Keypad
About the Keypad PCB
Keypad is an open source PCB design by soupie-62, published on GitHub under the GPL-3.0 license. It is a board measuring 99.1 × 59.7 mm, with 106 components from 8 distinct parts.
Other key parts include the TCA8418. By type, the board carries 49 switches, 49 diodes, 4 resistors, 1 IC, 1 connector and 1 capacitor.
It belongs with the keyboards designs in this gallery.
From the project
Pmod compatible I2C keyboard
Version 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 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
Main components on the Keypad
Keypad bill of materials (BOM)
106 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TCA8418 | QFN24 | U1 |
| 1 | KBD_6 | SIL-6 | P1 |
| 1 | P*** | 1_Pin | 1PIN |
| 49 | MX | TACTILE_EVQPQ_5MM | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +41 |
| 49 | 1n914 | SOD_323 | D1, D2, D3, D4, D5, D6, D7, D8 +41 |
| 1 | 1u | SM0805 | C1 |
| 2 | 10K | SM0805 | R1, R2 |
| 2 | 4K7 | SM0805 | R3, R4 |
Keypad design files
The KiCad project lives in the soupie-62/Keypad repository on GitHub; these links point at the commit this page was built from.
Keypad: common questions
How big is the Keypad PCB?
The Keypad measures 99.1 × 59.7 mm and is 2.032 mm thick.
How many components are on the Keypad?
106 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the Keypad design files?
From the soupie-62/Keypad repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Keypad design in my own project?
Yes, under the terms of its GPL-3.0 license, which soupie-62 chose for the repository.
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