2 layers50 × 35 mm
2 layers79.2 × 20.6 mm
Fingertips
mikeysklar/fingertips4 button I2C keypad
- Size
- 79.2 × 20.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 17
- Nets
- 21
- Pads
- 64
- Tracks, vias
- 98, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 3 Mar 2025
- Updated
- 16 Mar 2025
Overview
Fingertips is an open-source printed circuit board by mikeysklar, from the mikeysklar/fingertips repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 79.2 × 20.6 mm with 17 parts on 21 nets, routed with 98 tracks and 0 vias.
Its parts include 8 resistors, 4 switches, 1 IC and 1 connector. It belongs with the keyboards and input boards of this library.
README
README.mdfingertips
4 button I2C keypad used in combination with:
- 5wayjoy - 5 way tactile joystick I2C STEMMA
- QtHub - 4 way multidirectional hub I2C STEMMA
- old-softie - 3 soft silicon buttons I2C STEMMA
An addition I2C hub and controller is used to run the CircuitPython code needed to translate chords into ascii chars.
Parts
17| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6 |
| 4 | SW_Push | Button_Switch_SMD:SW_SPST_PTS645 | SW1, SW2, SW3, SW4 |
| 3 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1, JP2, JP3 |
| 2 | 0 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R8 |
| 1 | Conn_01x04_Socket | adafruit-connectors:JST_SH4 | J1 |
| 1 | MCP23008-xSS | Package_SO:SSOP-20_5.3x7.2mm_P0.65mm | U1 |
Questions
How big is the Fingertips PCB?
It measures 79.2 × 20.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Fingertips use?
17 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 Fingertips KiCad files?
From the mikeysklar/fingertips repository on GitHub, at the commit this page was made from: the board is fingertips.kicad_pcb and its schematic fingertips.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Fingertips 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).
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