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Onekey left

cosmosalad·GearSeries·Onekey/pcb/onekey_left/onekey_left.kicad_pcb

Onekey left PCB layout, top view — open source RP2040/RP2350 board by cosmosalad
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About the Onekey left PCB

Onekey left is an open source RP2040/RP2350 PCB design by cosmosalad, published on GitHub. It is a 2-layer board measuring 132.6 × 112.1 mm, with 95 components from 20 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the XC6206P332MR, SRV05-4 and W25Q128JVSIQ. By type, the board carries 29 diodes, 16 capacitors, 9 resistors, 6 connectors, 4 ICs and 1 crystal.

It belongs with the keyboards and robotics & motion designs in this gallery.

From the project

All Gear series keyboards are being uploaded.

Onekey left, from the project README
From the project README

Main components on the Onekey left

RP2040XC6206P332MRSRV05-4W25Q128JVSIQ

Onekey left bill of materials (BOM)

95 components, 20 distinct parts.

QtyPartRefs
1
RP2040
U1
1
XC6206P332MR
U2
1
SRV05-4
U3
1
W25Q128JVSIQ
U4
1
X322512MSB4SI
Y1
2
TYPE-C-31-M-13
J1, J2
1
SWD_PinSocket
J3
1
PinSocket_4P
J4
1
PinSocket_5P
J5
1
side_b_PinSocket
J9
1
MF-MSMF050-2
F1
28
kailh hotswap socket
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +20
1
kailh hotswap socket
MX29
29
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +21
9
100n
C1, C2, C4, C5, C6, C7, C8, C9 +1
5
1u
C3, C11, C12, C13, C14
2
22p
C15, C16
2
27
R1, R2
5
5.1k
R3, R4, R5, R6, R7
2
1k
R8, R9

Onekey left design files

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

Onekey left: common questions

What microcontroller does the Onekey left use?

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

How big is the Onekey left PCB?

The Onekey left measures 132.6 × 112.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Onekey left?

95 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Onekey left design files?

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

Can I use the Onekey left design in my own project?

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

Can I test firmware for the Onekey left 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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