I am quite new in this business and that is why I am trying to ask som help from the experts.
Ok, so the first step, my problem.
I have a totally sealed box. I would like to hold the temperature inside, no matter if the outside temperature is 40°C or -10°C. The box is equipped with a cooling machine, and a separated heating machine. I'd like to controll those two separated machine with a relay board with two separated relay.
The program would work somehow like this.
I would like to adjust the base temperature with a potentiometer. Maybe the limits can be 10 to 30°C. I'd like to let it write on an LCD board.
When I adjust let say 20°C as a base, depending on the actual temperature, the system starts to heat or cool. When it reach the 20°C it stops and starts working when it reach the 22°C ot the 18°C. I think that 2°C limit is enough but I'd like to adjust it in the program depending on the experiance.
My question. Has anybody find some program like this? Can anybody help me how is it possible? what kind of equipments I will need?
Thank you in advance