03-07-2016, 08:01
Okay, thanks for that Werk_AG. That helps a lot. I'm still keen to get something sorted though. You mentioned a few posts up that I could use the ADC pin used by the solar sensor to read a 0-5V proportional input. Which one is the ADC pin? Is it A0 or A1? I'm out of my depth here. Could I continue to use my Windows PC to calculate the water tank level and incorporate one of these DAC's https://www.adafruit.com/products/935?gc...fgodr4gAog to feed a 0-5V signal to the ADC pin? The TX unit is in the same room as the PC (the TX unit is on the window sill of a dormer style window and the leads go out through the roof cavity to the sensors on the roof, so connecting the PC and TX unit is quite simple).

