2 layers
Encoder
byrantech/laptop
anyon_e, a highly integrated, high end, open source laptop. Attempt the impossible.
7 parts4.3kMIT
2 layers
Smart tic tac toe
Git-gautham/Smart_tic_tac_toeA two-player Tic-Tac-Toe game built using an ESP8266 NodeMCU board, 5 physical push buttons, and a Wi-Fi-based web interface — no need for external hosting or filesystem upload!
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 7
- Nets
- 30
- Pads
- 50
- Tracks, vias
- 56, 0
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 12 Jun 2025
- Updated
- 12 Jun 2025
Overview
Smart tic tac toe is an open-source printed circuit board by Git-gautham, from the Git-gautham/Smart_tic_tac_toe repository on GitHub. It is a 2-layer board with 7 parts on 30 nets, routed with 56 tracks and 0 vias.
Its parts include 5 switches and 2 connectors.
README
README.mdESP8266 XOX Game (Tic-Tac-Toe)
A two-player Tic-Tac-Toe game built using an ESP8266 NodeMCU board, 5 physical push buttons, and a Wi-Fi-based web interface — no need for external hosting or filesystem upload!
🔧 Features
- 🕹️ Real-time interaction with physical buttons:
UP,LEFT,RIGHT,SELECT, andDOWN(optional)
- 🌐 Access via browser — ESP8266 runs in AP (Access Point) mode
- 🧠 Smart in-browser UI:
- Grid highlighting with cursor
- Tracks turns for
XandO - Win/draw detection
- Scoreboard
- "Next Game" and "Reset Score" buttons
- 🪛 Simple, detachable hardware via header pins
- 🖥️ No LittleFS or SPIFFS required
📷 Screenshot
🖥️ Web Interface
Once powered on:
- Connect to Wi-Fi:
XOX_Game(password:12345678) - Open browser and go to: http://192.168.4.1
🔌 Hardware Setup
| Function | NodeMCU Pin | GPIO | Status |
|---|---|---|---|
| Up | D1 | 5 | ✅ Connected |
| Left | D2 | 4 | ✅ Connected |
| Right | D5 | 14 | ✅ Connected |
| Select | D6 | 12 | ✅ Connected |
| Down | D7 | 13 | ✅ Connected |
ESP8266 Dev Board: NodeMCU v1.0 (ESP-12E module)
Buttons: Tactile push buttons
**Hardware simulation :
!!Down button is not placed due to certain technical difficulties
🛠️ Schematic (KiCad)
The PCB includes:
- Female headers to plug/unplug NodeMCU
- 5 push buttons connected to GPIOs
- All traces on the bottom side
🚀 Getting Started
- Open
src/xox_game.inoin Arduino IDE - Select board:
NodeMCU 1.0 (ESP-12E Module) - Upload the sketch
- Connect power, join Wi-Fi, and play!
🧠 TODO / Improvements
- Add buzzer feedback or LED indicators
- Expand to multiplayer over web (ESP8266 WebSocket)
- Add OLED support
Parts
7| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2, SW3, SW4, SW5 |
| 2 | Conn_01x15_Socket | Connector_PinSocket_2.54mm:PinSocket_1x15_P2.54mm_Vertical | J1, J2 |
Questions
What parts does the Smart tic tac toe use?
7 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 Smart tic tac toe KiCad files?
From the Git-gautham/Smart_tic_tac_toe repository on GitHub, at the commit this page was made from: the board is pcbfiles/Smart_Tic_Tac_Toe.kicad_pcb and its schematic pcbfiles/Smart_Tic_Tac_Toe.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Smart tic tac toe design in my own project?
Its repository states no licence, so its author keeps all rights: ask Git-gautham before reusing the design.
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