Memory game

Memory Game Revision - PCB Design

A custom ESP32-based memory game built on a hand-designed PCB.
This is a learning project covering embedded firmware, schematic design, and PCB layout.

PCB prototype sponsored by PCBWay

Project Status

Related Project

This repository is a simplified hardware redesign of the original Delirium Memory Game project.

The original project focused on a more advanced RGB memory game system with expanded gameplay logic and additional hardware features.

This repository focuses specifically on:

• ESP32 hardware prototyping
• KiCad PCB design
• breadboard testing
• PCB manufacturing preparation
• beginner-friendly embedded hardware development

Original project repository:

➡️ https://github.com/siddhipatel911/Delirium-Memory-Game

Hardware Overview

• Microcontroller: ESP32-WROOM-32E dev board (removable via female socket headers)
• Inputs: 3 tactile pushbuttons (GPIO 21, 22, 23)
• Outputs: 3 LEDs with 220Ω current-limiting resistors (GPIO 25, 26, 27)
• PCB: Custom 2-layer board designed in KiCad 10, manufactured by PCBWay
• Power: USB via ESP32 dev board

GPIO Mapping

PCB Design

Designed in KiCad 10.0.0. 2-layer FR4 board, 82.5 × 62.2mm.

• All through-hole components for beginner-friendly hand soldering
• Female socket headers allow the ESP32 dev board to remain removable and reusable
• F.Cu GND copper pour
• 4× M3 mounting holes at corners

Schematic

PCB Layout

3D Render

Breadboard Prototype

Initial hardware validation was done on a breadboard before PCB design.

PCB Before Assembly

Firmware

Current: Hardware Test

Located in memory_game/firmware/hardware_test/

Tests button inputs and LED outputs — each button lights its corresponding LED when pressed.

Planned: Game Logic

The final memory game firmware will be added to memory_game/firmware/game_logic/ after hardware is validated.

Repository Structure

memory-game-pcb/
└── memory_game/
    ├── firmware/
    │   ├── hardware_test/     # Current test firmware
    │   └── game_logic/        # Final game firmware (coming soon)
    ├── hardware/
    │   ├── kicad/             # KiCad schematic and PCB files
    │   └── gerbers/           # Gerber files for manufacturing
    ├── docs/
    │   └── images/            # Project photos and renders
    └── bom/
        └── bom.md             # Bill of materials

Sponsor

PCB prototypes for this project are sponsored by PCBWay.

• PCBWay provides high-quality PCB manufacturing and assembly services for makers, hobbyists, and professionals.
• As part of this sponsorship, I received the prototype PCBs for this project. The opinions below are based on my own experience using their service.

Initial Experience

The ordering process was straightforward and easy to navigate, with clear communication throughout manufacturing and shipping. The boards were manufactured quickly, shipped promptly, and arrived well packaged with no visible damage.

Overall, the experience from placing the order to receiving the finished PCBs was smooth and professional.

Ongoing Evaluation

Assembly and hardware validation are currently in progress. Once testing is complete, I'll update this section with a detailed review covering:

• PCB manufacturing quality
• Solderability and assembly experience
• Dimensional accuracy and finish
• Electrical functionality after assembly
• Overall impressions after real-world testing

Based on my experience so far, PCBWay has provided a reliable and professional manufacturing service, and I appreciate their support of this open-source project.

License

MIT License — see LICENSE for details.