Thank you very much for the advice so far. I would need a lot of help to rebuild I think. Currently the setup works (except the email thing). It seems like the L298N does have a 12V to 5V converter and I think that's why the Arduino is being powered.
Ok, so if I am to follow the recommendation here, I do have initial basic questions that I'd really appreciate if I can get some guidance. Some context first. I only have 1 sensor (temperature) and only need to create two types of actions, to move linear actuator up and down based on Temperature triggers and to send an email when another temperature trigger. Attached what I've got. I'll get a waterproof DS18B20, but in the meantime, although a bit more innacurate, I'll stick with the Type K thermocouple + Max6775 (will replace in future).
My first questions:
- Do I need a DC-DC "buck" converter if the L298N already has a converter to 5V? Or could I just do it with resistors? I have a lot of them. Found this one in case I need it. Is this what you meant? https://www.ebay.com.au/itm/185040576576
- If the L298N consumes too much power/and it's a bit old. What would be the recommended alternative? I would prefer to work with what I've got it possible, but if I'm using completely the wrong thing, then of course open to do it right.
Thanks so much again!
