4 layers27 × 27 mm
O32controller
qwertpas/O32controller
Miniature closed-loop controller for brushless DC motors
126 parts37MIT
2 layers139.2 × 126.2 mm
Reversible Bard V1
pvpmoon/Reversible-BardA custom wireless split ergonomic keyboard PCB designed in KiCad, featuring 52 Kailh Choc V1/V2 hot-swap keys, dual XIAO nRF52840 Plus controllers, a rotary encoder, battery connectors, and onboard power switches.
- Size
- 139.2 × 126.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 158
- Nets
- 121
- Pads
- 662
- Tracks, vias
- 1,051, 119
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 Aug 2026
- Updated
- 29 Aug 2026
Overview
Reversible Bard V1 is an open-source printed circuit board by pvpmoon, from the pvpmoon/Reversible-Bard repository on GitHub. It is a 2-layer board of 139.2 × 126.2 mm with 158 parts on 121 nets, routed with 1,051 tracks and 119 vias.
It is built around the MSK12C02, SM02B-SRSS-TB(LF)(SN)(P) and RKJXT1F42001. Its parts include 54 switches, 52 diodes, 2 ICs and 2 connectors. It belongs with the keyboards and input and power boards and the nRF52 and nRF5x boards of this library.
Main components
3README
README.mdReversible Bard V1
A custom wireless split ergonomic keyboard PCB designed in KiCad. The design uses 52 Kailh Choc V1/V2 hot-swap keys, two Seeed Studio XIAO nRF52840 Plus controllers, a rotary encoder, battery connectors, and onboard power switches.
Features
- 52 low-profile Kailh Choc V1/V2 hot-swap keys
- Wireless split design
- Two XIAO nRF52840 Plus controllers
- Rotary encoder support
- Separate battery connector and power switch for each half
- 1.6 mm PCB thickness
Project files
Reversible Bard V1.kicad_pro- KiCad projectReversible Bard V1.kicad_sch- schematicReversible Bard V1.kicad_pcb- PCB layoutReversible Bard V1.step- 3D model
Open the project
Open Reversible Bard V1.kicad_pro in KiCad 9.0 or newer.
Bilder for den ble satt i casen
License
No license has been selected. Add a license before allowing reuse or modification by others.
Parts
158| Qty | Value | Footprint | References |
|---|---|---|---|
| 52 | D | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +36 |
| 52 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2_1.00u | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +36 |
| 44 | , , , , , , , , , , , , , , , +28 | ||
| 2 | MSK12C02 | SamacSys_Parts:MSK12C02 | S1, S2 |
| 2 | SM02B-SRSS-TB_LF__SN_ | SamacSys_Parts:SM02BSRSSTBLFSN | J1, J2 |
| 2 | XIAO-nRF52840-Plus-SMD | XIAO_Series_Footprints:XIAO-nRF52840-Plus-SMD | U1, U2 |
| 1 | RKJXT1F42001 | SamacSys_Parts:RKJXT1F42001 | BB1 |
The 155 most common of 158 parts.
Questions
How big is the Reversible Bard V1 PCB?
It measures 139.2 × 126.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Reversible Bard V1 use?
158 parts, built around the MSK12C02, SM02B-SRSS-TB(LF)(SN)(P) and RKJXT1F42001. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Reversible Bard V1 KiCad files?
From the pvpmoon/Reversible-Bard repository on GitHub, at the commit this page was made from: the board is Reversible Bard V1.kicad_pcb and its schematic Reversible Bard V1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Reversible Bard V1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask pvpmoon before reusing the design.
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