Components for a zmk dongle: a reversible pcb that features mounting holes and wiring for a reset button, and a 3D printed case. The pcb is reversible so that you have the option to mount a reset button to the left or right side of the usb port.

Files:

• gerbers for a promicro compatible reversible pcb
• 3D models for a case
• ergogen code used to generate the pcb

Bill of materials:

• 4 M2 screws (5-6mm length)
• 4 M2 heatset inserts (any length <5mm will work)
• Panasonic EVQ-PU[A|C|J|L]02K (side-operated momentary switch)
• microcontroller with promicro footprint
• sockets for the mcu or headers that came with the mcu

Assembly notes:

• PCB design is intended for the mcu to be mounted face down, such that the RAW pin is in the top left corner.
• Solder the jumper pads on the same side of the pcb that the mcu is mounted to.

This small project was inspired by https://github.com/spe2/zmk_dongle_hardware. I used ergogen to generate the pcb and designed the case in fusion360.