I know there is lots different topics regarding this but here I what I would like to do:
Project 1: I want to use a peltier to heat or cool by switching the polarity. This I want to achieve by using a analog circuit with thermistors, lm339 comparators, MOSFET's and and few other inexpensive...
What do you use the first two days if not an airlock? I have loads of foam coming through the airlock and constantly have to top up the airlock with water.
Any suggestions?:confused: