This project is a DIY touchscreen panel to arm/disarm Home Assistant’s alarm system. It’s powered by a Raspberry Pi, 3.5″ touchscreen display, a custom Python-based application, and MQTT.
This guide walks you through the creation of the project and provides everything you need to create your own!
Home Assistant is an amazing open-source home automation platform. Among its many features is the ability to implement your own home security alarm system. You can then use various sensors to determine if/when to trigger an alarm.
In my case, I have several Z-Wave door sensors on all of my exterior doors. If any door opens while the alarm is active, I receive instant push notifications on my phone and computers. Eventually I’ll be expanding this to include motion sensors and a siren.
While this works fine, the only way to arm/disarm the device is through the web interface. The manual alarm unfortunately doesn’t have a single API interface we can use to send arm/disarm commands while also receiving instant state changes from HA.
I therefore created the new Manual MQTT Alarm component which functions identically to the manual alarm, but also allows two-way communication over MQTT! With this component we can easily build our own remote keypad using any web-connected platform we can imagine. In my case, I chose to build a solution using a Raspberry Pi with a touchscreen.
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PiTFT Plus 480×320 3.5″ TFT+Touchscreen for Raspberry Pi: Is this not the cutest, little display for the Raspberry Pi? It features a 3.5″ display with 480×320 16-bit color pixels and a resistive touch overlay just like our popular original, but this one is engineered specifically to work with the newer “2×20 connector” Raspberry Pi’s. The plate uses the high speed SPI interface on the Pi and can use the mini display as a console, X window port, displaying images or video etc. Best of all it plugs right in on top! Read more.
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