After some playing with gateway functions and Home Automation Systems, I have realized that I often need to pass some data from one sensor to another. Either periodically every time there is new value or just when there is a condition met. These conditions mostly rather simple, like voltage on battery powered node is reaching low level, or turn on light then there is a person in front of PIR alarm sensor. Having a gateway, I can collect the data. Pass it through Ethernet to MQTT, then to some automation server like NodeRed, process the state and send the result all the way back to another remote sensor or relay. I thought this can be a bit overkill and always require a running computer or at least a Raspberry Pi, so the triggers were born.

Triggers is new section in firmware 1.7.3, it offers as the name suggest, triggering events on sensors or zones. More on blog ...