Hi all. I am trying to plan a design for a simple cooling system with thermocouple feedback. I am growing larvae in a small terrarium which must be kept below a given temperature for days at a time. My current idea is to use a thermocouple that activates a desktop fan until a minimum temperature is achieved. The larvae will then heat the air again and the temperature increase will activate the fan again as needed. Could you help me brainstorm what equipment and software I will need to make this happen? I really appreciate your help. I will post pic's as the project progresses if anyone is interested in the outcome.