HardLabs

KBoard

YakshithK·KBoard·kboard_pcb/KBoard.kicad_pcb

KBoard PCB layout, top view — open source RP2040/RP2350 board by YakshithK

About the KBoard PCB

KBoard is an open source RP2040/RP2350 PCB design by YakshithK, published on GitHub. It is a 2-layer board measuring 306 × 125 mm, with 199 components from 17 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q16JVSS, XC6206 and ESD. By type, the board carries 85 switches, 84 diodes, 17 capacitors, 6 resistors, 4 ICs and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

An 84-key custom mechanical keyboard built from scratch around the RP2040. No dev module: the RP2040, flash, regulator, USB-C, crystal, and support circuitry are all on the board. Uses Cherry MX Browns.

An 84-key custom mechanical keyboard built from scratch around the RP2040. No dev module: the RP2040, flash, regulator, USB-C, crystal, and support circuitry are all on the board. Uses Cherry MX Browns.

The PCB is a basic 2-layer pcb (306 x 125 mm) using an RP2040 SoC with a USB-C connector. There's also a switch broken on the bottom for boot/reset.

Build the firmware with qmk compile -kb kboard -km default (the firmware/kboard folder must be linked or copied to qmkfirmware/keyboards/kboard). Flash the resulting UF2, also bundled at production/firmware/kboarddefault.uf2, by double-pressing…

KBoard, from the project README
From the project README

Main components on the KBoard

RP2040W25Q16JVSSXC6206ESD

KBoard bill of materials (BOM)

199 components, 17 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040
U1
1
W25Q16JVSS
U2
1
XC6206
U3
1
ESD
U4
1
Crystal_GND24
Y1
1
USB-C
J2
1
500mA
F1
84
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +76
1
SW_Push
SW85
84
1N4148W
D1, D2, D3, D4, D5, D6, D7, D8 +76
10
0.1uF
C1, C4, C5, C9, C10, C11, C12, C13 +2
2
15pF
C2, C3
4
1uF
C6, C7, C16, C17
1
10uF
C8
2
1K
R1, R2
2
27R
R3, R4
2
5.1K
R5, R6

KBoard design files

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

KBoard: common questions

What microcontroller does the KBoard use?

The KBoard is built around the RP2040, from the RP2040/RP2350 family.

How big is the KBoard PCB?

The KBoard measures 306 × 125 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the KBoard?

199 components, from 17 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 KBoard design files?

From the YakshithK/KBoard 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 KBoard design in my own project?

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

Can I test firmware for the KBoard 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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