HardLabs

Keyboard

byrantech·laptop·keyboard/keyboard.kicad_pcb

Keyboard PCB layout, top view — open source Nordic nRF board by byrantech

About the Keyboard PCB

Keyboard is an open source Nordic nRF PCB design by byrantech, published on GitHub under the MIT license. It is a 2-layer board measuring 262.5 × 109.6 mm, with 206 components from 108 distinct parts.

Its main chip is the nRF52840, from the Nordic nRF family. Other key parts include the BQ21040DBVR and ESDR0502NMUTAG. By type, the board carries 81 diodes, 78 relays, 24 capacitors, 11 resistors, 4 inductors and 3 ICs.

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

From the project

anyon_e, a highly integrated, high end, open source laptop. Attempt the impossible.

nRF52840-based wireless mechanical keyboard with Cherry ULP switches.

Keycap model: https://cad.onshape.com/documents/84a4de0481dc58ca7a1fb22c/w/5ff1a0cc24fa744c0cb7a3a5/e/e79186c43fe11bbd17587153

The full keyboard CAD is in the main chassis OnShape link.

Other sized keycaps modified from Carin keyboard with Blender (very sketchy and not very reproducible, so I won't put it up)

Main components on the Keyboard

BQ21040DBVRnRF52840ESDR0502NMUTAG

Keyboard bill of materials (BOM)

206 components, 108 distinct parts.

QtyPartRefs
1
BQ21040DBVR
U1
1
nRF52840
U2
1
ESDR0502NMUTAG
U3
1
32.768 kHz
Y1
1
32MHz
Y2
1
USB-C
P1
1
Esc
K1
1
F1
K2
1
F2
K3
1
F3
K4
1
F4
K5
1
F5
K6
1
F6
K7
1
F7
K8
1
F8
K9
1
F9
K10
1
F10
K11
1
F11
K12
1
F12
K13
1
~~,`
K15
Show 88 more
QtyPartRefs
1
!,1
K16
1
@,2
K17
1
#,3
K18
1
$,4
K19
1
%,5
K20
1
^,6
K21
1
&,7
K22
1
*,8
K23
1
(,9
K24
1
),0
K25
1
_,-
K26
1
+,=
K27
1
Backspace
K28
1
Tab
K29
1
Q
K30
1
W
K31
1
E
K32
1
R
K33
1
T
K34
1
Y
K35
1
U
K36
1
I
K37
1
O
K38
1
P
K39
1
{,[
K40
1
},]
K41
1
|,\
K42
1
Caps Lock
K43
1
A
K44
1
S
K45
1
D
K46
1
F
K47
1
G
K48
1
H
K49
1
J
K50
1
K
K51
1
L
K52
1
:,;
K53
1
",'
K54
1
Enter
K55
2
Shift
K56, K68
1
Z
K57
1
X
K58
1
C
K59
1
V
K60
1
B
K61
1
N
K62
1
M
K63
1
<,,
K64
1
>,.
K65
1
?,/
K66
1
↑
K67
1
Fn
K69
1
Ctrl
K70
2
Alt
K71, K76
2
Meta
K72, K75
2
Space
K73, K74
1
←
K77
1
↓
K78
1
→
K79
1
NetTie_2
NT1
1
Reset
SW1
1
CHG
D1
1
B5819W SL
D2
1
BLUE
D3
78
D
D4, D5, D6, D7, D8, D9, D10, D11 +70
1
15nH
L1
2
10uH
L2, L3
1
3.9nH
L4
4
4.7uF
C1, C4, C13, C19
4
1uF
C2, C14, C15, C20
1
47nF
C3
1
1nF
C5
1
100pF
C6
4
100nF
C7, C16, C17, C18
4
15pF
C8, C9, C21, C22
1
1.5pF
C10
2
1pF
C11, C12
1
10nF
C23
1
1000pF/NC
C24
1
0R
R1
2
10k
R2, R4
1
2.7k
R3
1
1.5k
R5
2
5.1k
R6, R7
2
2M
R8, R9
1
10M
R10
1
1M
R11

Keyboard design files

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

Keyboard: common questions

What microcontroller does the Keyboard use?

The Keyboard is built around the nRF52840, from the Nordic nRF family.

How big is the Keyboard PCB?

The Keyboard measures 262.5 × 109.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keyboard?

206 components, from 108 distinct parts. The full bill of materials is listed on this page.

Where can I download the Keyboard design files?

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

Can I use the Keyboard design in my own project?

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

Can I test firmware for the Keyboard 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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