Animation: General Purpose Input/Output on the AVR microcontrollers

A short unnarrated Manim animation about the GPIO pins on the AVR microcontrollers. The GPIO pins are controlled by a set of three registers: PINx for input, PORTx for output and pull-up activation and DDRx for the data direction (input or output).
Not included in the video is the possibility to toggle an output bit by writing to the PINx register.