HardLabs

SMK test board

mburger89·SMK_test_board·smk_test_board/smk_test_board.kicad_pcb

SMK test board layout, top view — open source board by mburger89

About the SMK test board

SMK test board is an open source PCB design by mburger89, published on GitHub. It is a 2-layer board measuring 76 × 113.2 mm, with 45 components from 10 distinct parts.

Other key parts include the XIAO_ESP32C6 and SN74AHCT1G125DBVR. By type, the board carries 12 capacitors, 9 diodes, 8 switches, 2 ICs, 2 connectors and 2 resistors.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

A 3×3 macropad built around the Seeed XIAO ESP32-C6, with a rotary encoder and per-key RGB. It exists to validate the SMK keyboard firmware and the SMK Configurator editor on real hardware — small enough to be cheap, complete enough to exercise every subsystem the full keyboard d

A 3×3 macropad built around the Seeed XIAO ESP32-C6, with a rotary encoder and per-key RGB. It exists to validate the SMK keyboard firmware and the SMK Configurator editor on real hardware — small enough to be cheap, complete enough to exercise every subsystem the full keyboard depends on.

Two of those subsystems have never run against physical hardware at all: the RMT LED driver and BatteryMonitor. This board is where they get their first test.

Main components on the SMK test board

XIAO_ESP32C6SN74AHCT1G125DBVR

SMK test board bill of materials (BOM)

45 components, 10 distinct parts.

QtyPartRefs
1
XIAO_ESP32C6
U1
1
SN74AHCT1G125DBVR
U2
1
Battery JST-SH
J1
1
BAT+ / BAT- flying leads
J2
1
EC11 (VERIFY before fab)
ENC1
9
SK6812MINI-E
RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, RGB7, RGB8 +1
8
KS-2P02B01-02
SW00, SW01, SW10, SW11, SW12, SW20, SW21, SW22
9
1N4148W
D00, D01, D02, D10, D11, D12, D20, D21 +1
12
100n
C1, C2, C3, C4, C5, C6, C7, C8 +4
2
200k
R1, R2

SMK test board design files

The KiCad project lives in the mburger89/SMK_test_board repository on GitHub; these links point at the commit this page was built from.

SMK test board: common questions

How big is the SMK test board?

The SMK test board measures 76 × 113.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SMK test board?

45 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the SMK test board design files?

From the mburger89/SMK_test_board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the SMK test board design in my own project?

The repository has no license, so all rights stay with mburger89. Use it as a reference, and ask the author before reusing the design.

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