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Communicate "wired" home security sensors to HA using MQTT autodiscovery.

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Guarduino

Guardino is an Arduino (Mega) Sketch which provides a low-cost, high reliability, "wired" home security hardware interface which reports into HomeAssistant using MQTT autodiscovery.
drawing

Guarduino Features

  • Monitors wired reed switches via BOTH "NO" and "NC" pins, thus enabling reliable detection of "Open", "Closed", "Unknown" and "No Power".
  • Monitors wired (PIR/microwave) motion detectors via BOTH "data" pin AND "power sense" pins, thus enabling reliable detection of "motion", "quiet", "unknown" and "no power."
  • Supports HomeAssistant MQTT "Auto Discovery". NO "configuration.yaml" changes are needed.
  • Supports monitoring multiple (20 or more?) concurrent, "two pin" sensors.
  • Supports two-way toggle and read of HomeAssistant "Switches" via MQTT.
  • Supports reading zero to many wired, DS18x temperature sensors.
  • Presents dynamic icons based on sensor type and current sensor state.
  • Runs on (affordable) Arduino Mega hardware.

Quick Start (HomeAssistant Users)

  1. Install the "Mosquitto Broker" Add-On into your HomeAssistant instance.
  2. Install the "MQTT" Integration into your HomeAssistant instance.
  3. Edit guarduino.ino
  4. Set your Mosquitto IP address (MQTT_ADDRESS) in guarduino.ino
  5. Set your Mosquitto Password (MQTT_PASSWORD) in guarduino.ino
  6. Install Arduino dependency libraries listed on top of guarduino.ino
  7. Compile, then upload into your Arduino Mega.
  8. Boot your Guarduino (Serial Baud rate 19200)
  9. HomeAssistant | Settings | Devices & Services | MQTT
  10. Wait for your Guarduino to show up.

More Information

Visit the Guarduino Wiki

Guarduino History

Guarduino was born after I was victim of a break-in into my garage where, every hand tool I owned was stolen. Determined to prevent this again, I wanted to monitor entry points into the garage (and house) using devices which I could RELY on, and which did not cost a fortune. I found that most existing projects either supported "one pin" reed switches, and/or, were not capable of supporting numerous devices on an Arduino, typically due to memory constraints.

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