I have an Arduino thermostat controlled via MQTT. I'd like to change my temperature set point higher in the morning and lower in the evening by a set amount. I was thinking of using BigTimer and a function node but I'm not sure how to monitor my set point topic & store it until the BigTimer triggers. Do I use 2 function nodes? One to save my set point changes to the flow context and another to read the flow context and build a payload when BigTimer fires?
Is a better/simpler way to do it?