Helix Hotswap PCB Kit

Helix Hotswap PCB Kit

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The Helix keyboard is a split ortholinear design that features a 5x6 grid with two additional thumb keys on the bottom two rows. The PCBs feature per key RGB lighting as well as footprints for optional OLED screens. By default, the screens display the current layer and information about recently pressed keys. The PCBs allow for hotswapping of keyboard switches via Kailh MX Hotswap Sockets. These sockets are compatible with Cherry MX style switches.

The Helix keyboard was originally designed by pluis9 with artwork by void_keys and was remixed by mcmadhatter in order to add hotswap functionality. Additional information about the Helix keyboard along with the source files from the designer can be found on the Helix Hotswap Github repository. QMK key mappings and firmware can be found here.

PCB Variants


Switches must be soldered in to place. Compatible with Cherry MX and Kailh Low Profile Choc switches. Supports 4 or 5 row layouts. PCBs can be purchased here.

Helix Hotswap

PCBs utilize Kailh MX Hotswap Sockets that can only be used with Cherry MX compatible switches. 5 row layout is supported.

This particular Helix PCB variant includes footprints for Kailh MX Hotswap Sockets and must be used with Cherry MX compatible switches.


Kit - Kits must be assembled in order to be used. The following components are included with each kit.

2 TRRS Jack
2 Reset Switches

Through Hole Diodes (SMD available upon request)


Kailh MX Hotswap Sockets


Assembled - These PCBs are assembled by hand and come with all components soldered onto the PCB. The TRRS Jacks, Reset Switches, and Diodes (surface mount or through hole) are tested prior to shipping to verify functionality.

In addition to the components included with the kit, the assembled PCBs also come with Mill Max Ultra Low Profile sockets for the Pro Micros (or equivalent) as well as sockets for the OLED screens. This is done to allow for testing to verify functionality after the PCB is assembled.

Pro Micros and OLED screens are not included and will need to be purchased separately. Pro Micros and OLED screens will need to be socketed in order to be used with the assembled PCBs. 

Pro Micros can be purchased here and here. Compatible OLED screens can be found here. An informative guide for socketing Pro Micros can be found here. The same steps can be used for socketing OLED screens.

Additional Notes

The following components are optional.

 2 OLED Screen Link
50/64 RGB LED (Included with Assembled PCBs) Link

The following components are required in order to have a completed keyboard.

2 Pro Micro or equivalent
1 Helix Keyboard Case
64 Cherry MX
64 Keycaps
1 TRRS Cable
1 USB Cable