685 TicTacToe
685 : TicTacToe
- Author: Jonathan
- Description: You can play TicTacToe with two players using RGB Leds and buttons
- GitHub repository
- Open in 3D viewer
- View in Wokwi
- Clock: 100 Hz
How it works
This project implements a Tic-Tac-Toe game using multiplexed RGB LEDs. Each of the 9 game fields is displayed using a common-cathode RGB LED. When a player presses a button assigned to a cell, the logic evaluates the current game state and updates only that cell. When a winning combination is detected, the logic evaluates the grid and drives an additional RGB LED to show the winner’s color.
How to test
Wire the circuit according to the Wokwi design (push-buttons, RGB LEDs, connectors). Set the simulation clock to approximately 100 Hz (or faster if preferred). Press any of the 9 buttons to place a move. The LED for that position lights up in the corresponding player color. Continue placing moves alternately. When a player wins, the winner LED displays their color.
External hardware
9× push-buttons, 10× RGB LEDs (common-cathode), resistors
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Button_1 | LED_1_RED | ROW_1_GND |
| 1 | Button_2 | LED_4_RED | ROW_2_GND |
| 2 | Button_3 | LED_7_RED | ROW_3_GND |
| 3 | Button_4 | LED_1_BLUE | Button_9 |
| 4 | Button_5 | LED_4_BLUE | |
| 5 | Button_6 | LED_7_BLUE | |
| 6 | Button_7 | LED_WinnerCheck_RED | |
| 7 | Button_8 | LED_WinnerCheck_BLUE |