Bongo-Cat-Fidget-Toy
About the Bongo-Cat-Fidget-Toy PCB
Bongo-Cat-Fidget-Toy 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 42.5 × 47 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
Main components on the Bongo-Cat-Fidget-Toy
Bongo-Cat-Fidget-Toy bill of materials (BOM)
25 components, 13 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32G030K8TX STM32G030K8Tx | LQFP-32_7x7mm_P0.8mm | U1 |
| 1 | TPS63802DLAR | VREG_TPS63802DLAR | U101 |
| 1 | C70377 Battery | BAT-TH_CR2032-BS-6-1 | BT1 |
| 1 | SW_SPDT_321 | SW-SMD_SK-3245S-L1-A-1 | SW5 |
| 1 | 0.47UH 0.47uH | L_Wurth_WE-LQSH-2010 | L102 |
| 2 | 22UF 22uF | C_0603_1608Metric | C1, C2 |
| 2 | 100NF 100nF | C_0603_1608Metric | C3, C5 |
| 2 | 4.7UF 4.7uF | C_0603_1608Metric | C4, C12 |
| 5 | 2.2UF 2.2uF | C_0603_1608Metric | C8, C9, C10, C11, C13 |
| 5 | 91K 91k | R_0603_1608Metric | R1, R2, R4, R8, R101 |
| 1 | 511K 511k | R_0603_1608Metric | R6 |
| 1 | 390K 390k | R_0603_1608Metric | R11 |
| 2 | 4.7K 4.7k | R_0603_1608Metric | R12, R13 |
Bongo-Cat-Fidget-Toy 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.
Bongo-Cat-Fidget-Toy: common questions
What microcontroller does the Bongo-Cat-Fidget-Toy use?
The Bongo-Cat-Fidget-Toy is built around the STM32G030K8TX, from the STM32 family.
How big is the Bongo-Cat-Fidget-Toy PCB?
The Bongo-Cat-Fidget-Toy measures 42.5 × 47 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Bongo-Cat-Fidget-Toy?
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 Bongo-Cat-Fidget-Toy design files?
From the afonsus1997/Bongo-Cat-Fidget-Toy 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 Bongo-Cat-Fidget-Toy 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 Bongo-Cat-Fidget-Toy 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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