2 layers188.9 × 83.9 mm
2 layers135.8 × 86.3 mm
Shobo right
krikun98/Shobo2Wireless split keyboard built around Framework One Key modules
- Size
- 135.8 × 86.3 mm
- Copper layers
- 2
- Thickness
- 0.8 mm
- Parts
- 52
- Nets
- 116
- Pads
- 337
- Tracks, vias
- 956, 148
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Apr 2026
- Updated
- 15 Apr 2026
Overview
Shobo right is an open-source printed circuit board by krikun98, from the krikun98/Shobo repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 135.8 × 86.3 mm with 52 parts on 116 nets, routed with 956 tracks and 148 vias.
It is built around the TP4054, USBLC6-2SC6 and AO3407, with the BSD3C051V among its other parts. Its parts include 21 switches, 7 resistors, 5 capacitors, 4 diodes and 4 connectors. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
Main components
4
TP4054
SOT-23-5L-40℃~+85℃ 1 25uA 4.2V 4.2V~6.5V 500mA Charging IC Lithium Battery Not supported 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定 SOT-23-5L Battery Management ROHSUMWBattery Management
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
AO3407
SOT-23-55℃~+150℃ 1 P-Channel 1.4W 1V 260pF 30V 37pF 4.1A 75mΩ@4.5V P-Channel ±20V SOT-23 MOSFETs ROHSBORNMOSFETs
BSD3C051V
SOD-32316A@8/20us 1uA 20V 350W@8/20us 5V 60pF 6V Bidirectional IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Single-channel TVS SOD-323 ESD and Surge Protection (TVS/ESD) ROHSBORNESD And Surge Protection (TVS/ESD)
README
README.mdShobo
The Shobo is a wireless ZMK split built to be as thin as possible, based around Framework One Key Modules.
It is licensed under the permissive CERN-OHL-P v2.
Features
- Wireless with a built-in MS88SF3 module
- ZMK support via a module (TBA)
- Fuses and ESD protection
- High Voltage mode for the best power efficiency
- Meant for 301230 100 mAh battery in the PCB hole
- Externally accessible soft_off and reset buttons
- Halves snap together with magnets for ease of transportation
- Should fit within 3.65 mm. of height to be portable in a Framework 16
Download
You can download Gerber files in the releases section once a release is available.
Instructions
Firmware
TBA
BOM/Build instructions
The interactive BOM is available next to the PCB files.
Please refer to the nrfmicro wiki for soldering/verification instructions.
Links
Version 0.1 PCB
| front | back |
|---|---|
 |  |
| front | back |
|---|---|
|  |
V0.1 is currently untested. Gerbers, firmware, cases and etc. will be added once the PCBs are tested.
TODO
- Build/test V0.1 PCBs
- Add FW
- Add 3DP cases/assembly instructions
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | KEYSW | kbd:Framework_One_Key_Module_NORGB | K1, K2, K3, K4, K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K20, K21 +5 |
| 2 | 12pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C4 |
| 2 | 1K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R6 |
| 2 | 4.7uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C5 |
| 2 | 5.1K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2 |
| 2 | HPZ1608U121 | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1, L2 |
| 2 | SW_PUSH | Button_Switch_SMD:SW_SPST_EVQP7C | RSW1, RSW2 |
| 1 | 100K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4 |
| 1 | 10uH | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L3 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5 |
| 1 | 1N5819 | Diode_SMD:D_SOD-323_HandSoldering | D4 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_MicroCrystal_CM9V-T1A-2Pin_1.6x1.0mm_HandSoldering | X1 |
| 1 | 500mA | Fuse:Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1 |
| 1 | AO3407 | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q1 |
| 1 | BLUE | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 1 | BSD3C051V | Diode_SMD:D_SOD-323_HandSoldering | D2 |
| 1 | Battery | kbd:Battery_TH | J4 |
| 1 | MS88SF3_NRF52840 | MS88SF3:MODULE_MS88SF3_NRF52840 | U1 |
| 1 | RED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D3 |
| 1 | SWD | kbd:connector_swd_REV | J1 |
| 1 | TC2030_SWD | PCM_marbastlib-various:CON_TC2030_outlined | J2 |
| 1 | TP4054 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U2 |
| 1 | USB-C Conn | PCM_marbastlib-various:USB_C_Receptacle_HRO_TYPE-C-31-M-14 | J3 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:TSOT-23-6_HandSoldering | U3 |
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Questions
How big is the Shobo right PCB?
It measures 135.8 × 86.3 mm and has 2 copper layers, 0.8 mm thick.
What parts does the Shobo right use?
52 parts, built around the TP4054, USBLC6-2SC6, AO3407 and BSD3C051V. 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 Shobo right KiCad files?
From the krikun98/Shobo repository on GitHub, at the commit this page was made from: the board is pcb/shobo_right.kicad_pcb and its schematic pcb/shobo_left.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Shobo right design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).