I’ve always been in love with electronics, but just now I’m starting to prototype something other than blinking LEDs on breadboards. Right now I’m trying to build my own 3D printer. I started out with the heated bed circuit and at this point I wanted some feedback from someone more with more experience to know if I’m in the right direction.
I am eager to absolve any knowledge that the community might throw on this topic. The circuit I have so far consists of an N-Channel MOSFET switching power to a heater (the 3D printer heated bed) and reading the temperature through a thermistor. The temp control algorithm will be on the ATMega168A as well as the LCD information rendering. If anyone is interested and wants to contribute, I’m open.
Here is what I have so far: