r/lists • Posted by Liam Hayes⚡ Tech

Top Raspberry Pi HATs for Advanced DIY Home Automation

Top Raspberry Pi HATs for Advanced DIY Home AutomationAlright, fellow DIY enthusiasts! If you're serious about taking your smart home beyond off-the-shelf gadgets, a Raspberry Pi is your best friend. But to truly unlock its potential for advanced home automation, you need the right HATs. I've compiled a list of some of my favorite expansion boards that will help you build robust and intelligent systems.
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    Sequent Microsystems Home Automation HAT

    sequentmicrosystems.com
    This HAT is an absolute powerhouse for home automation, packing in eight relays, eight analog inputs, four DAC outputs, four PWM outputs, and even 1-Wire and RS485 communication. It's perfect for integrating a wide array of sensors and controlling various systems like heating or security.
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    Pimoroni Automation HAT

    shop.pimoroni.com
    The Pimoroni Automation HAT is a fantastic all-rounder, offering three 24V tolerant relays, analog inputs, powered outputs, and buffered inputs. It's incredibly versatile for monitoring and controlling devices, from intelligent sprinklers to light switching.
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    ZigStar ZigiHAT

    zig-star.com
    For serious Zigbee integration, the ZigiHAT is a must-have, transforming your Raspberry Pi into a robust Zigbee gateway. It features a powerful CC2652P chip and an external antenna for excellent range and reliability with over 100 devices.
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    Z-Wave.Me RaZberry 7

    z-wave.me
    If Z-Wave is your protocol of choice, the RaZberry 7 turns your Raspberry Pi into a powerful Z-Wave smart home gateway. It's based on the latest Z-Wave 7th generation chip and supports open-source platforms like Home Assistant and OpenHAB.
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    Waveshare Environment Sensor HAT

    waveshare.com
    This HAT provides comprehensive environmental data collection, including temperature, humidity, air pressure, ambient light, VOC, and even motion sensing. It's ideal for building sophisticated climate control or air quality monitoring systems.
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    Sequent Microsystems Eight Relays 4A/120V HAT

    sequentmicrosystems.com
    When you need to control multiple high-power loads, this stackable HAT offers eight 4A/120VAC (or 24VDC) relays with N.O./N.C. contacts and status LEDs. It uses only the I2C port, leaving your GPIOs free for other uses, which is super handy.
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    DFRobot IO Expansion HAT

    dfrobot.com
    This expansion HAT leads out all of the Raspberry Pi's I/O ports, including digital, analog, PWM, I2C, UART, SPI, and IIS, and is compatible with DFRobot's Gravity Series modules. It simplifies connecting a vast array of sensors and actuators without complex wiring.
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    Witty Pi 4 HAT

    adafruit.com
    For advanced power management and scheduled operations, the Witty Pi 4 is invaluable. It includes a real-time clock, allows for scheduled startups/shutdowns, and ensures safe power cycles, which is critical for unattended automation systems.
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    Sequent Microsystems Multi-IO HAT v2.0

    sequentmicrosystems.com
    This industrial-grade HAT is perfect for robust automation, featuring digital inputs, RTD ports, 0-10V and 4-20mA inputs/outputs, relays, servo ports, an H-Bridge, and both RS485 and RS232 communication. It's built for demanding multi-faceted projects.
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    Raspberry Pi Sense HAT

    raspberrypi.com
    While sometimes considered basic, the official Sense HAT's integrated suite of sensors – gyroscope, accelerometer, magnetometer, temperature, humidity, and pressure – combined with its 8x8 LED matrix, is great for feedback in sophisticated local automation displays or reactive systems.
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    Adafruit GPIO Expander Bonnet (PCF8574)

    learn.adafruit.com
    When your advanced projects start demanding more digital I/O pins than your Pi natively offers, the Adafruit GPIO Expander Bonnet provides an additional 16 pins over I2C. This is fantastic for adding many switches, LEDs, or other simple digital components.
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    Sequent Microsystems Sixteen 0-10V Analog Outputs HAT

    sequentmicrosystems.com
    If precise analog control is key for your automation, this stackable HAT offers sixteen 14-bit PWM 0-10V analog outputs. It's ideal for dimming lights, controlling proportional valves, or integrating with industrial control systems.
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    SB Components Relay 4 Zero

    amazon.com
    This 4-channel relay HAT is a straightforward yet effective solution for controlling up to four low/medium current devices. It's compatible with all Raspberry Pi models and includes indicator LEDs for clear status feedback.

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