I made one of these for my scion tc. atmega328 reads the stock buttons and controls a digital potentiometer connected to the wired remote input on the head unit. on mine, the second wire on the ...

If you’ve run out of I/O pins on a project and need a way to add user input you can find a slew of port expanders that work with various communications protocols like I2C and 1-Wire. But if y… ...

YouTube channel How To Mechatronics has created a great tutorial with full instructions on how to create your very own Arduino powered 3D wire bending machine.