ESP32 Piano

This project allows you to create a simple piano using an ESP32 microcontroller and a buzzer. The ESP32 acts as a Wi-Fi hotspot, providing a web interface to play musical notes by clicking on virtual piano keys.

Features

• Wi-Fi Hotspot: The ESP32 creates a Wi-Fi hotspot named "ESP32Piano" with the password "playmusic".
• Web Interface: A responsive web interface that simulates a piano keyboard with 25 keys (C4 to C6).
• Note Playback: Each key plays a specific musical note when clicked.

Components Required

• ESP32 development board
• Buzzer
• Jumper wires (if needed)

Wiring

Connect the buzzer to pin 14 of the ESP32. You can connect the other terminal of the buzzer to the ground.

Code Explanation

The code includes the following key components:

1. Wi-Fi Configuration:

   • The ESP32 is set up to create a Wi-Fi access point with specified SSID and password.

2. Web Server:

   • A web server is initialized on port 80. It serves the piano interface and handles note playback requests.

3. HTML/CSS for Web Interface:

   • The web interface is designed with HTML and CSS, providing visual representation of the piano keys.

4. Tone Generation:

   • The buzzer plays specific frequencies corresponding to the musical notes using the tone() function.

How to Use

1. Upload the code to your ESP32 using the Arduino IDE or PlatformIO.
2. Connect to the Wi-Fi network named "ESP32Piano" with the password "playmusic".
3. Open a web browser and navigate to http://192.168.4.1.
4. Click on the piano keys to play different notes.

License

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

Acknowledgments

• Inspired by various online resources and tutorials on ESP32 and Arduino projects.