2 layers116.8 × 30 mm
Type d
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
14 parts3kApache-2.0
2 layers86.3 × 86.8 mm
Mastermind
nicopaulb/mastermindElectronic version of the Mastermind board game
- Size
- 86.3 × 86.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 14
- Nets
- 32
- Pads
- 81
- Tracks, vias
- 131, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Sep 2025
- Updated
- 8 Dec 2025
Overview
Mastermind is an open-source printed circuit board by nicopaulb, from the nicopaulb/mastermind repository on GitHub. It is a 2-layer board of 86.3 × 86.8 mm with 14 parts on 32 nets, routed with 131 tracks and 0 vias.
Its parts include 7 switches, 3 diodes, 1 IC and 1 connector. It belongs with the nRF52 and nRF5x boards of this library.
README
pcb/README.mdKiCad PCB files
For Kicad 9
Parts
14| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | SW_Push | mastermind:SW_PUSH-12mm | SW1, SW2, SW3, SW4, SW5, SW6 |
| 2 | ~ | mastermind:LED Strip 2 LED | LED2, LED3 |
| 1 | Battery connector | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J1 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | SW_RST | mastermind:SW_PUSH-12mm | SW7 |
| 1 | SuperMini nRF52840 | mastermind:SuperMini NRF52840 | U1 |
| 1 | ~ | mastermind:LED Strip 4 LED | LED1 |
| 1 | ~ | mastermind:7seg | 7SEG1 |
Questions
How big is the Mastermind PCB?
It measures 86.3 × 86.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mastermind use?
14 parts. 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 Mastermind KiCad files?
From the nicopaulb/mastermind repository on GitHub, at the commit this page was made from: the board is pcb/mastermind.kicad_pcb and its schematic pcb/mastermind.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mastermind design in my own project?
Its repository states no licence, so its author keeps all rights: ask nicopaulb before reusing the design.
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