Thanks for all that Brian

I may need to pick your brains again when I really get into the thick of it! I doubt i'll need a cooler built in as the surrounding temperature will never be above the setpoint.

I'm going to go with your advice on tera term to see how it goes, also is your PID control implemented using hardware or software? I also need to decide on the route to take here, I think coding this could be difficult!

Cheers

Tony...