Colors Sequence Memory

A simple memory game built on the ESP8266, using 74HC595 and 74HC165 shift registers to control LEDs and read buttons with minimal GPIO usage for them. The game shows a random color sequence on LEDs that the player must repeat using buttons. If the player matches the sequence, the game adds a new random color until reaching a maximum of 10 colors. If the player makes a mistake, the game ends.

🧩 Part of the Shift Register I/O Expansion Series

This project combines what was learned in these earlier repos:

• Part 1: 74HC595 – Output Expansion
• Part 2: 74HC165 – Input Expansion

Now, in Sequence-Memory, we use both together to build an actual interactive game.

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What You'll Learn

• How to use both 74HC595 and 74HC165 simultaneously
• How to create a memory-based color sequence game
• How to use shared clock lines efficiently
• Combining input reading and LED control with minimal GPIOs

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How It Works

• The game starts with a random sequence of 4 colors (Red, Yellow, Green, Blue).
• Colors are represented by specific bits in a byte sent to the 74HC595, lighting up LEDs.
• The player repeats the sequence by pressing corresponding buttons (read via 74HC165).
• If correct, a new random color is added to the sequence.
• The game continues until the player makes a mistake or reaches the max length.

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Hardware Used

• ESP8266 (NodeMCU, Wemos D1 mini, etc.)
• 74HC595 (Output shift register)
• 74HC165 (Input shift register)
• 4 LEDs: Red, Yellow, Green, Blue
• 4 Push buttons
• Buzzer
• Breadboard + jumper wires
• Pull-down resistors (10kΩ)

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Getting Started

1. Clone this repository:

git clone https://github.com/Yamil-Serrano/Colors-Sequence-Memory.git

2. Open src/main.cpp in Arduino IDE or PlatformIO.
3. Wire the circuit following the schematic (coming soon).
4. Upload and play!

Diagram

License

This project is licensed under the MIT License – see the LICENSE file for details.

Contact

If you have any questions or suggestions, feel free to reach out to me:

GitHub: Neowizen