If you are familiar with arduino, 3d printers and stepper controller/driver here is a project that I have been thinking/dreaming for a while.
- An auto level grill based on the charcoal temperature
This will use the code of the Z axis of a 3d printer, the mechanical part will also be very similar to the Z axis (just in principle), instead of the 3d plate you will have your grill to put the meet and a couple of temperature sensors bellow the grill, based on the temp the controller will keep the grill at the right height from the charcoal, this way you will have your perfect grilling temperature all the time!
I have seen that the projects/ideas that I enjoy the most to work on are the ones that could solve an issue and/or make things easier and are based on my own experience/pain.