2 layers89 × 92.5 mm
Kabot
kabot-io/kabot-hardware
Hardware source and production files to recreate Kabot robot in physical world
149 parts
2 layers224 × 98.3 mm
Visorbearer pcb
carrefinho/visorbearer11232-key unibody split wireless keyboard with 8 RGB LED indicators
- Size
- 224 × 98.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 83
- Nets
- 88
- Pads
- 506
- Tracks, vias
- 813, 130
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 16 Mar 2025
- Updated
- 13 Dec 2025
Overview
Visorbearer pcb is an open-source printed circuit board by carrefinho, from the carrefinho/visorbearer repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 224 × 98.3 mm with 83 parts on 88 nets, routed with 813 tracks and 130 vias.
It is built around the LP5012PW and BAV70. Its parts include 24 diodes, 4 capacitors, 4 resistors and 3 ICs. It belongs with the keyboards and input and lEDs and displays boards and the nRF52 and nRF5x boards of this library.
Main components
2
LP5012PW
TSSOP-24-40℃~+85℃ 0V~5.5V 12 2.7V~5.5V 29kHz 35mA 5% I2C Over-Temperature Protection (OTP) TSSOP-24 LED Drivers ROHSTexas InstrumentsLED Drivers
BAV70
SOT-23-55℃~+150℃ 1 Pair Common Cathode 1.25V@150mA 2.5uA@70V 200mA 225mW 2A 6ns 70V SOT-23 Switching Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Switching Diodes
README
README.md
Visorbearer
Visorbearer is a 32-key unibody split wireless keyboard featuring 8 RGB LED indicators.
Named after hummingbirds in the genus Augastes for the Hummingbird layout connection and distinctive white bands on their chests that resemble the LED indicators.
[!WARNING] This is a work in progress.
To-Do
- Build Guide & BOM
- Case Printing Guide
- Alternative layout case files and guide
- Revision 2 PCB testing + power profiling
- Firmware Notes
- Design write-up
- More photos
Design
https://github.com/user-attachments/assets/812049e3-29ce-48d4-8fe3-20bf21285e64
-
2x 4-segment RGB LED indicators
- Discreet dead-front design: completely invisible when off
- Connection bar: Bluetooth profiles and modifier keys
- Battery bar: percentage and charging status
- Powered by two TI LP5012 drivers with automatic low-power mode
-
32-key Hummingbird-ish layout with splay and inverted thumb cluster
- Down to 26-key with case and plate variants
- 2U thumb key support
- Down to 26-key with case and plate variants
-
Hot-swap Kailh Choc v1 switches in Choc (18x17mm) spacing
-
Limited Choc v2 compatibility
The PCB is incompatible with older Choc v2 switches that have a third stabilizing pin. Newer Choc v2 releases without this pin work fine, such as: Lofree POM Phantom/Ghost/Specter/Hades and Kailh Hide Mountain/White Rain/Deep Sea Mini Islet/Deep Sea Mini Whale.
Note that, for Choc v2, there are very few off-the-shelf options for choc-spaced keycaps with MX stems: as of late 2025, the only two are Taihao THCS and Asymplex MX-stem Chicago Steno. You could also 3D-print your own keycaps.
-
-
Seeed Studio XIAO nRF52840 Plus controller on ZMK firmware
-
3D-printed case and switch plate with switch puller grooves
- Easily accessible reset button
Build Guide
[!NOTE] Revision 2 PCB is tested and working. Build guide is work in progress.
Firmware
Gallery
Inspirations & Acknowledgments
- Aesthetics
- Layout
- LED indicator
- GEIGEIGEIST/KLOTZ
- caksoylar/zmk-rgbled-widget: LED code
- Case
- duckyb/urchin: Snap fit design
- And the lovely folks on the Fingerpunch discord who were along for the ride!
License
Visorbearer is licensed under CERN-OHL-P-2.0.
Parts
83| Qty | Value | Footprint | References |
|---|---|---|---|
| 34 | choc | Custom:SW_choc_v1v2_noStab_HS_MBK_1u | CH1, CH2, CH10, CH11, CH12, CH13, CH14, CH15, CH16, CH17, CH18, CH19, CH20, CH21, CH22, CH23 +18 |
| 16 | BAV70 | Package_TO_SOT_SMD:SOT-23_Handsoldering | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 8 | LED_ABGR | led:LED_Cree-PLCC4_2x2mm_CW | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 |
| 8 | MountingHole | visorbearer:MountingHole_2.2mm_M2_ISO7380_Pad_TopBottom_BackSilkRing | H1, H2, H3, H4, H5, H6, H7, H8 |
| 4 | 1u | Capacitor_SMD:C_0603_1608Metric | C1, C4, C5, C7 |
| 2 | 15k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | LOGO | LOGO | G***, G*** |
| 2 | LP5012 | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | U3, U5 |
| 1 | BAT+ | TestPoint:TestPoint_Pad_3.0x3.0mm | TP1 |
| 1 | BAT- | TestPoint:TestPoint_Pad_3.0x3.0mm | TP2 |
| 1 | LPA_EN | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
| 1 | LPB_EN | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | XIAO nRF52840 Plus | PCM_marbastlib-custom:Xiao_nRF52840_Plus | U1 |
Questions
How big is the Visorbearer pcb PCB?
It measures 224 × 98.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Visorbearer pcb use?
83 parts, built around the LP5012PW and BAV70. 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 Visorbearer pcb KiCad files?
From the carrefinho/visorbearer repository on GitHub, at the commit this page was made from: the board is visorbearer-pcb/visorbearer-pcb.kicad_pcb and its schematic visorbearer-pcb/visorbearer-pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Visorbearer pcb 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).
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