The louder the sound, the more the LED will light up from bottom to top. As the sound fluctuates, the LED will flashing with the music.
The louder the sound, the more the LED will light up from bottom to top. As the sound fluctuates, the LED will flashing with the music.
DC voltage between 5V and 12V can be powered, with reverse connection protection.
Using an independent comparator circuit, although the circuit is slightly more complicated, the structure and principle are easier to understand.
Equipped with anti‑reverse connection protection diode, which can effectively prevent the circuit from being burnt due to the reverse polarity of the power supply.
The VU meter is a voice‑activated sensor, so there is no need to connect audio, just power on the product, it will flash when there is a sound.
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