Dancing LED's circuit


Posted on May 6, 2012

Here is a simple circuit which can be used for decoration purposes or as an indicator. Flashing or dancing speed of LEDs can be adjusted and various dancing patterns of lights can be formed. The circuit consists of two astable multivibrators. One multivibrator is formed by transistors T1 and T2 while the other astable multivibrator is formed by T3 and T4. Duty cycle of each multivibrator can be varied by changing RC time constant. This can be done through potentiometers VR1 and VR2 to produce different dancing pattern of LEDs.


Dancing LED's circuit
Click here to download the full size of the above Circuit.

Total cost of this circuit is of the order of Rs 30 only. Potentiometers can be replaced by light dependent resistors so that dancing of LEDs will depend upon the surrounding light intensity. The colour LEDs may be arranged as shown in the Figure.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Injector-tracer
    Simple FM transmitter
    Magnetic-phono-preamplifier
    cut the feed forward in the miller compensation with voltage buffer
    Straight and Cross Cable LAN
    led lighting for 6v vehicles
    LA3361 PLL FM Multiplex Stereo Demodulator
    Portable Microphone Preamplifier
    Centrifugal fish autofeeder
    Induction Balance Gold Metal Detector Circuit



    Top