555 music color light controller circuit

Published:2011/5/22 20:27:00 Author:TaoXi | Keyword: music, color light, controller | From:SeekIC

As the figure 17-52 shows, the controller is composed of the acousto-electric conversion circuit, the amplifier circuit, the clock pulse generator, the counter circuit and the control circuit. It controls the 4 channels of color lights to flash with the music. The pickup microphone changes the music sound into the electric signal, and this signal adds to the 4 channels of analog switch IC3(CD4066). The astable multivibrator is composed of the 555 and RP1，R1，R2，D1，C1. The parameters' oscillation period T is between 0.5～5 seconds. Pin-3's output of the 555 adds to IC2 as the CP pulse. IC2 uses the CMOS type decimal counter/pulse divider CD4017.



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