This post presents circuit for blinking LEDs according to rhythm of the music. A microphone picks up sound waves and converts them into an electrical signal. Circuit is based on BC547 transistors which works as signal amplifiers that makes LEDs to blink according to music rhythm.
|1.||Power supply (9V)||1|
|3.||Electret condenser microphone||1|
|7.||100nf ceramic capacitor||1|
The sensitivity of microphone depends on values of R2 resistor and C1 capacitor.
Circuit is designed on a breadboard.