4 layers64 × 46 mm
LedDriverBoard V3
RobotPatient/Manikin_Color_Hub
Led driver board files, flexible led strip files and (partially finished) software to drive them. And all our documentation. Part of the skin colour research group.
165 partsMIT
2 layers60 × 165 mm
FabMX keyPad
fabXlabs/fabX_doorKeyPCBOutdoor Keypad and reader PCB
- Size
- 60 × 165 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 115
- Nets
- 91
- Pads
- 448
- Tracks, vias
- 1,239, 175
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 6 Mar 2023
- Updated
- 23 Jan 2026
Overview
FabMX keyPad is an open-source printed circuit board by fabXlabs, from the fabXlabs/fabX_doorKeyPCB repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 2-layer board of 60 × 165 mm with 115 parts on 91 nets, routed with 1,239 tracks and 175 vias.
It is built around the ATSAMD21G18A-MU, AP2112K-3.3 and WS2812B, with the 1N4148W among its other parts. Its parts include 27 diodes, 25 capacitors, 18 resistors, 12 switches and 5 connectors. It belongs with the keyboards and input boards and the SAM D and SAM boards of this library.
Main components
4
ATSAMD21G18A-MU
QFN-48-EP(7x7)-40℃~+85℃ 1.62V~3.6V 10bit 12bit 256KB 32 Bit 32KB 38 48MHz ARM Cortex-M0+ Built-in FLASH QFN-48-EP(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
README
README.mdfabX_doorKeyPCB
Not yet functional
Outdoor Keypad and reader PCB
Parts
115| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 100n | dipolMods:C_0603_min | C4, C5, C6, C7, C10, C11, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25 +1 |
| 13 | WS2812B | ownLEDs:LED_SK6812_EC15_1.5x1.5mm_modRounded | D2, LED10, LED11, LED12, LED20, LED21, LED22, LED30, LED31, LED32, LEDO0, LEDO1, LEDO2 |
| 12 | 1N4148W | Diode_SMD:D_SOD-123 | D10, D11, D12, D20, D21, D22, D30, D31, D32, DO0, DO1, DO2 |
| 12 | SW_Push | PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB | SW10, SW11, SW12, SW20, SW21, SW22, SW30, SW31, SW32, SWO0, SWO1, SWO2 |
| 12 | TestPoint | ownCon:Pad_1.8x5.5mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12 |
| 7 | 0 | dipolMods:R_0603_min | R10, R13, R14, R15, R16, R17, R18 |
| 5 | 1k | dipolMods:R_0603_min | R5, R6, R7, R8, R9 |
| 5 | MountingHole_Pad | MountingHole:MountingHole_2.7mm_M2.5_Pad_Via | H1, H2, H3, H4, H5 |
| 4 | 5k1 | dipolMods:R_0603_min | R3, R4, R11, R12 |
| 3 | 100nF 25V X7R | dipolMods:C_0603_min | C9, C13, C15 |
| 2 | 10uF 10V X7T | dipolMods:C_0603_min | C12, C14 |
| 2 | 22p | dipolMods:C_0603_min | C1, C2 |
| 2 | LED_YELLOW | dipolMods:LED_0603_min | LED_RX1, LED_TX1 |
| 1 | 10k | dipolMods:R_0603_min | R2 |
| 1 | 1u | dipolMods:C_0603_min | C3 |
| 1 | 330 | dipolMods:R_0603_min | R1 |
| 1 | 500mA | Fuse:Fuse_0603_1608Metric | F1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | ATSAMD21G18A-M | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.15x5.15mm | U1 |
| 1 | Conn_01x04 | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical_SMD_Pin1Left | J6 |
| 1 | Conn_01x04 | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J3 |
| 1 | Conn_01x08 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical_SMD_Pin1Left | X1 |
| 1 | Conn_01x12 | Connector_Phoenix_MC:PhoenixContact_MC_1,5_12-G-3.5_1x12_P3.50mm_Horizontal | J7 |
| 1 | Conn_02x03_Odd_Even | pkl_tag_connect:TC2030-NL_SMALL | J2 |
| 1 | Crystal | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | D_Schottky | Diode_SMD:D_SOD-123F | D3 |
| 1 | Ferrite_Bead | dipolMods:L_0603_min | FB1 |
| 1 | Jumper | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | LED_GREEN | dipolMods:LED_0603_min | ON1 |
| 1 | LED_RED | dipolMods:LED_0603_min | LED1 |
| 1 | SPI Flash | Package_SO:SOIC-8W_5.3x5.3mm_P1.27mm | U2 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB_Extra:USB_C_Receptacle_GT-USB-7010 | J1 |
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Questions
How big is the FabMX keyPad PCB?
It measures 60 × 165 mm and has 2 copper layers, 1.6 mm thick.
What parts does the FabMX keyPad use?
115 parts, built around the ATSAMD21G18A-MU, AP2112K-3.3, WS2812B 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 FabMX keyPad KiCad files?
From the fabXlabs/fabX_doorKeyPCB repository on GitHub, at the commit this page was made from: the board is fabMX_keyPad/fabMX_keyPad.kicad_pcb and its schematic fabMX_keyPad/fabMX_keyPad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the FabMX keyPad design in my own project?
Its repository publishes it under the CERN-OHL-S-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).