ErgoMaxReversible
LouWii·ErgoMax·ErgoMaxReversible/ErgoMaxReversible.kicad_pcb
About the ErgoMaxReversible PCB
ErgoMaxReversible is an open source PCB design by LouWii, published on GitHub under the MIT license. It is a 2-layer board measuring 182.8 × 169.2 mm, with 96 components from 8 distinct parts.
Other key parts include the ProMicro. By type, the board carries 44 relays, 44 diodes, 2 resistors, 1 IC and 1 connector.
It belongs with the keyboards designs in this gallery.
From the project
Custom ergo split keyboard project, based on ErgoDox, with hot swap sockets
As its name suggests, the reversible PCB can be used for either the left side or right side.

Main components on the ErgoMaxReversible
ErgoMaxReversible bill of materials (BOM)
96 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ProMicro | ProMicroReversible | U1 |
| 1 | PJ-320A | TRRS-PJ-320A-dual | J1 |
| 44 | KEYSW | Kailh_socket_MX_reversible | K1, K2, K3, K4, K5, K6, K7, K8 +36 |
| 1 | Logo | LeftSideText | Lg5 |
| 1 | Logo | RightSideText | Lg6 |
| 2 | Stab 2U | Mx_Stab_200 | St1, St2 |
| 44 | D | Diode_Long_Reversible-No3dModel | D1, D2, D3, D4, D5, D6, D7, D8 +36 |
| 2 | 2.2K | Resistor | R1, R2 |
ErgoMaxReversible design files
The KiCad project lives in the LouWii/ErgoMax repository on GitHub; these links point at the commit this page was built from.
ErgoMaxReversible: common questions
How big is the ErgoMaxReversible PCB?
The ErgoMaxReversible measures 182.8 × 169.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ErgoMaxReversible?
96 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the ErgoMaxReversible design files?
From the LouWii/ErgoMax repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the ErgoMaxReversible design in my own project?
Yes, under the terms of its MIT license, which LouWii chose for the repository.
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