HardLabs

Keebcard

rhenisam2008-max·keebcard·PCB/KEEBCARD.kicad_pcb

Keebcard PCB layout, top view — open source RP2040/RP2350 board by rhenisam2008-max

About the Keebcard PCB

Keebcard is an open source RP2040/RP2350 PCB design by rhenisam2008-max, published on GitHub. It is a 2-layer board measuring 68.5 × 44 mm, with 5 components from 3 distinct parts.

Its main chip is the MOUDLE-SEEEDUINO-XIAO, from the RP2040/RP2350 family. Other key parts include the ER_OLEDM0.91_1x-I2C. By type, the board carries 3 switches and 2 ICs.

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

From the project

A 3-key macropad keychain with an OLED display, built for Hack Club's Stardance event.

Keebcard, from the project README
From the project README

Main components on the Keebcard

MOUDLE-SEEEDUINO-XIAOER_OLEDM0.91_1x-I2C

Keebcard bill of materials (BOM)

5 components, 3 distinct parts.

QtyPartRefs
1
MOUDLE-SEEEDUINO-XIAO
U1
1
ER_OLEDM0.91_1x-I2C
U2
3
SW_Push
SW1, SW2, SW3

Keebcard design files

The KiCad project lives in the rhenisam2008-max/keebcard repository on GitHub; these links point at the commit this page was built from.

Keebcard: common questions

What microcontroller does the Keebcard use?

The Keebcard is built around the MOUDLE-SEEEDUINO-XIAO, from the RP2040/RP2350 family.

How big is the Keebcard PCB?

The Keebcard measures 68.5 × 44 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keebcard?

5 components, from 3 distinct parts. The full bill of materials is listed on this page.

Where can I download the Keebcard design files?

From the rhenisam2008-max/keebcard repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Keebcard design in my own project?

The repository has no license, so all rights stay with rhenisam2008-max. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Keebcard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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