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2 layers100 × 100 mmMechpad, the printed circuit board in 3D

mechanical keypad

Size
100 × 100 mm
Copper layers
2
Thickness
1 mm
Parts
87
Nets
82
Pads
553
Tracks, vias
512, 131
Pours
2
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
17 Oct 2023
Updated
29 Jun 2024

Overview

Mechpad is an open-source printed circuit board by techinc, from the techinc/mechpad repository on GitHub. It is a 2-layer board of 100 × 100 mm with 87 parts on 82 nets, routed with 512 tracks and 131 vias.

It is built around the AP2112K-3.3, USBLC6-2SC6 and SK6812SIDE-A. Its parts include 32 diodes, 21 capacitors, 17 switches, 6 resistors and 4 connectors. It belongs with the STM32 boards of this library.

Main components

3

README

README.md

mechanical keypad

Parts

87
QtyValueFootprintReferences
19100nFCapacitor_SMD:C_0603_1608MetricC2, C5, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +3
16D_SchottkyDiode_SMD:D_SOD-123D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20
16SK6812SIDE-Afootprints:LED_SK6812SIDE-A_4020_pinlayout_asif50505-padssecureD1, D2, D3, D4, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30, D31, D32
16SW_Push_45degButton_Switch_Keyboard:SW_Cherry_MX_1.00u_PCBSW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17
2100kResistor_SMD:R_0603_1608MetricR1, R2
21uFCapacitor_SMD:C_0603_1608MetricC1, C3
222 OhmResistor_SMD:R_0603_1608MetricR6, R7
25k1Resistor_SMD:R_0603_1608MetricR4, R5
2Conn_01x03_MaleConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ2, J4
1AP2112K-3.3Package_TO_SOT_SMD:SOT-23-5U2
1Conn_01x04_MaleConnector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_VerticalJ3
1STM32F072C8TxPackage_QFP:LQFP-48_7x7mm_P0.5mmU1
1SW_SPSTButton_Switch_SMD:SW_Push_1P1T_NO_CK_KMR2SW1
1USBLC6-2SC6Package_TO_SOT_SMD:SOT-23-6U3
1USB_C_Receptacle_USB2.0footprints:USB_C_Receptacle_HRO_TYPE-C-31-M-12J1

The 83 most common of 87 parts.

Questions

How big is the Mechpad PCB?

It measures 100 × 100 mm and has 2 copper layers, 1 mm thick.

What parts does the Mechpad use?

87 parts, built around the AP2112K-3.3, USBLC6-2SC6 and SK6812SIDE-A. 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 Mechpad KiCad files?

From the techinc/mechpad repository on GitHub, at the commit this page was made from: the board is pcb/pcb.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Mechpad design in my own project?

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

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