Introduction: || LM555 || Flashing Railroad Lights

This circuit flashes two red LEDs for a model railway crossing.

I hope enjoing this construction, for more DIY videos please SUBSCRIBE to may youtube channel , Like and Share ... Thanks <3

*****Follow me : *****

Facebook :

Twitter :

YouTube :

Step 1: Construction Materials and Tools

Picture of Construction Materials and Tools

Construction materials :


  • Ra = 68kOhm
  • Rb = 39kOhm
  • RL1, RL2 = 220 - 470Ohm


  • C = 47uF/16V


  • LM555
  • Led1, Led2

Τhe required tools :

  • Breadboard
  • DC PowerSupply+12Volt
  • Some wires

Step 2: Follow the Steps

Picture of Follow the Steps

Follow the steps like in the photos...

Step 3: Follow the Steps.

Picture of Follow the Steps.

Follow the steps like in the photos...

Thanks for watching.. and don't forget to follow me -->


Nc88fan (author)2016-05-04

I made a similar circuit when taking electronic classes and used ir emitters and detectors to trigger the crossing lights from a distance before the crossing and latching them till the train fully cleared the crossing. Made it very realistic. Can't remember the full schematic but maybe you can incorporate it into your design.

About This Instructable




Bio: Hi!! Welcome to my Profile MakeTube where you can see videos with Do It Yourself (DIY) , homemade things and life hacks. I hope you enjoy ... More »
More by YouOnlyL1:Awesome Idea to Make AlarmSecurity ALARM From CocaCola Bottle || DIYDIY || Battery Lighter ||
Add instructable to: