HardLabs

Kugel keyboard

leschi4banane·kugel-keyboard·pcb/kugel-keyboard.kicad_pcb

Kugel keyboard PCB layout, top view — open source Nordic nRF board by leschi4banane

About the Kugel keyboard PCB

Kugel keyboard is an open source Nordic nRF PCB design by leschi4banane, published on GitHub. It is a 2-layer board measuring 244 × 85.4 mm, with 139 components from 27 distinct parts.

Its main chip is the MDBT50Q, from the Nordic nRF family. Other key parts include the BQ25170DSGR and STM6601BM2DDM6F. By type, the board carries 40 diodes, 38 switches, 22 resistors, 16 capacitors, 9 connectors and 8 ICs.

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

From the project

wireless zmk keyboard with modules

Main components on the Kugel keyboard

BQ25170DSGRSTM6601BM2DDM6FMDBT50Q

Kugel keyboard bill of materials (BOM)

139 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
BQ25170DSGR
IC1, IC2
2
STM6601BM2DDM6F
IC3, IC4
2
MDBT50Q
U1, U8
2
~
U3, U5
2
IRLML6402
Q1, Q3
2
32.768kHz
Y1, Y2
4
Conn_01x15_Pin
J1, J6, J7, J13
2
USB_C_Receptacle_USB2.0_16P
J2, J8
2
Conn_01x02_Socket
J3, J12
1
Conn_01x15_Pin
J4
2
BLM18KG221SN1D
FL1, FL2
34
MX_SW_HS
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +26
4
SW_Push
SW18, SW19, SW20, SW21
34
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +26
4
PESD5V0C1ULS-Q.
D35, D36, D39, D40
2
PESD5V0S1UL_315
D37, D38
10
10u
C1, C2, C3, C4, C5, C6, C8, C9 +2
4
12p
C11, C12, C13, C14
2
0.1u
C15, C16
2
604
R1, R21
Show 7 more
QtyPartRefs
2
806K
R2, R14
2
2M
R3, R15
4
100k
R4, R6, R7, R12
4
5.1k
R5, R9, R10, R11
4
1k
R17, R18, R19, R20
2
82k
R22, R25
2
10k
R23, R24

Kugel keyboard design files

The KiCad project lives in the leschi4banane/kugel-keyboard repository on GitHub; these links point at the commit this page was built from.

Kugel keyboard: common questions

What microcontroller does the Kugel keyboard use?

The Kugel keyboard is built around the MDBT50Q, from the Nordic nRF family.

How big is the Kugel keyboard PCB?

The Kugel keyboard measures 244 × 85.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Kugel keyboard?

139 components, from 27 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 Kugel keyboard design files?

From the leschi4banane/kugel-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 Kugel keyboard design in my own project?

The repository has no license, so all rights stay with leschi4banane. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Kugel 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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