Delevelop alarm system based on amazing ESP-RFID Github project

[john1]

Actually, this might be exactly what you are looking for:

Controlling House Alarm From HA

Setting up an RFID reader to interface with HA I flashed the ESP8266 (ESP-12) with the following code. Here is what the code does: it waits for a token to be presented. it flashes one beep to acknowledge token and then sends the token serial number to MQTT server published as a topic I have a python script (in the next post) that subscribes to the topic, reads the serial number and if the token is authorized then either turns on or off the alarm and then publishes MQTT messages back to the…