How to Make 81 LED Chaser Using Dual CD4017 IC with NE555 Timer IC | JLCPCB

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Hello Friends! In this blog, I will show you how to make an 81 LED base Led chaser. In this circuit, I am using CD4017 IC & NE555IC.

In this blog, I am going to using a PCB board. This PCB board I was making from http://wwwjlcpcb.com 

JLCPCB is one of the best PCB company in the world. Their PCB quality is highly professional.

Parts Requirements:
1.  LED - 81P
2. BC547 Transistor - 9P
3. 1K Resistor - 9P
4. 330R Resistor -2P
5. 10K Resistor - 1P
6. CD4017IC - 2P
7. NE55IC - 1P
8. 16 Pin IC Base - 2P
9. 8 Pin IC Base - 1P
10. 104(100K) Variable Resistor - 1P
11. 1uf, 50V Capacitor - 1P


Circuit Diagram https://drive.google.com/open?id=1hBioamVAFPN8cqMWxS8s4O9E-qihHSt5 Gerber File https://drive.google.com/open?id=1hRH3RE4MLZTzk5QiBWoIGdpI26pVZkpO