81 LED chaser using two 4017 IC

This circuit is an LED Chaser with 81 LEDs using two 4017 ICs and 555 timer
The circuit explained in this video here: https://www.youtube.com/watch?v=JoBsPduHEyc
PCBWay is the sponsor of this project
Website: www.pcbway.com

81 LED chaser using two 4017 IC

Circuit diagram:


81 LED chaser using two 4017 IC



Parts list:

IC 4017(2pcs)
IC 555
5mm LEDs (81 pcs)
1K resistor(9pcs)
10K resitor
3.3K resistor
470R resistor
2N2222 transistor(9pcs)
1uF capacitor
100K potentiometer
1N4007 diode

Video:



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