HardLabs

Keke

karnxx·kayboard·PCB/EACH/middle/keke.kicad_pcb

Keke PCB layout, top view — open source Nordic nRF board by karnxx

About the Keke PCB

Keke is an open source Nordic nRF PCB design by karnxx, published on GitHub. It is a 2-layer board measuring 29.4 × 23 mm, with 64 components from 5 distinct parts.

Its main chip is the XIAO-NRF52840-SMD, from the Nordic nRF family. By type, the board carries 30 diodes, 2 resistors, 1 IC and 1 battery holder.

It belongs with the keyboards designs in this gallery.

Keke, from the project README
From the project README

Main components on the Keke

XIAO-NRF52840-SMD

Keke bill of materials (BOM)

64 components, 5 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO-NRF52840-SMD
XIAO-nRF52840-SMD
U4
30
SW_Push
*1, +1, -2, .2, /1, ctrlt1, ctrlw1, delete2 +22
1
Battery
BT3
30
D
D80, D81, D82, D83, D84, D85, D86, D87 +22
2
R
R5, R6

Keke design files

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

Keke: common questions

What microcontroller does the Keke use?

The Keke is built around the XIAO-NRF52840-SMD, from the Nordic nRF family.

How big is the Keke PCB?

The Keke measures 29.4 × 23 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keke?

64 components, from 5 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Keke design files?

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

Can I use the Keke design in my own project?

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

Can I test firmware for the Keke without the hardware?

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

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