USB Voice Activated Audio Spectrum Light DIY Kit

The sound level meter kit, also known as the Audio Spectrum Light DIY Kit, is a device that indicates and displays the intensity of sound by lighting up a greater number of light-emitting diodes (leds); such that if you assemble this kit and place it near the speaker ,radio or music sound system, as the intensity and power of the output sound increases, more of the light-emitting diodes or leds in the circuit will light up, creating a beautiful effect and display. with the rising and falling of the sound, the light bar will also light up in sync with the music like a light dance, which in fact makes this circuit a light bar graph. the protective diode against reverse polarity effectively prevents reverse polarity of the power supply from burning out the circuit. additionally, with the internal microphone, there is no need to connect an audio cable, and the sensitivity of the sound can be adjusted with a potentiometer.

Educational note: the led bar graph is essentially an arrangement of leds used for connecting to electronic circuits or microcontrollers and has many applications. this kit is not pre-assembled.

Application of the Dance of Light kit:

1. it can be placed next to a computer, next to a television, bluetooth speakers, or next to a car display.

Specifications of the sound level indicator kit:

1. voltage: DC 5-12 volts
2. sound detection: by microphone
3. sensitivity adjustment: potentiometer adjustment
4. operating current: static: ≤15ma; dynamic ≤120ma
5. power interface: usb to dc3.5
6. flashing mode: lights up from top to bottom depending on the sound level
7. circuit board size: length 160 mm * width 18.5 mm
8. led colors: 14 green, 4 yellow, 2 red