HardLabs

Kayboard

karnxx·kayboard·PCB/EACH/left/kayboard.kicad_pcb

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

About the Kayboard PCB

Kayboard is an open source Nordic nRF PCB design by karnxx, published on GitHub. It is a 2-layer board measuring 214.1 × 146.8 mm, with 82 components from 14 distinct parts.

Its main chip is the XIAO-NRF52840-SMD, from the Nordic nRF family. By type, the board carries 40 diodes, 6 relays, 4 crystals, 3 resistors, 1 IC and 1 module.

It belongs with the keyboards designs in this gallery.

Kayboard, from the project README
From the project README

Main components on the Kayboard

XIAO-NRF52840-SMD

Kayboard bill of materials (BOM)

82 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO-NRF52840-SMD
XIAO-nRF52840-SMD
U1
1
SW_Push
a1
1
SW_Push
q1
4
SW_Push
X2, X3, x1, y1
1
Battery
BT1
22
SW_Push
G1, `1, alt1, b1, caps1, ctrl1, e1, esc1 +14
1
SW_Push
f1
6
SW_Push
k1, k2, k3, k4, k5, k6
1
SW_Push
s1
39
D
D1, D2, D3, D4, D5, D6, D7, D8 +31
1
SW_Push
d16
1
SW_Push
c1
2
R
R2, R14
1
SW_Push
r1

Kayboard design files

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

Kayboard: common questions

What microcontroller does the Kayboard use?

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

How big is the Kayboard PCB?

The Kayboard measures 214.1 × 146.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Kayboard?

82 components, from 14 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 Kayboard 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 Kayboard 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 Kayboard 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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