header and is controlled through a Python library with ready-to-use examples.

Key Features

  • 3× 24 V / 2 A Relays – NC and NO terminals for switching loads
  • 3× 12-Bit ADC Channels – 0–24 V input range (±2% accuracy)
  • 1× 12-Bit ADC Channel – 0–3.3 V input range
  • 3× Buffered Inputs – 24 V tolerant digital inputs
  • 3× Sinking Outputs – 24 V tolerant (500 mA total across all three)
  • 15× Channel LEDs – Visual status indicators (analogue channels dim proportionally)
  • 3.5 mm Screw Terminals – Secure, solderless connections
  • Breakout Pins – SPI, TX (#14), RX (#15), #25

Specifications

  • Relays: 3× SPDT, 24 V @ 2 A max (high-side switching)
  • ADC: 3× 0–24 V + 1× 0–3.3 V (12-bit, ±2%)
  • Inputs: 3× 24 V tolerant buffered
  • Outputs: 3× 24 V tolerant sinking (500 mA total)
  • Terminals: 3.5 mm screw
  • Compatibility: Raspberry Pi 3B+, 3, 2, B+, A+, Zero, Zero W

Ideal For

  • Home automation and smart monitoring
  • Greenhouse and irrigation control
  • Industrial sensor monitoring (24 V systems)
  • Relay-based scheduling and switching
Warning: Do not use to switch mains voltages.
Note: Buffered outputs are switched on the ground side (supply → load → output terminal → ground). M2.5 standoffs are recommended to prevent contact with the HDMI port.

Package Contents

  • 1× Automation HAT (fully assembled; breakout pins require soldering)

Resources

Jargon buster

Plain-language definitions for the technical terms used above.

ADC
An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
breakout
A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
GPIO
General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
HDMI
HDMI is a common digital video and audio connection used by computers, media players, and many displays. If a display kit has HDMI input, it is usually much easier to test with a single-board computer because it can act like a normal monitor.
M2.5
A metric screw thread size with a 2.5 mm nominal diameter. It matters for mounting because screws, standoffs, and holes must use the same size to fit securely without damaging the board.
RX
RX means receive, usually showing data being received by the board. An RX indicator LED can help with troubleshooting USB or serial communication.
SPI
A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
TX
TX means transmit, usually showing data being sent from the board. A TX indicator LED can help you see when the board is communicating or uploading code.

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