athomas21 (author)2011-09-23

can i use a 7-segment display to show the time remaining for the signal to change??....if yes then how??

robot1398 (author)athomas212011-10-12

are u willing to use a microcontroller or not?

MROHM (author)robot13982012-02-12

You can do it with a 7447 and a 7490(TTL gates and not a microcontroller) THERE ARE SITES WITH SCHEMATICS TO DO THIS!!!

athomas21 (author)robot13982011-10-14

no not a microcontroller.....

techxpert (author)2011-09-26

year this is a great circuit also posted at
thanks for making an instructable about it as it was hard to read

pbergeronronronron (author)2011-06-09

yellow should always be before red light

u r correct but now i have to redesign the circuit

optox (author)robot13982011-07-23

justswitch the red and green LEDs

robot1398 (author)optox2011-07-23


amalviya1 (author)2011-07-22

it's purpose is to get ready! the way nice project rohit!..

robot1398 (author)amalviya12011-07-22


ray_Bond (author)2011-06-15

very good work bro
you keep it simple and with less use of components
this is really good.
God Bless You

robot1398 (author)ray_Bond2011-06-15


LinemenOwn (author)2011-06-10

What is the purpose of the yellow light in India then?

About This Instructable




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