For Making a dancing on/off led we need some passive components.
R1 – 4.7K
R2 – 150K
R3 – 100R
Q1 – BC547
C1 – 5 uf [Note: You can change the led dancing speed by changing the capacitor C1 value.]
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5v battery or dc power sources.
Now, connect all the component as like as the circuit. After all you should give the power sources in your component. You should use 5v dc power source in this circuit. If you can make all things as right way you are success. Now Play your circuit. You can change the number of led. But you should connect all the led as parallel of 1st led.
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