LED Chaser Circuit Using 4017 Decade Counter

LED Chaser Circuit Using 4017 Decade Counter | DIY LED Chaser

This is a 10 LED chaser using NE555 timer and 4017 decade counter.You can use upto 15vin this circuit.If you want to use filament lamps or high power LEDs use transistors at the outputs to amplify the current.The output of the circuit as below.

The speed of the LEDs can be changed by using the potentiometer.And it depends on the value of C1 ,R2 and R1 too.Change values to get your desired speed.Higher the value of C1 slower the LED chasing speed.You can reduce the number of outputs by connecting the pin 15 reset of 4017 to a output pin of 4017.For an example let's say you just want 5 outputs then connect the pin 15 to the pin 1.

PCB solder side and Component Side.Print at 300 DPI using a laser printer on a photo paper.Do not change any other settings.
For assistance in making PCBs please visit my article on How To Make PCBs at Home

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