Absolute newbie alert
Am starting on a home automation project and have been looking at advantages / disadvantages of using multiple pi’s for data acquisition and control.
Temperature for heating circuits (radiators) in a home can be varied depending on outside and inside home temparatures to save energy. Lower outside temperatures require higher radiator temperatures inside home and vice versa.
RPi 1 with weather station type sensors
Internal (home) Temperature
RPi 2 Heating system sensors / control
Heating water temperature sensor
Motorized mixing valve that controls temperature to heating circuits / radiators
Heating circuit water temperature sensor / return water temperature sensor
Motorized valves (on off) to isolate 2 areas of house living / sleeping (living area temperature can be decreased during night hours, sleeping areas increased and vice versa during daytime. etc etc
Can the input(sensors) from RPi 1 be used to pass a value to RPi 2 so that the motorized mixing valve can be controlled to adjust the water temperature to radiators to the correct value using Cayenne?
The reason for using multiple RPi’s is that my heating system is in the basement and the cost of using remote sensors, wiring, range extenders etc for an external weather station would equal or even more than adding a RPi dedicated to certain tasks. Above is just a simple scenario. I have two heating circuits and heating sources solar collectors, fireplace boiler, furnace and separate tanks for heating and potable water so the actual project is quite complex requiring quite a few temp sensors and controls, enough to keep one RPi ‘busy’ Not to mention it would be much clearer to have RPi’s dedicated to specific tasks that can work together instead of becoming a very complex jumble…
Would the Cayenne dashboard be able to combine sensors from one or more RPI’s and send those values to other RPi’s?
My question is more about feasibility of using Cayenne for such combined applications rather than technical issues before ‘diving in’.
Thanks for any helpful input or suggestions!