how to build an array of led lights that creates the illusion of a light moving on a straight path

I want to create a light that appears to move horizontaly by lighting up little leds one after the other . I wish to be able to control the speed in which the light appears to move
Dov_BAsked:
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dbruntonCommented:
What you are looking for is a LED chaser circuit.

Drop LED chaser circuit into Google and you'll come up with lots of hits.

I've included two of those links below but there are dozens more.

http://www.eleccircuit.com/led-chaser-by-ic-4017-ic-555/

http://www.youtube.com/watch?v=-5Olb9Y_KeM
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Dov_BAuthor Commented:
how much do you think a project like the first lnk might cost the cheapest?
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dbruntonCommented:
Well this one below is probably the cheapest

http://www.amazon.com/NightFire-LED-Sequencer-Kit-Red/dp/B005PFBPP4/ref=sr_1_12/179-5920637-8515005?s=toys-and-games&ie=UTF8&qid=1412544636&sr=1-12

There's this one http://www.eidusa.com/Electronics_Kits_ARROWER_L10_01.htm available in a range of prices.  From everything to just bare board and you purchase the electronics.

As for the two circuits I suggested earlier can't really price those.
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