HardLabs

XD-keyboard

samdoes-stuff·xD-keyboard·mykeyboard/mykeyboard.kicad_pcb

XD-keyboard PCB layout, top view — open source Nordic nRF board by samdoes-stuff
Simulate this board

About the XD-keyboard PCB

XD-keyboard is an open source Nordic nRF PCB design by samdoes-stuff, published on GitHub. It is a 2-layer board measuring 269.7 × 107.9 mm, with 172 components from 92 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 64 diodes, 61 relays, 24 capacitors, 11 resistors, 4 inductors and 3 ICs.

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

From the project

It is a dual functionality keyboard which supports wireless(Bluetooth) & wired connection without any switch. This keyboard is powered by ZMK firmware with a onboard battery with Ultra low power optimization.

It is a dual functionality keyboard which supports wireless(Bluetooth) & wired connection without any switch. This keyboard is powered by ZMK firmware with a onboard battery with Ultra low power optimization.

Adafruit github repo for nrf52 has been used to make the firmware for Our on board MCU.

It is a PCB keyboard which has a 4 layer or 6 layer and was designed by both Kicad(Schematics) & Easyeda Pro(Routing). JLCPCB is used for PCB fabrication.

XD-keyboard, from the project README
From the project README

Main components on the XD-keyboard

BQ21040DBVRnRF52840ESDR0502NMUTAG

XD-keyboard bill of materials (BOM)

172 components, 92 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ21040DBVR
U1
1
nRF52840
U2
1
ESDR0502NMUTAG
U3
1
32.768 kHz
Y1
1
32MHz
Y2
1
USB-C
P1
1
~~,`
K0
1
!,1
K1
1
@,2
K2
1
#,3
K3
1
$,4
K4
1
%,5
K5
1
^,6
K6
1
&,7
K7
1
*,8
K8
1
(,9
K9
1
),0
K10
1
_,-
K11
1
+,=
K12
1
Backspace
K13
Show 72 more
QtyPartRefs
1
Tab
K14
1
Q
K15
1
W
K16
1
E
K17
1
R
K18
1
T
K19
1
Y
K20
1
U
K21
1
I
K22
1
O
K23
1
P
K24
1
{,[
K25
1
},]
K26
1
|,\
K27
1
Caps Lock
K28
1
A
K29
1
S
K30
1
D
K31
1
F
K32
1
G
K33
1
H
K34
1
J
K35
1
K
K36
1
L
K37
1
:,;
K38
1
",'
K39
1
Enter
K40
1
Shift
K41
1
Z
K42
1
X
K43
1
C
K44
1
V
K45
1
B
K46
1
N
K47
1
M
K48
1
<,,
K49
1
>,.
K50
1
?,/
K51
1
Shift
K52
2
Ctrl
K53, K60
2
Win
K54, K58
2
Alt
K55, K57
1
Blank
K56
1
Menu
K59
1
NetTie_2
NT1
1
Reset
SW1
61
D
D0, D1, D2, D3, D4, D5, D6, D7 +53
1
B5819W SL
D61
1
CHG
D62
1
BLUE
D63
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

XD-keyboard design files

The KiCad project lives in the samdoes-stuff/xD-keyboard repository on GitHub; these links point at the commit this page was built from.

XD-keyboard: common questions

What microcontroller does the XD-keyboard use?

The XD-keyboard is built around the nRF52840, from the Nordic nRF family.

How big is the XD-keyboard PCB?

The XD-keyboard measures 269.7 × 107.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the XD-keyboard?

172 components, from 92 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 XD-keyboard design files?

From the samdoes-stuff/xD-keyboard 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 XD-keyboard design in my own project?

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

Can I test firmware for the XD-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.

Similar boards