HardLabs

Panel

afonsus1997·Bongo-Cat-Fidget-Toy·Hardware/Bongo-Cat-Fidget-Toy-panel/panel.kicad_pcb

Panel PCB layout, top view — open source STM32 board by afonsus1997

About the Panel PCB

Panel is an open source STM32 PCB design by afonsus1997, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 176 × 161 mm, with 25 components from 13 distinct parts.

Its main chip is the STM32G030K8TX, from the STM32 family. Other key parts include the TPS63802DLAR. By type, the board carries 11 capacitors, 9 resistors, 2 ICs, 1 battery holder, 1 switch and 1 inductor.

From the project

A simple and satisfying electronic fidget toy featuring Bongo Cat. Track your taps, measure your speed, and toggle display options with intuitive controls.

A simple and satisfying electronic fidget toy featuring Bongo Cat. Track your taps, measure your speed, and toggle display options with intuitive controls.

Tap counter with automatic saving to persistent memory Tap speed measurement Milestones Sleep animation * Optional overlay display

- Requires a single CR2032 battery (positive side up)

Hold both buttons** to enable or disable the overlay

Panel, from the project README
From the project README

Main components on the Panel

STM32G030K8TXTPS63802DLAR

Panel bill of materials (BOM)

25 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32G030K8TX
STM32G030K8Tx
U1
1
TPS63802DLAR
U101
1
C70377
Battery
BT1
1
SW_SPDT_321
SW5
1
0.47UH
0.47uH
L102
2
22UF
22uF
C1, C2
2
100NF
100nF
C3, C5
2
4.7UF
4.7uF
C4, C12
5
2.2UF
2.2uF
C8, C9, C10, C11, C13
5
91K
91k
R1, R2, R4, R8, R101
1
511K
511k
R6
1
390K
390k
R11
2
4.7K
4.7k
R12, R13

Panel design files

The KiCad project lives in the afonsus1997/Bongo-Cat-Fidget-Toy repository on GitHub; these links point at the commit this page was built from.

Panel: common questions

What microcontroller does the Panel use?

The Panel is built around the STM32G030K8TX, from the STM32 family.

How big is the Panel PCB?

The Panel measures 176 × 161 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Panel?

25 components, from 13 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 Panel design files?

From the afonsus1997/Bongo-Cat-Fidget-Toy repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Panel design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Panel 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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