HardLabs

Keyboard

tritoke·keyboard·pcb/keyboard.kicad_pcb

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

About the Keyboard PCB

Keyboard is an open source Nordic nRF PCB design by tritoke, published on GitHub. It is a 4-layer board measuring 304.8 × 119.1 mm, with 199 components from 50 distinct parts.

Its main chip is the nRF52840, from the Nordic nRF family. Other key parts include the TP4056-42-ESOP8 and DW01A. By type, the board carries 74 diodes, 69 relays, 23 capacitors, 15 resistors, 3 ICs and 3 transistors.

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

From the project

A 65% keyboard design from scratch with PCB, case and firmware. (planned)

This is my efforts towards making the exact keyboard entirely for fun.

Wants: - Usable over USB or Bluetooth - 65% with arrow keys, ISO enter and the four keys on the right

Progress: - PCB (rev1 done) - Case (freeCAD is kicking my ass) - Firmware (I have some thoughts and that is all)

Keyboard, from the project README
From the project README

Main components on the Keyboard

nRF52840TP4056-42-ESOP8DW01A

Keyboard bill of materials (BOM)

199 components, 50 distinct parts.

QtyPartRefs
1
nRF52840
U1
1
TP4056-42-ESOP8
U2
1
DW01A
U3
2
FDN340P
Q1, Q3
1
FS8025A
Q2
1
32MHz
X1
1
Conn_ARM_JTAG_SWD_10
J1
1
USB_C_Receptacle_USB2.0_16P
J2
1
Conn_Coaxial
J3
1
Keystone 1042
BT1
1
315mA
F1
59
KEYSW
K1, K2, K3, K4, K5, K6, K7, K8 +51
1
KEYSW
K14
5
KEYSW
K16, K46, K61, K62, K63
1
KEYSW
K29
2
KEYSW
K31, K58
1
KEYSW
K67
2
SW_SPST
SW1, SW2
1
NTC
TH1
69
D
D1, D2, D3, D4, D5, D6, D7, D8 +61
Show 30 more
QtyPartRefs
1
PRTR5V0U2X
D44
1
1SMB5918BT3G
D64
2
LED
D65, D66
1
MSS1P4-M3/89A
D68
1
4.7nH
L1
1
10µH
L2
1
15nH
L3
2
12pF
C1, C2
1
0.8pF
C3
1
0.5pF
C4
6
100nF
C5, C7, C8, C12, C17, C18
4
4.7µF
C6, C19, C20, C21
1
100pF
C9
3
NC
C10, C13, C22
2
10µF
C11, C23
2
1.0µF
C14, C15
1
47nF
C16
2
5k1
R1, R2
1
10R
R3
2
1k
R4, R5
1
0.4
R6
1
2k2
R7
1
100R
R8
1
1.0K
R9
1
10k
R10
1
10k
R11
1
420k
R12
1
44k
R13
1
100k
R14
1
250k
R15

Keyboard design files

The KiCad project lives in the tritoke/keyboard 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 304.8 × 119.1 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Keyboard?

199 components, from 50 distinct parts. The full bill of materials is listed on this page.

Where can I download the Keyboard design files?

From the tritoke/keyboard 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?

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

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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