Light Chaser Circuit Using Cd4017 And Cd4013

Looking for a fun and easy electronics project? 🤔 A 20 LED chaser circuit Using Cd4017 And Cd4013 is a perfect DIY project for beginners and hobbyists. Instead of the commonly used 555 timer, this project uses CD4017 (decade counter IC) and CD4013 (dual flip-flop IC) to create a smooth light chasing effect ✨.

This LED running light circuit is often seen in decoration lights, signboards, and even in some toys 🎉. By following this simple electronics circuit, you can easily build your own LED chaser at home with just a few components.

Working of 20 LED Chaser Circuit ⚡

• CD4017 👉 works as a divide-by-10 counter
• CD4013 👉 one flip-flop acts as a multivibrator (oscillator) & the other as a divide-by-2 counter

How it Works ⚡

• Output pin 2 of CD4013 connects directly to input pin 14 of CD4017.
• Pin 3 of CD4017 drives pin 11 of CD4013.
• The negative terminals of LEDs L1–L10 go to pin 13 of CD4017, while L11–L20 go to pin 12.
• As the cycle runs, the LEDs light up one after another and create a beautiful running effect 💡.
• The cycle keeps repeating as long as you keep the power on 🔋.

Parts Required 🛠️

Resistors (¼W):

• R1 & R2 = 6.8K Ω
• R3 & R4 = 4.7K Ω

Capacitors:

• C1 & C2 = 100µF (Use smaller values for faster chasing speed ⏩)

Diodes:

• D1 & D2 = 1N4148

ICs:

• U1 = CD4013 (Dual Flip-Flop)
• U2 = CD4017 (Decade Counter)

LEDs:

• L1–L20 (Any color of your choice 🌈)

Power Supply:

• 5V to 12V DC

Others:

Breadboard or General Purpose PCB

Applications of LED Chaser Circuit 💡

• Decorative lighting for parties & festivals 🎇
• Advertising signboards ✨
• Learning project for electronics students 📚
• Toys and hobby circuits 🎮