2 layers304.8 × 95.2 mm
LMN
FundamentalFrequency/LMN-3-ECAD
Electrical CAD Files for the LMN-3 Project
106 parts106CC-BY-SA-4.0
2 layers282.6 × 138.1 mm
Joy Board
FazalThe/Joy-BoardA custom-built split keyboard with a built in thumb joystick on the left side, runs on zmk firmware and also supports zmk studio.
- Size
- 282.6 × 138.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 132
- Nets
- 107
- Pads
- 590
- Tracks, vias
- 742, 12
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 31 Mar 2026
- Updated
- 1 Sep 2026
Overview
Joy Board is an open-source printed circuit board by FazalThe, from the FazalThe/Joy-Board repository on GitHub. It is a 2-layer board of 282.6 × 138.1 mm with 132 parts on 107 nets, routed with 742 tracks and 12 vias.
It is built around the COM-09032 and LM339. Its parts include 50 diodes, 49 switches, 16 resistors and 3 ICs. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
Main components
2README
README.mdJoy Board
A custom-built split keyboard with a built in thumb joystick on the left side, runs on zmk firmware and also supports zmk studio. The joystick is inteded to use the movements as key presses, but later is when I realised that it's really good for gaming( I don't really game, maybe thats why).
Features
- Split Ergonomic Layout
- Thumb Joystick (Left Side)
- ZMK Studio
Schematic
PCB
Case
BOM
- 2x Pro Micro nRF52840
- 50 x 1N5819 SMD Diodes
- 50 x MX-Style switches (and keycaps)
- 1 x COM-09032
- 2 x JST PH 2pin
- 8 x 10k ohm 0805 resistor
- 4 x 22k ohm 0805 resistor
- 4 x 2.4k ohm 0805 resistor
- 4 x LM339 - SOIC14
- 2 x 100-400 MaH li-po battery
- 4 x 4mm M2 Heatset insert
- 14 x 6mm M2 Heatset insert
- 4 x 6mm M2 Screws
- 14 x 8mm M2 Screws
Credits
- Cherry MX keycap 3D model from GrabCAD.
Parts
132| Qty | Value | Footprint | References |
|---|---|---|---|
| 50 | D | Diode_SMD:D_SOD-123 | D1, D2, D3, D4, D5, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20 +34 |
| 49 | SW_Push | joy:SW_Cherry_MX_1.00u_PCB_3d | SW1, SW2, SW3, SW4, SW5, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20 +33 |
| 4 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4 |
| 4 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10, R12, R13, R15 |
| 4 | 200 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6, R7, R8 |
| 4 | 2k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R11, R14, R16 |
| 4 | LM339 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | O_DOWN1, O_Left1, O_RIGHT1, O_UP1 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H4, H6, H8, H9 |
| 3 | MountingHole | mouse_bit:mouse-bite-5mm-slot | H1, H2, H3 |
| 2 | Conn_01x02_Pin | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | BT1, BT2 |
| 2 | SuperMini nRF52840 | MBL:SuperMini_nRF52840_AH_USBup | U1, U2 |
| 1 | COM-09032 | joy:XDCR_COM-09032 | U3 |
| 1 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.50u_PCB | rSW30 |
Questions
How big is the Joy Board PCB?
It measures 282.6 × 138.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Joy Board use?
132 parts, built around the COM-09032 and LM339. 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 Joy Board KiCad files?
From the FazalThe/Joy-Board repository on GitHub, at the commit this page was made from: the board is PCB/Joy Board.kicad_pcb and its schematic PCB/Joy Board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Joy Board design in my own project?
Its repository states no licence, so its author keeps all rights: ask FazalThe before reusing the design.
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