Designing the PCB.

I’m creating a schematic for the pcb based on a common calculator layout.

This includes:

• Designing the key matrix (to reduce the amount of pins needed on the microcontroller).
• Creating labels and connecting it to the microcontroller.

I’m using the Arduino Pro Micro as my microcontroller, a 7 segment 8 digit display (MAX7219), and using mechanical keyboard switches.

I haven’t assigned any footprints yet.