LED Voice Control & Lamp Melody Light Module -3v-5.5v
LED Voice Control & Lamp Melody Light Module -3v-5.5v
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Description
Name: Voice-activated LED melody light;
Working voltage: 3-5.5V DC
PCB: FR-4 A grade fiberglass board
Dimensions: 3CM*2.3CM
Circuit function:
After the kit is successfully produced, 5 LEDs will flash in time with the music or d other sounds, and they can be placed near the speaker, allowing the lights to accompany the music for dancing!
The voice-activated LED melody light is mainly composed of a power supply circuit, a microphone amplifying circuit and an LED light-emitting circuit. Power is input through J1, and C1 is filtered for circuit use. MIC1 converts sound signals into electrical signals, which are amplified by C2 coupled to Q1, and the amplified signals are sent to the base of Q2. Q2 drives 5 LEDs to emit light. The louder the sound, the brighter the LED lights.
