This circuit is based on two commonly used IC that is NE555 timer and CD4017 IC with few more components. 555 timer IC wired as an monostable oscillator. In this circuit NE555 monostable generates a clock for the circuit, which provide a oscillating wave to the output pin 3 of IC1.  Monostable or one short multivibrator has only one stable state and we have to trigger it externally to return it back to its original state. CD4017 is a CMOS counter/ divider IC . It take clock signal from the clock input and turn on the 10 output in sequence, each time when it receives clock input pulses. It is the most popular IC and extremely useful in various project like Light Chaser, Matrix Die. In order to understand the working of IC one must know about its individual pin.

In this circuit when you clap or whistle in front of a Mic, a flower connected in the output starts rotating. For making this circuit, we have used CD4013 IC, DC [[wysiwyg_imageupload::]]motor and few more components. IC CD4013 contains two independent D type flip flop which exist in one of two states and can store information. Each module is further equipped with a group of  pin outs assigned as data, set, reset, clock input and a couple of complementary outputs Q and . As we know, it has couple of output that change or toggle state as response to trigger applied to input terminals.  To put in simple words, this circuit describes movement of a DC motor based on the voice sensing capabilities provided to it through a microphone. The DC motor can be accessorized using a variety of attachments such a miniature flower (in this case), a small fan etc. 

This circuit is based on two commonly used IC that is NE555 timer and CD4017 IC with few more components. 555 timer IC wired as an monostable oscillator. In this circuit NE555 monostable generates a clock for the circuit, which provide a oscillating wave to the output pin 3 of IC1.  Monostable or one short multivibrator has only one stable state and we have to trigger it externally to return it back to its original state. CD4017 is a CMOS counter/ divider IC . It take clock signal from the clock input and turn on the 10 output in sequence, each time when it receives clock input pulses. It is the most popular IC and extremely useful in various project like Light Chaser, Matrix Die. In order to understand the working of IC one must know about its individual pin.