I want to do an small project. I already have a thermocouple reading app and circuit ( everything works fine ), now i want to control a resistance heater with the thermocouple reading as input. After some T, the heater will be shot down. My first approach after a little bit of research is a transistor ( it is basic, but i do not want anything too complicate or expensive ). I do not want to measure temperature over 100 celsius degrees so it will work?, the transistor will be fine?.
Here is the idea:
Thermocouple reading -> Arduino->( after reach some Temperature from Analog 0, send signal to Output 0)->transistor receives signal->communication between current and heater resistance is off