Short of adding non-volatile memory to your setup, you can abuse MQTT’s persistence ... we need to add a new configuration file on our home Pi-based MQTT server. In this example, I’m calling ...

If you read Hackaday, it is a good bet you’ve heard of MQTT — Message Queueing Telemetry Transport. If you’ve not used MQTT before, you should check out Ably’s [Kayla Matthews’] post ...