MacroPad

MacroPad

<img src=assets/cad.png alt="Schematic" width="500"/>

MacroPad is an extremely creatively named MacroPad/Numpad with an encoder in place of a num-lock key (which I find useless anyway) that runs QMK firmware.

Features:

• Relatively Simple 3d Printed Case
• EC11 Rotary encoder
• 16 Hotswap Keys
• VIA support!

CAD Model:

Everything fits together using 4 M3x12 Bolts and 4 heatset inserts.

It has 4 printed pieces. The top plate and the bottom housing are printed in standard PLA. There are also two feet on the bottom printed out of TPU.

<img src=assets/blownupcad.png alt="Schematic" width="500"/>

Made using OnShape.

PCB

The PCB was made in KiCad. It is as small as it possibly can be, leaving room for different case designs and mounting options.

Schematic <img src=assets/schematic.png alt="Schematic" width="300"/>

PCB <img src=assets/pcb.png alt="Schematic" width="300"/>

I used Hotswap Sockets, even though they aren't included in the kit, to give myself more options for trying switches.

Firmware Overview

This hackpad uses QMK firmware.

• The rotary encoder changes volume, and you can press it to mute.
• The 16 keys currently act as a MacroPad that I plan to add Via support for.

BOM:

Here should be everything you need to make this hackpad:

• 16x Cherry MX Switches
• 16x Cherry MX Hotswap Sockets
• 13x 1u Keycaps
• 2x 2u Vertical Keycaps
• 1x 2u Horizontal Keycap
• 4x M3x5x4 Heatset inserts
• 4x M3x16mm SHCS Bolts
• 17x SOD-123 Diodes
• 1x EC11 Rotary Encoder
• 1x XIAO RP2040
• 1x Case (3 printed parts)

Extra stuff

This read.me took lots of inspiration and formatting help from the OrpheusPad