I looking into the possibility to expand my fermentation control. I currently use a RPI 3, arduino(two sensors and two SSR) controlling one chamber. And not to experienced with Brewpi, arduinos and the setup,
What I want is to control two separate chambers: with heat and cooling function, temperature sensor
And a fridge with temperature sensor and cooling. Or do I need multiple arduinos?
Could this be done with one arduino and a 6/8 Chanel relay? And three temperature sensors.