2 layers23.4 × 27 mm
2 layers85.4 × 102.1 mm
Simon pocket panel
JorisBar/Simon_pocket1A pocket version of the classic Simon says game
- Size
- 85.4 × 102.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 378
- Nets
- 52
- Pads
- 1,296
- Tracks, vias
- 2,070, 261
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 7 Aug 2026
- Updated
- 31 Aug 2026
Overview
Simon pocket panel is an open-source printed circuit board by JorisBar, from the JorisBar/Simon_pocket repository on GitHub. It is a 2-layer board of 85.4 × 102.1 mm with 378 parts on 52 nets, routed with 2,070 tracks and 261 vias.
Its parts include 117 resistors, 90 capacitors, 36 diodes, 36 connectors and 36 switches. It belongs with the STM32 boards of this library.
README
README.mdSimon_pocket – A pocket version of the classic Simon says game
Simon_pocket is a pocket sized memory training game. Players have to repeat a button sequence that gets longer each round. This project includes a custom PCB, bare metal programming for an STM32 MCU and a 3D printed housing.
Gameplay
Hardware Architecture
Component Selection and Design Considerations
- Microcontroller: The STM32F030C6T6 was chosen for being inexpensive (0.5€ @ 30+ Qty) and having good documentation and support.
- Battery: The CR2032 was selected because of the 3V nominal voltage, compact size and availability.
- Sound system: Buzzers/speakers had to be omitted due to the high internal resistance of the battery.
- Power on: Due to space constraints, a dedicated power button was not possible. Instead, every button is configured to wake up the MCU from STOP mode.
- Standby current: To decrease standby current to ~6uA:
- A low leakage current PMOS was selected.
- No LDOs or switching regulators were used.
- The MCU operates mostly in STOP power saving mode.
PCB Design & Layout Details
Layer Stackup (2-Layer)
- Top (Signal / Power): MCU, LED and button traces. Power distribution.
- Bottom (Ground / Power): Negative battery contact and ground plane. Power distribution.
PCB panel
A PCB panel was designed to decrease the cost of each PCB.
Programming
The code was written in bare metal CMSIS C using the STM32CubeIDE. To upload the code an ST-LINK V2 has to be connected to the programming contacts on the PCB.
Code structure
State machine transitions
3D modeling and printing
The housing was modeled using Autodesk Fusion. It was printed using a Bambu Lab A1 mini 3D printer.
Parts
378| Qty | Value | Footprint | References |
|---|---|---|---|
| 81 | 100n | Capacitor_SMD:C_0603_1608Metric | C2, C2, C2, C2, C2, C2, C2, C10, C10, C10, C10, C10, C10, C10, C10, C10 +65 |
| 45 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R1, R1, R1, R1, R1, R1, R1, R1, R2, R2, R2, R2, R2, R2, R2 +29 |
| 36 | 1k | Resistor_SMD:R_0603_1608Metric | R6, R6, R6, R6, R6, R6, R6, R6, R6, R7, R7, R7, R7, R7, R7, R7 +20 |
| 36 | Conn_01x01_Pin | TestPoint:TestPoint_Pad_1.0x1.0mm | J1, J1, J1, J1, J1, J1, J1, J1, J1, J2, J2, J2, J2, J2, J2, J2 +20 |
| 36 | SW_Push | My library:SW_Push mini square | SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW2, SW2, SW2, SW2, SW2, SW2, SW2 +20 |
| 27 | 330 | Resistor_SMD:R_0603_1608Metric | R10, R10, R10, R10, R10, R10, R10, R10, R10, R12, R12, R12, R12, R12, R12, R12 +11 |
| 18 | Jumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP1, JP1, JP1, JP1, JP1, JP1, JP1, JP1, JP2, JP2, JP2, JP2, JP2, JP2, JP2 +2 |
| 9 | 1.5k | Resistor_SMD:R_0603_1608Metric | R11, R11, R11, R11, R11, R11, R11, R11, R11 |
| 9 | 10u | Capacitor_SMD:C_0603_1608Metric | C1, C1, C1, C1, C1, C1, C1, C1, C1 |
| 9 | BLUE | LED_SMD:LED_0603_1608Metric | D3, D3, D3, D3, D3, D3, D3, D3, D3 |
| 9 | Battery_Cell | My library:CR2032 slim holder | BT1, BT1, BT1, BT1, BT1, BT1, BT1, BT1, BT1 |
| 9 | GREEN | LED_SMD:LED_0603_1608Metric | D2, D2, D2, D2, D2, D2, D2, D2, D2 |
| 9 | PMOS | Package_TO_SOT_SMD:SOT-23 | Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1 |
| 9 | RED | LED_SMD:LED_0603_1608Metric | D1, D1, D1, D1, D1, D1, D1, D1, D1 |
| 9 | STM32F030C6Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1, U1, U1, U1, U1, U1, U1, U1, U1 |
| 9 | YELLOW | LED_SMD:LED_0603_1608Metric | D4, D4, D4, D4, D4, D4, D4, D4, D4 |
The 360 most common of 378 parts.
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Questions
How big is the Simon pocket panel PCB?
It measures 85.4 × 102.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Simon pocket panel use?
378 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Simon pocket panel KiCad files?
From the JorisBar/Simon_pocket repository on GitHub, at the commit this page was made from: the board is PCB/Panel/Simon_pocket_panel.kicad_pcb and its schematic PCB/Standard/Simon_pocket.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Simon pocket panel design in my own project?
Its repository states no licence, so its author keeps all rights: ask JorisBar before reusing the design.