HardLabs

CustomMouse

RealSynarix·Cobalt-X-Zero·hardware/ie-kicad/CustomMouse/CustomMouse.kicad_pcb

CustomMouse PCB layout, top view — open source STM32 board by RealSynarix

About the CustomMouse PCB

CustomMouse is an open source STM32 PCB design by RealSynarix, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 45.1 × 74.3 mm, with 44 components from 18 distinct parts.

Its main chip is the STM32G431KBT6, from the STM32 family. By type, the board carries 17 resistors, 13 capacitors, 2 LEDs and 1 IC.

From the project

Custom Gaming Mouse

Open-source • 3D-printable • 50g balanced gaming mouse

Built around the STM32G431 and PixArt PMW3360. No bloated software. Configuration lives entirely in the browser via WebHID.

Config site: Click Me :D Works in Chrome / Edge (desktop). Plug the mouse in, hit Connect, create or edit profiles, save.

Most gaming mice force you to install closed, resource-heavy software. Cobalt-X Zero does the opposite:

Main components on the CustomMouse

STM32G431KBT6

CustomMouse bill of materials (BOM)

44 components, 18 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32G431KBT6
MCU1
6
SW_Push
DFU1, LMB1, MACRO1, MACRO2, MMB1, RMB1
1
AP2112K-3.3
REG1
1
TLV75519PDBVR
REG2
1
PMW3360DM-T2QU
SENSOR1
1
USB_C_RECEPTACLE_USB2.0_14P
USB_C_Receptacle_USB2.0_14P
USB1
1
EC10E1220501
WHEEL1
2
LED_RGBA
LED1, LED2
4
1UF
1uF
C1, C2, C9, C10
2
10NF
10nF
C3, C17
6
100NF
100nF
C7, C8, C11, C12, C14, C20
1
4.7UF
4.7uF
C13
1
39
R1
2
5.1K
5.1k
R2, R3
3
10K
10k
R4, R5, R6
1
100K
100k
R7
4
33
R8, R9, R10, R11
6
150
R12, R13, R14, R15, R16, R17

CustomMouse design files

The KiCad project lives in the RealSynarix/Cobalt-X-Zero repository on GitHub; these links point at the commit this page was built from.

CustomMouse: common questions

What microcontroller does the CustomMouse use?

The CustomMouse is built around the STM32G431KBT6, from the STM32 family.

How big is the CustomMouse PCB?

The CustomMouse measures 45.1 × 74.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CustomMouse?

44 components, from 18 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 CustomMouse design files?

From the RealSynarix/Cobalt-X-Zero 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 CustomMouse design in my own project?

Yes, under the terms of its GPL-3.0 license, which RealSynarix chose for the repository.

Can I test firmware for the CustomMouse without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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