HardLabs

Keybird42

fanf2·kbd·keybird42/pcb/keybird42.kicad_pcb

Keybird42 PCB layout, top view — open source RP2040/RP2350 board by fanf2

About the Keybird42 PCB

Keybird42 is an open source RP2040/RP2350 PCB design by fanf2, published on GitHub under the Custom license license. It is a 2-layer board measuring 420.3 × 95.3 mm, with 174 components from 89 distinct parts.

Its main chip is the RP2040-Tiny, from the RP2040/RP2350 family. By type, the board carries 86 switches, 86 diodes, 1 IC and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

my homemade keyboard projects

http://www.keyboard-layout-editor.com/#/gists/dae8374b0ce94d88869aaf67bffb43e0

The main niggle about keybird69 is the lack of gap between delete & return, and the function column. Sculpted keycaps go some way to mitigating it, but not completely.

I played around with layouts that have a separated arrow cluster and function columns (like a reduced 1800 layout), but they make it harder to use the arrow keys with the thumb on a modifier.

Main components on the Keybird42

RP2040-Tiny

Keybird42 bill of materials (BOM)

174 components, 89 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040-Tiny
U1
1
piinch FFC
J1
1
F1
SW111
1
ESC
SW112
1
3#
SW113
1
6^
SW114
1
9(
SW115
1
PLUS
SW116
1
F14
SW117
1
F2
SW121
1
1!
SW122
1
4$
SW123
1
7&
SW124
1
0)
SW125
1
LSLASH
SW126
1
F15
SW127
1
F3
SW131
1
2@
SW132
1
5%
SW133
1
8*
SW134
Show 69 more
QtyPartRefs
1
MINUS
SW135
1
LQUOTE
SW136
1
F16
SW137
1
F4
SW211
1
TAB
SW212
1
E
SW213
1
Y
SW214
1
I
SW215
1
LBRAC
SW216
1
F17
SW217
1
F5
SW221
1
Q
SW222
1
R
SW223
1
O
SW225
1
RBRAC
SW226
1
F18
SW227
1
F6
SW231
1
W
SW232
1
T
SW233
1
U
SW234
1
P
SW235
1
DELETE
SW236
1
F19
SW237
1
F7
SW311
1
LCTRL
SW312
1
G
SW314
1
K
SW315
1
RQUOTE
SW316
1
F20
SW317
1
F8
SW321
1
A
SW322
1
D
SW323
1
H
SW324
1
L
SW325
1
UP
SW327
1
F9
SW331
1
S
SW332
1
F
SW333
1
J
SW334
1
COLON
SW335
1
RETURN
SW336
1
F21
SW337
1
F10
SW411
1
LSHIFT
SW412
1
X
SW413
1
B
SW414
1
COMMA
SW415
1
RSLASH
SW416
1
LEFT
SW417
1
F11
SW421
1
C
SW423
1
N
SW424
1
DOT
SW425
1
RSHIFT
SW426
1
DOWN
SW427
1
F12
SW431
1
Z
SW432
1
V
SW433
1
M
SW434
1
RCTRL
SW436
1
RIGHT
SW437
1
LFUN
SW501
1
LALT
SW502
1
LMETA
SW503
1
SPACE
SW504
1
RMETA
SW505
1
RALT
SW506
1
RFUN
SW507
86
1N4148W
D111, D112, D113, D114, D115, D116, D117, D121 +78

Keybird42 design files

The KiCad project lives in the fanf2/kbd repository on GitHub; these links point at the commit this page was built from.

Keybird42: common questions

What microcontroller does the Keybird42 use?

The Keybird42 is built around the RP2040-Tiny, from the RP2040/RP2350 family.

How big is the Keybird42 PCB?

The Keybird42 measures 420.3 × 95.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keybird42?

174 components, from 89 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 Keybird42 design files?

From the fanf2/kbd 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 Keybird42 design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Keybird42 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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