USB heater Answered
As sais in the title of the topic, I want to realize a USB heater. Let me introduce you to what I think.
Last week, I was in the store near high school with some friends, and one of them told me : "It would be cool if we could heat up things in high school, to have like a mini oven directly in our locker, working with battery."
Of course, the idea is not to install a oven in our locker, firstly because it would need an incredible battery, and secondly because it would be pretty dangerous....
So here is the idea : the goal is to heat up at least 2 chocolate breads at 60°C. The heating time is not very important, but it has to be under 40 minutes (a system will start the oven before our break). But here is not the most complicated : the oven has to get its power from a usb power bank(I can plug in 2 power banks if necessary).
To conclude, I have to fin a solution to heat approximately 1.5L,( but most of it is filled with air), at 60°C, with a power of a maximum of 20W.
I saw things to heat coffee by USB, would it work if I take the heating pad?
Also, I would like to know how much power I can get from a power bank (in W), before it to heat too much.