2 layers363.5 × 84 mm
4 layers100 × 100 mm
Keypad
semicontinuity/embedded1Embedded projects
- Size
- 100 × 100 mm
- Copper layers
- 4
- Thickness
- 1.59 mm
- Parts
- 86
- Nets
- 63
- Pads
- 308
- Tracks, vias
- 702, 76
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 28 Jun 2012
- Updated
- 8 Sep 2026
Overview
Keypad is an open-source printed circuit board by semicontinuity, from the semicontinuity/embedded repository on GitHub. It is a 4-layer board of 100 × 100 mm with 86 parts on 63 nets, routed with 702 tracks and 76 vias.
It is built around the LL4148. Its parts include 32 diodes, 16 switches and 14 connectors. It belongs with the keyboards and input boards of this library.
Main components
1README
README.mdEmbedded projects.
Projects for AVR microcontrollers.
- Primitive alarm
- Primitive terminal
- Voltage relay
- Mood lamp - firmware under development
- Primitive motion sensor controller, that works in pair with primitive alarm
- Servo controller - unfinished, no firmware yet
- LED dimmer, controlled via CAN bus
- CAN bus router - firmware under development
- Roller shutter controller, controlled via CAN bus
- Humidity meter
Parts
86| Qty | Value | Footprint | References |
|---|---|---|---|
| 20 | SolderJumper_2_Open | kbd:Jumper | JP1, JP2, JP3, JP4, JP5, JP10, JP11, JP12, JP13, JP14, JP15, JP16, JP17, JP18, JP19, JP20 +4 |
| 16 | LL4148 | Diode_SMD:D_MiniMELF | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 16 | SW_PUSH | kbd:CherryMX_Hotswap | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16 |
| 16 | YS-SK6812MINI-E | kbd:YS-SK6812MINI-E | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13, LED14, LED15, LED16 |
| 4 | Conn_01x01_Female | Connector_PinSocket_2.54mm:PinSocket_1x01_P2.54mm_Horizontal | J7, J8, J9, J10 |
| 4 | Conn_01x01_Female | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Horizontal | J11, J12, J13, J14 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_ISO7380 | H1, H2, H3, H4 |
| 3 | Conn_01x08_Female | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Horizontal | J1, J2, J3 |
| 3 | Conn_01x08_Female | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Horizontal | J4, J5, J6 |
Questions
How big is the Keypad PCB?
It measures 100 × 100 mm and has 4 copper layers, 1.59 mm thick.
What parts does the Keypad use?
86 parts, built around the LL4148. 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 KiCad files?
From the semicontinuity/embedded repository on GitHub, at the commit this page was made from: the board is target/large-keypad/hardware/keypad/keypad.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keypad design in my own project?
Its repository states no licence, so its author keeps all rights: ask semicontinuity before reusing the design.
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