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Wlfkbd

WillACosta·wlfkbd·keyboard/kicad/revisions/wolf_keyboard/wlfkbd.kicad_pcb

Wlfkbd PCB layout, top view — open source Nordic nRF board by WillACosta
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About the Wlfkbd PCB

Wlfkbd is an open source Nordic nRF PCB design by WillACosta, published on GitHub under the MIT license. It is a 2-layer board measuring 289.7 × 109.3 mm, with 198 components from 29 distinct parts.

Its main chip is the XIAO-NRF52840-SMD, from the Nordic nRF family. By type, the board carries 88 diodes, 50 resistors, 40 switches, 8 capacitors, 4 transistors and 2 ICs.

It belongs with the keyboards and iot & wireless designs in this gallery.

From the project

The WLF is a 40-key split keyboard (20 keys per half) with a column-staggered matrix and a splayed thumb cluster.

The WᛝLF Keyboard, or simply wlfkbd, is a 40-key keyboard featuring only 2 outer-pinky keys to improve ergonomics. This keyboard takes inspiration from well-known open-source keyboards such as "Corne", "Klor", and "Delta/Omega".

- Wireless BLE (XIAO nRF52840). - Ultra-low-profile build (=700mAh). - Minimalist and industrial design. - Aluminum case. - MX-Spacing. - White backlight. - RGB Status LEDs.

Wlfkbd, from the project README
From the project README

Main components on the Wlfkbd

XIAO-NRF52840-SMD

Wlfkbd bill of materials (BOM)

198 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
XIAO-NRF52840-SMD
XIAO-nRF52840-SMD
U1, U3
1
AO3400A
Q1
2
AO3407A
Q2, Q3_R1
1
AO3400A
Q4_R1
1
CONN_01X02_PIN
Conn_01x02_Pin
JST1
1
Conn_01x02_Pin
JST2_R1
1
C778186
SW_SPDT
PSW1
1
SW_SPDT
PSW2_R1
1
RSW1
RSW1
1
RSW1
RSW2_R1
40
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +32
20
1N4148W
D1, D2, D3, D4, D5, D6, D7, D8 +12
4
SK6812MINI-E
D21, D22, D23, D24
40
LED
D25, D26, D29, D30, D31, D32, D33, D34 +32
4
SK6812MINI-E
D47_R1, D48_R1, D50_R1, D52_R1
20
1N4148W
D61_R1, D62_R1, D63_R1, D64_R1, D72_R1, D73_R1, D74_R1, D75_R1 +12
2
C19702
10uF
C1, C3
2
C1591
100nF
C2, C4
2
10uF
C5_R1, C7_R1
2
100nF
C6_R1, C8_R1
Show 9 more
QtyPartRefs
40
1K
R1, R2, R3, R4, R7, R8, R9, R10 +32
2
100R
R706, R710
1
10K
10k
R707
2
100R
R708_R1, R713_R1
1
10k
R709_R1
1
100K
100k
R711
1
330R
R712
1
100k
R714_R1
1
330R
R715_R1

Wlfkbd design files

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

Wlfkbd: common questions

What microcontroller does the Wlfkbd use?

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

How big is the Wlfkbd PCB?

The Wlfkbd measures 289.7 × 109.3 mm, has 2 copper layers and is 1.3 mm thick.

How many components are on the Wlfkbd?

198 components, from 29 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 Wlfkbd design files?

From the WillACosta/wlfkbd 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 Wlfkbd design in my own project?

Yes, under the terms of its MIT license, which WillACosta chose for the repository.

Can I test firmware for the Wlfkbd 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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