4x4 Macropad with Rotaries

This is a macro pad with a 4x4 key matrix and 2 rotary encoders that I designed and configured. I configured mine with QMK.


Parts List:

- 16 1N4148 Diodes
- 2 Rotary Encoders
- 16 Key switches - I used KTT Strawberry Linear switches
- Keycaps - choose your own
- Encoder Caps
- Pro Micro - I used a BIT-C pro micro style board
- Copper wire
- Heat shrink tubing


Printing:

I printed them out at 0.3 resolution with PLA, fuzzy skin on the case. It took about 3 hours total for the switch plate and case to print on an Ender 3 V3 SE.

It's friction fit, so feel free to play around with tolerances - it took me a couple tries to get them to fit correctly but the version of 3mf files worked for me.

I wired them up as best I could, using straightened copper wire for column wiring and then straightened copper wire with heat shrink tubing to prevent shorts on the rows.

I used this video for reference on wiring up the matrix, follow it and you'll be good.

The encod