Introduction
In electronics, LEDs are fun to work with. We can make several projects using those LEDs. By definition, an LED (full light-emitting diode) is a semiconductor device that, when charged with an electric current, generates infrared or visible light. Many electrical types of equipment employ visible LEDs as indicator lamps, vehicles use them as rear window and brake lights, and billboards and signage use them as alphanumeric displays or even full-color posters. But, do you know these LEDs can react to music or, sound? Interesting? So, let us make the Simple Sound Reactive LEDs Circuit.
A music-reactive LED circuit is a basic electrical circuit that responds to altering sound levels, generally from nearby playing music, and reflects the change level of intensity of the sound signal as blinking LEDs.
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Hardware Components
The following components are required to make Sound Reactive LEDs Circuit
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | Resistor | 56 ohms | 6 |
| 2. | Capacitor | 470uf | 2 |
| 3. | Diodes | – | 2 |
| 4. | Zener diode | 4148 | 5 |
| 5. | Speaker | – | 1 |
| 6 | LED’s | – | 6 |
LED Pinout
Sound Reactive LEDs Circuit
Working Explanation
This simple Sound Reactive LEDs Circuit dances to the rhythm if hear sounds or music nearby. The circuit uses Zener diodes for reverse polarity protection. The Zener diode may avoid voltage spikes and safeguard LEDs because when the reverse breakdown voltage is reached, Zener begins to conduct current in the other direction. When the sound is provided near the circuit LEDs turn ON with different intensities, depending on the music. As, a result, it seems like a dancing LED which reacts to music.
Applications and Uses
- The circuit can be employed in concerts, clubs, etc.
- We can use this for wedding festivities.
- Also, one can utilize this in children’s toys.
