2 layers192.4 × 50 mm
2 layers99.1 × 59.7 mm
Keypad 47
soupie-62/Keypad3Pmod compatible I2C keyboard
- Size
- 99.1 × 59.7 mm
- Copper layers
- 2
- Thickness
- 2.03 mm
- Parts
- 109
- Nets
- 73
- Pads
- 344
- Tracks, vias
- 457, 21
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 4 Oct 2013
- Updated
- 18 Aug 2015
Overview
Keypad 47 is an open-source printed circuit board by soupie-62, from the soupie-62/Keypad repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 99.1 × 59.7 mm with 109 parts on 73 nets, routed with 457 tracks and 21 vias.
It is built around the TCA8418RTW. Its parts include 49 diodes, 49 switches, 4 resistors, 1 capacitor and 1 IC. It belongs with the keyboards and input boards of this library.
Main components
1README
README.mdVersion 2C:
100mm x 60mm
Small enough for cheaper PCB costs
Problems:
Mounting holes too close too switches
[
]
Version 2B:
----------
49 keys, 120 mm x 55 mm board
Improved button spacing, better mounting hole placement
Problem: Itead Studio want boards <10 cm (100mm)
Need to move mounting holes, and squeeze buttons together a bit…
Version 2A:
----------
44 keys, 10cm x 5cm board
Improved button spacing, better mounting hole placement
Version 1:
----------
49 keys, 10cm x 5cm board
Parts
109| Qty | Value | Footprint | References |
|---|---|---|---|
| 49 | 1n914 | SOD_323 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +33 |
| 49 | MX | Keypad:TACTILE_EVQPQ_5MM | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +33 |
| 4 | P*** | 1_Pin | 1PIN, 1PIN, 1PIN, 1PIN |
| 2 | 10K | SM0805 | R1, R2 |
| 2 | 4K7 | SM0805 | R3, R4 |
| 1 | 1u | SM0805 | C1 |
| 1 | KBD_6 | SIL-6 | P1 |
| 1 | TCA8418 | QFN24 | U1 |
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Questions
How big is the Keypad 47 PCB?
It measures 99.1 × 59.7 mm and has 2 copper layers, 2.03 mm thick.
What parts does the Keypad 47 use?
109 parts, built around the TCA8418RTW. 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 Keypad 47 KiCad files?
From the soupie-62/Keypad repository on GitHub, at the commit this page was made from: the board is kicad/47_Button/Keypad_47.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keypad 47 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).