I am building my own heat exchange ventilator and trying to figure out the best control board options.
The first part is simple. I want to enter custom parameters for fan speed based on a temperature probe's values. I need to be able to customize the temperatures.
The second (and more complex part) is a defrost cycle. Triggered by a temperature reading of 23*F or below, the defrost cycle would run for 10 mins as follows:
Fan 1 off Fan 2 100%
After 10 mins, the program would return to the normal temperature based fan speeds. After 50 mins of this cycle, the temp probe checks again for 23*F or below reading, either triggering or bypassing the second (defrost) cycle depending on reading.
I was planning to use PWM computer fans (4 pin).
What would be the most user friendly controller for someone with very little programming knowledge?
One option I was considering was using a series of 12v timers and small dedicated PC fan temperature controllers (like this)? This would be a very clunky solution, but would avoid getting in too deep with programming.
Thank you very much for the help and let me know where I can clarify further!