03-02-2017, 11:34 AM
Here is a simple dance light circuit based on NE555 (IC1) and CD4017 (IC2). The IC1 is wired as an as table multi-vibrator to provide clock pulses for the CD4017. For each clock pulse it receives at the clock input (pin 14) of the CD4040 CI, the outputs Q0 to Q9 (see the pin diagram of CD 4017) are alternately raised one by one. The LEDs connected to these pins shine in the same way to give a dancing effect. The speed of the dancing LEDs depends on the frequency of the clock pulses generated by the IC1.
Circuit diagram with parts list
Notes
1.Mount the circuit on a good quality PCB or common board.
2.The ICs should be mounted on supports.
3.The speed of the dancing LEDs can be adjusted by varying POT R2.
4.The capacitor C1 must be rated 15V.
5.The use of different color LEDs could produce a better visual effect.
CD 4017 Pin configuration
Circuit diagram with parts list
Notes
1.Mount the circuit on a good quality PCB or common board.
2.The ICs should be mounted on supports.
3.The speed of the dancing LEDs can be adjusted by varying POT R2.
4.The capacitor C1 must be rated 15V.
5.The use of different color LEDs could produce a better visual effect.
CD 4017 Pin configuration