ESP8266 Buzzer Piano – Play Jingle Bells Using Code
by blinknbuildyt in Circuits > Arduino
147 Views, 1 Favorites, 0 Comments
ESP8266 Buzzer Piano – Play Jingle Bells Using Code
In this project, I show how to create a simple piano-style melody player using an ESP8266 and a buzzer. By controlling timing through code, the board can generate musical notes and play melodies like Jingle Bells.
This is a beginner-friendly project for learning sound generation with microcontrollers.
Supplies
- ESP8266 (NodeMCU)
- Buzzer
- Breadboard
- Jumper wires
- USB cable
Circuit Connections
Connect the components as shown below.
• Connect the buzzer positive terminal to GPIO D1 of the ESP8266
• Connect the buzzer negative terminal to GND
• Power the ESP8266 using a USB cable
All connections are made on a breadboard using jumper wires.
How the Project Works
The ESP8266 generates sound by toggling a GPIO pin at specific intervals.
Each musical note is created by generating a square wave of a particular frequency. By controlling the delay between HIGH and LOW states, different notes are produced.
A sequence of these notes forms a recognizable melody such as Jingle Bells.
Uploading the Code
Open the Arduino IDE and install the ESP8266 board package.
Select NodeMCU / ESP8266 as the board and choose the correct COM port. Upload the provided Arduino sketch to the ESP8266.
Once uploaded, the board starts playing the melody automatically.
Demo and Output
After uploading the code, the buzzer plays the melody through software-controlled timing.
Above is a short demo video showing the ESP8266 buzzer piano in action.
Conclusion
This project shows how music can be generated using simple GPIO control without any external sound modules.
It is a beginner-friendly project that helps understand timing, frequency, and sound generation using microcontrollers.
Possible improvements include adding buttons, multiple songs, or using a speaker for louder output.
If you found this project useful, consider checking out the full video tutorial for deeper understanding.
Video Tutorial
)
A complete step-by-step video tutorial explaining the circuit, code logic, and melody generation is available below.
The video walks through:
• Component connections
• How musical notes are generated using code
• Timing and delay control
• Full melody explanation