81 LED chaser using double IC 4017
81 LED chaser using double IC 4017 Parts list: IC555 https://goo.gl/R2x7X3 IC4017(2pcs) https://goo.gl/CyAz27 2N3904 or any other NPN(9pcs) (Transistor Kit https://goo.gl/5csLJy ) (Resistor kit https://goo.gl/p4JvQY ) 10k resistor(10pcs) 470 ohm resistor 3.3k resistor LED(81pcs) https://goo.gl/SPCY5o Capacitor 1uF 10v (Capacitor Kit https://goo.gl/6zqbJy ) 100k potentiometer (Potentiometer Kit https://goo.gl/z5b4X1 ) Diode 1N4007 https://goo.gl/AZPAgX 1.5v AA battery(4pcs) Battery holder https://goo.gl/PGfvm9 Prototype Breadboard https://goo.gl/jxEJx5 Please subscribe to my YouTube channel here: https://www.youtube.com/c/EngMousaalkaabi?sub_confirmation=1