BI-Colour LED Running Lights

Bi Color LED running lights disco lights night rider

Bi colour (two colour) led disco running lights circuit

Five bi-colour LEDs are used in this circuit. These LEDs first light-up from top bottom ingreen colour one by one and then these LEDs light-up from bottom to top in red colour.

Bi-colour led running lights desco night rider 4017 circuit

R1 10kΩ
R2 680Ω
VR1 100kΩ
C1 22µF 16V
C2 0.01µF
D1-D10 1N4001 × 10
L1-L5 Bi Colour LEDs
IC1 NE555
IC2 CD4017

As IC1 provides clock pulses to the input of decade counter IC2, at each clock pulse, IC2 counts from 0 to 9.

The first five pulses reach the green anodes of the bi-colour LEDs and they light in green colour.  The next five pulses reach the red anodes of the LEDs so they light-up in red colour.

BI Colour LEDs

BI Colour LEDs

This process is continued regularly. The glowing rate of LEDs can be controlled with the help of potentiometer (VR1).

Please send your ideas, those are very important for our success…

Tags: ,
10 comments on “BI-Colour LED Running Lights
  1. forex robot says:

    Keep posting stuff like this i really like it.

  2. PERIYASAMY says:


  3. seetharaman says:

    Hi D1 to D10 serves no pupose can be deleted. otherwise the cicuit is novel. If you have included with diodes for both LEDs to get supply at certain steps it would have become amber also.

    • Electronguy says:

      I made this project without the 1N4001 diodes and it works perfectly using 3mm green/red defused LEDs great little project would like to see one for 12 or 20 LEDs.

  4. Andrea says:

    Thank you so much for posting all of the excellent information! Looking forward to seeintg more posts.

  5. Sarah says:

    Informative blog, bookmarked the blog for hopes to see more information!

  6. Yoram says:

    what is the purpose of the regular diodes d1-d10 ?

  7. disco light says:

    disco light

  8. michaelabot says:

    Q1. What if i connected 5 decade counters IC2 to pin3 of IC1 and each decade counters has the exact same circuit which has 10 diodes and 5 bi-colour LEDs?
    Q2. What if i connected 5 bi-colour LEDs in parallel to diodes : D1 – D10?

    Which one will work?

  9. stine achonwa says:

    thanks for accepting me.

Leave a Reply

Your email address will not be published. Required fields are marked *


This site uses Akismet to reduce spam. Learn how your comment data is processed.

Electronic Circuits


Enter your email address: