https://github.com/veerajkute/automatic-guitar-tuner
An automatic guitar tuner built using an Arduino microcontroller. This project leverages a microphone to capture the sound of a guitar string and uses a Fast Fourier Transform (FFT) algorithm to detect the frequency. The Arduino then controls a servo motor to adjust the tuning peg until the string reaches the desired pitch.
https://github.com/veerajkute/automatic-guitar-tuner
arduino fastfour fft microcontroller music signal-processing stepper-motor
Last synced: 3 months ago
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An automatic guitar tuner built using an Arduino microcontroller. This project leverages a microphone to capture the sound of a guitar string and uses a Fast Fourier Transform (FFT) algorithm to detect the frequency. The Arduino then controls a servo motor to adjust the tuning peg until the string reaches the desired pitch.
- Host: GitHub
- URL: https://github.com/veerajkute/automatic-guitar-tuner
- Owner: VeerajKute
- Created: 2024-08-20T16:01:55.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2024-08-20T16:05:45.000Z (almost 2 years ago)
- Last Synced: 2025-03-04T12:51:20.044Z (over 1 year ago)
- Topics: arduino, fastfour, fft, microcontroller, music, signal-processing, stepper-motor
- Language: C++
- Homepage:
- Size: 5.86 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Automated Guitar Tuner
This project is an Arduino-based automated guitar tuner that uses a stepper motor to adjust the tuning of guitar strings by analyzing their frequencies. The tuner captures the sound of a guitar string, performs a Fast Fourier Transform (FFT) to find the dominant frequency, and then adjusts the tuning peg using a stepper motor to match the desired frequency.
## Features
- *Automated Tuning*: Tunes all six strings of a standard guitar.
- *Frequency Analysis*: Uses the arduinoFFT library for accurate frequency detection.
- *Stepper Motor Control*: Utilizes the AccelStepper library for precise motor control.
## Hardware Required
- *Arduino Board*: An Arduino Uno or compatible microcontroller.
- *Stepper Motor*: A 4-wire stepper motor.
- *Stepper Motor Driver*: A driver board for controlling the stepper motor.
- *Microphone/Sensor*: A microphone or piezoelectric sensor to capture the sound.
- *Breadboard and Jumper Wires*: For connecting the components.
- *Resistors*: As required for the microphone/sensor circuit.
## Software Requirements
- *Arduino IDE*: [Download Arduino IDE](https://www.arduino.cc/en/software).
- *arduinoFFT Library*: Install via Arduino Library Manager.
- *AccelStepper Library*: Install via Arduino Library Manager.
## Installation
1. *Clone the Repository*:
```bash
https://github.com/VeerajKute/Automatic-Guitar-Tuner.git
cd Automated-Guitar-Tuner
2. Open the Project in Arduino IDE:
• Open the guitar_tuner.ino file in the Arduino IDE.
3. Connect the Arduino:
• Connect your Arduino board to your computer using a USB cable.
4. Upload the Code:
• Select the correct board and port in the Arduino IDE.
• Click the Upload button to upload the code to your Arduino.
## How It Works
1. Start the Tuner:
• Open the serial monitor in the Arduino IDE.
• The tuner will prompt you to select a guitar string to tune by entering a number (0-5):
- 0: 6th String (E2)
- 1: 5th String (A2)
- 2: 4th String (D3)
- 3: 3rd String (G3)
- 4: 2nd String (B3)
- 5: 1st String (E4)
2. Recording Audio:
• The tuner records audio for a few seconds to capture the frequency of the selected string.
• The arduinoFFT library is used to perform a Fast Fourier Transform (FFT) on the recorded samples to find the dominant frequency.
3. Tuning the String:
• The detected frequency is compared to the target frequency for the selected string.
• The difference between the detected and target frequencies is calculated.
• The stepper motor is then adjusted to correct the tuning by rotating the tuning peg.
4. Repeat for Other Strings:
• Repeat the process for each string until the guitar is fully tuned.
## Example Output
Sample output from the serial monitor:
Select a string to tune (0-5):
0: 6th String (E2)
1: 5th String (A2)
2: 4th String (D3)
3: 3rd String (G3)
4: 2nd String (B3)
5: 1st String (E4)
Selected String: 2
Recording audio for 1 second.
Recording complete.
Measured Frequency (Hz): 146.50
Target Frequency (Hz): 146.83
Adjustment Steps: 2
## Contributing
Contributions are welcome! Feel free to submit a pull request or open an issue if you have suggestions for improvements or if you find any bugs.