What would be your ideal approach to share global variables across multiple RPi's each with one node-red instance?
Would you take the approach of a MySQL database where you could write / read the variables?
What would be your ideal approach to share global variables across multiple RPi's each with one node-red instance?
Would you take the approach of a MySQL database where you could write / read the variables?
I'd just use MQTT and persistent storage on each Pi
+1 for MQTT.
+2 for MQTT
+3 for MQTT.
If your unfamiliar with MQTT then this guide seems to be a good read;
https://www.hivemq.com/blog/mqtt-essentials-part-1-introducing-mqtt/
thanks i will have a look at the guide and will be using mqtt