2 layers246.5 × 83.9 mm
2 layers246.5 × 87.5 mm
Bonk
arko9699/bonk18A 13u row-staggered keyboard using MX switches and STM32
- Size
- 246.5 × 87.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 152
- Nets
- 95
- Pads
- 598
- Tracks, vias
- 557, 47
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Nov 2024
- Updated
- 7 Dec 2025
Overview
Bonk is an open-source printed circuit board by arko9699, from the arko9699/bonk repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 246.5 × 87.5 mm with 152 parts on 95 nets, routed with 557 tracks and 47 vias.
It is built around the USBLC6-2SC6 and 1N4148W. Its parts include 45 diodes, 11 capacitors, 10 switches, 7 resistors and 3 ICs. It belongs with the keyboards and input boards and the STM32 boards of this library.
Main components
2README
pcbs/rev1/readme.mdPCB
Supported Layouts
Opening the project
- Atleast KiCAD 8.0.7 is required to open the project properly. Older versions of KiCAD will not work.
- marbastlib was used for some of the footprints.
Bill of Materials
| LCSC # | Description | Value | Package | Amount | Comments |
|---|---|---|---|---|---|
| C15195 | Capacitor | 10nF | 0402 | 1 | |
| C1525 | Capacitor | 100nF | 0402 | 4 | |
| C15849 | Capacitor | 1uF | 0603 | 3 | |
| C19666 | Capacitor | 4.7uF | 0603 | 2 | |
| C25076 | Resistor | 100Ω | 0402 | 1 | |
| C21190 | Resistor | 1k Ω | 0603 | 1 | Added in rev1.1 |
| C23186 | Resistor | 5.1kΩ | 0603 | 2 | |
| C25804 | Resistor | 10kΩ | 0603 | 1 | Added in rev1.1 |
| C17629 | Resistor | 330kΩ | 0805 | 1 | Added in rev1.1 |
| C17629 | Resistor | 1MΩ | 0805 | 1 | Added in rev1.1 |
| C269104 | Fuse | 500mA | 0805 | 1 | |
| C2988369 | USB-C Port | USB-7010ASV | SMD/THT | 1 | |
| C318884 | Push Button | TS-1187A | SMD | 1 | |
| C5180249 | ESD Prot. | USBLC6-2SC6 | SOT-23-6 | 1 | |
| C81598 | Diode | 1N4148W | SOD-123 | 45 | Additional diode added in rev1.1 |
| C81720 | MCU | STM32F072CBTx | LQFP-48 | 1 | |
| C8545 | MOSFET | 2N7002 | SOT-23 | 1 | Added in rev1.1 |
| C5180249 | Volt. Regu. | XC6206P332MR-G | SOT-23-3 | 1 | |
| C160404 | Opt. JST | SM04B-SRSS-TB | SMD | 1 |
Flashing
The following steps assume you have a PCB and the latest rev1.x firmware downloaded.
Common Steps:
- Plug in the PCB to the computer using an USB cable (either using uDB or directly)
- Hold down button for approximately 10 seconds to enter bootloader.
- Use QMK Toolbox on Windows/Mac. Only CLI method is supported on Linux.
- The PCB should restart automatically after flashing and be ready to use.
- Open vial in a USB HID supported browser (Chrome/Edge/Brave etc.) to modify your keymap.
Parts
152| Qty | Value | Footprint | References |
|---|---|---|---|
| 47 | MX_SW_solder | PCM_marbastlib-mx:SW_MX_1u | MX2, MX10, MX11, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23, MX24, MX25, MX27, MX28 +31 |
| 45 | 1N4148W | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +29 |
| 10 | MX_SW_solder | PCM_marbastlib-mx:SW_MX_1.25u | MX26, MX38, MX39, MX41, MX45, MX50, MX53, MX55, MX58, MX59 |
| 4 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C2, C4, C10 |
| 3 | 1u | Capacitor_SMD:C_0603_1608Metric | C5, C8, C9 |
| 3 | 2.25 | PCM_marbastlib-mx:STAB_MX_2.25u | S1, S2, S6 |
| 2 | 2 | PCM_marbastlib-mx:STAB_MX_2u | S4, S9 |
| 2 | 4.7u | Capacitor_SMD:C_0603_1608Metric | C3, C7 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | MX_SW_solder | PCM_marbastlib-mx:SW_MX_1.5u | MX1, MX12 |
| 2 | MX_SW_solder | PCM_marbastlib-mx:SW_MX_1.75u | MX13, MX36 |
| 1 | 100 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R5 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6 |
| 1 | 10n | Capacitor_SMD:C_0402_1005Metric | C6 |
| 1 | 10u | Capacitor_SMD:C_0603_1608Metric | C11 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 2.75 | PCM_marbastlib-mx:STAB_MX_2.75u | S7 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | 3 | PCM_marbastlib-mx:STAB_MX_3u | S3 |
| 1 | 330k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 500mA | Fuse:Fuse_0805_2012Metric | F1 |
| 1 | 6.25 | PCM_marbastlib-mx:STAB_MX_6.25u | S5 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical | J3 |
| 1 | Conn_01x04 | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J1 |
| 1 | ISO | PCM_marbastlib-mx:STAB_MX_ISO | S8 |
| 1 | MX_SW_solder | PCM_marbastlib-mx:SW_MX_1.75u_STP_1.25 | MX14 |
| 1 | STM32F072CBTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J4 |
| 1 | XC6206PxxxMR | Package_TO_SOT_SMD:SOT-23-3 | U1 |
The 143 most common of 152 parts.
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Questions
How big is the Bonk PCB?
It measures 246.5 × 87.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bonk use?
152 parts, built around the USBLC6-2SC6 and 1N4148W. 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 Bonk KiCad files?
From the arko9699/bonk repository on GitHub, at the commit this page was made from: the board is pcbs/rev2/bonk.kicad_pcb and its schematic pcbs/hotswap-wip/bonk.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bonk design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).