2 layers166.7 × 133.4 mm Numpad, the printed circuit board in 3D

Numpad

Size: 166.7 × 133.4 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 84
Nets: 54
Pads: 284
Tracks, vias: 335, 7
Pours: 1
Routed: Yes
KiCad: KiCad 7 (file 20221018)
Created: 12 Jan 2024
Updated: 12 Jan 2024

Overview

Numpad is an open-source printed circuit board by engstad, from the engstad/Numpad repository on GitHub. It is a 2-layer board of 166.7 × 133.4 mm with 84 parts on 54 nets, routed with 335 tracks and 7 vias.

Its parts include 35 diodes, 34 switches, 1 resistor and 1 IC. It belongs with the STM32 boards of this library.

Parts

Qty	Value	Footprint	References
34	~	Diode_SMD:D_SOD-123	D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +18
31	~	PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u	SW1, SW2, SW10, SW11, SW12, SW13, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW23, SW24, SW25 +15
10	MountingHole	MountingHole:MountingHole_2.7mm_M2.5_ISO7380_Pad	H1, H2, H3, H4, H5, H6, H7, H8, H9, H10
3	Stabilizer	PCM_Mounting_Keyboard_Stabilizer:Stabilizer_Cherry_MX_2.00u	ST1, ST2, ST3
2	~	PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u_90deg	SW14, SW22
1	330	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R2
1	LED	LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D30
1	STM32F042-Tiny-0.1	Engstad:STM32F042-Tiny	U1
1	~	PCM_Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_2.00u	SW26

Questions

How big is the Numpad PCB?

It measures 166.7 × 133.4 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Numpad use?

84 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 Numpad KiCad files?

From the engstad/Numpad repository on GitHub, at the commit this page was made from: the board is Numpad.kicad_pcb and its schematic Numpad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Numpad design in my own project?

Its repository states no licence, so its author keeps all rights: ask engstad before reusing the design.

Category and platform

STM32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/engstad-numpad" title="Numpad in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/engstad-numpad.jpg" alt="Numpad" width="1200" height="900">

A picture that opens the board, for a README

[![Numpad](https://pcbkit.io/embed/boards/engstad-numpad.jpg?size=s)](https://pcbkit.io/boards/engstad-numpad)

Source

Repository: engstad/Numpad
Board file: Numpad.kicad_pcb
Commit: 7f1495d
Licence: Not stated

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