HardLabs

Gear40

cosmosalad·GearSeries·Gear40/pcb/Gear40.kicad_pcb

Gear40 PCB layout, top view — open source RP2040/RP2350 board by cosmosalad
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About the Gear40 PCB

Gear40 is an open source RP2040/RP2350 PCB design by cosmosalad, published on GitHub. It is a 2-layer board measuring 269.9 × 93.2 mm, with 208 components from 26 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the XC6206P332MR, SRV05-4, W25Q128JVSIQ and W25Q128JVPIQ. By type, the board carries 44 diodes, 32 capacitors, 18 resistors, 12 connectors, 10 ICs and 2 crystals.

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

From the project

All Gear series keyboards are being uploaded.

Gear40, from the project README
From the project README

Main components on the Gear40

RP2040XC6206P332MRSRV05-4W25Q128JVSIQW25Q128JVPIQ

Gear40 bill of materials (BOM)

208 components, 26 distinct parts.

QtyPartRefs
2
RP2040
U1, U5
2
XC6206P332MR
U2, U6
2
SRV05-4
U3, U7
2
W25Q128JVSIQ
U4, U8
2
W25Q128JVPIQ
U9, U10
2
X322512MSB4SI
Y1, Y2
4
TYPE-C-31-M-14
J1, J2, J4, J5
2
SWD
J3, J6
1
oled_L
J7
1
oled_R
J8
1
PJ-342C_L
J9
1
PJ-342C_R
J10
1
pad_L
J11
1
pad_R
J12
42
choc_SW_solder
CH1, CH2, CH3, CH4, CH5, CH6, CH7, CH8 +34
2
choc_SW_solder
CH22, CH42
2
MF-MSMF050-2
F1, F2
42
MX_SW_solder
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +34
2
MX_SW_solder
MX22, MX42
44
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +36
Show 6 more
QtyPartRefs
18
100n
C1, C2, C4, C5, C6, C7, C8, C9 +10
10
1u
C3, C11, C12, C13, C14, C19, C27, C28 +2
4
22p
C15, C16, C31, C32
4
27
R1, R2, R10, R11
10
5.1k
R3, R4, R5, R6, R7, R12, R13, R14 +2
4
1k
R8, R9, R17, R18

Gear40 design files

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

Gear40: common questions

What microcontroller does the Gear40 use?

The Gear40 is built around the RP2040, from the RP2040/RP2350 family.

How big is the Gear40 PCB?

The Gear40 measures 269.9 × 93.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Gear40?

208 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the Gear40 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 Gear40 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 Gear40 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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