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sound-based-dancing-leds-b962b4-en.md

In this project documentation, I will be explaining you about making Sound reactive 'Dancing' LEDs. This project was inspired by the audio visualizer. This is just for fun, but it can also serve as a sound intensity meter. For this project, we will be needing a Big Sound sensor and 18 LEDs.

To know more about how this works and the setup, please watch the YouTube video posted at the bottom of this page.

Hardware components

  • Arduino Uno/ Arduino Nano
  • Solderless Breadboard
  • Big Sound sensor
  • LED (x18) - generic
  • Male-to-Male Jumper wires (x13)

Setup

Connections

  • Big Sound sensor - A0
  • (+) of Big Sound sensor - 5V
  • (-) of Big Sound sensor - GND (Ground)

LEDs

The cathode of all LEDs were connected to GND (Ground).

  • Row 01 - D3
  • Row 02 - D4
  • Row 03 - D5
  • Row 04 - D6
  • Row 05 - D7
  • Row 06 - D8
  • Row 07 - D9
  • Row 08 - D10
  • Row 09 - D11

Final Look

If anyone has any questions or suggestions about this projects, please comment them below.

EXPANDED TECHNICAL DETAILS

Acoustic Rhythmic Visualization

This project translates ambient sound waves into organic, flowing light patterns, ideal for parties or music-room decor.

  • Analog Signal Filtering: The Arduino samples sound from a High-Sensitivity Microphone module. The firmware uses a "Threshold" algorithm to ignore steady background hums, only reacting to sudden "Beats" or spikes in volume.
  • Dynamic PWM Fading: Instead of simple on/off switching, the pulse intensity is mapped to the loudness of the sound using PWM, creating a "Glow" effect that breathes in sync with the music.

Multicolored Coordination

  • Color Mapping: (Advanced version) The Arduino cycles between Red, Green, and Blue segments of an LED strip based on the frequency (Bass vs. Treble) detected by a simple analog filter.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Sound based 'Dancing' LEDs"
description: "Colorful and musical experience made possible with Arduino"
author: "RucksikaaR"
category: ""
tags:
  - "sound"
  - "lights"
  - "arduino"
  - "music"
  - "led"
views: 7206
likes: 1
price: 699
difficulty: "Intermediate"
components:
  - "1x SparkFun Sound Detector (with Headers)"
  - "1x Arduino UNO"
  - "1x Solderless Breadboard Full Size"
  - "13x Male/Male Jumper Wires"
  - "18x LED (generic)"
tools: []
apps:
  - "1x Arduino IDE"
downloadableFiles: []
documentationLinks: []
passwordHash: "b8d115ef7c0ed076c6a9835e43c4cb6a7a0a15da38897d0db5baae506fe06dca"
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seoDescription: "Build sound-reactive dancing LEDs with Arduino. Experience a colorful blend of light and music in this DIY project."
videoLinks:
  - "https://www.youtube.com/embed/Dr8rCM3oo_E"
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/sound-based-dancing-leds-b962b4_cover.jpg"
lang: "en"