1.3-inch OLED Music Spectrum Display Voice controlled Microphone sounds control spectrum

1.3-inch OLED Music Spectrum Display voice controlled

I. Product Overview
The microphone captures ambient sounds. The MCU's ADC collects the microphone output signal, performs FFT processing, and displays the
spectrum on a 1.3-inch OLED screen.

II. Application Scenarios
Desktop decoration, study environments, etc.

III. Product Features

• Desktop Decoration:
  Displays real-time music frequency pulses on OLED with:

  • 5 spectrum display styles

  • Microphone gain adjustment

  • Dynamic background animations

  • Normal/inverted display modes

  • Settings saved after power-off

  • Intuitive button controls (single/double/triple/quadruple clicks, long press)

• Educational Resource:

  • Code with comprehensive explanatory comments

  • Cleanly formatted code for readability

  • Practical circuit design for low-noise audio acquisition learning

IV. Specifications

• MCU: N32G430

• Spectrum styles: 5

• Refresh rate: 78Hz

• Microphone: 6050 electret condenser

• Sensitivity: -26±3dB

• Audio sampling: 20kHz, 256 points

• Frequency range: 78Hz-10kHz

• Input: 5V via USB Type-C

• Current:Normal mode: <30mA  Inverted mode: <70mA

• SIZE : 4X2.6CM

V. Button Functions

1. Single click: Cycle spectrum styles

2. Double click: Adjust microphone gain

3. Triple click: Toggle background animations

4. Quadruple click: Switch normal/inverted display

5. Long press: Power on/off