Laser Based Speed Sesor Circuit...HELP!

Develonet

Mar 30, 2009
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Mar 30, 2009
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I can pay you for your time on this project, just give me a quote.
I need some help for a speed sensor project I am doing. My plan is to have a laser pointed at a sensor at "Point A" and another laser and sensor at "Point B". The objective is to start a clock mechanism when the beam is interrupted at "Point A", and then stop the clocking when the object passes through the laser at "Point B". I then need this device to calculate the speed (in mph) based on that time and display the number on a LED number display. The distance between "Point A" and "Point B" will be 1 inch. The max speed of the object passing through the lasers is about 150mph. I assumed there would be existing circuits I could buy online but I can not find anything so I am trying to build my own. I have limited electronics experience so if you have a solution, please sketch me a rough schematic and details about the chips a other elements I will need and a price quote for your time. THANKS!!!

 

Hero999

Oct 28, 2007
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Why not use radar?
http://www.ebay.com/itm/Bushnell-Velocity-Speed-Gun-Sports-Radar-Gun-101911-/390773879599?pt=LH_DefaultDomain_0&hash=item5afbf0332f

 

Hero999

Oct 28, 2007
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Develonet said:
Radar will not work in this project I am doing.
Why not? Have you tested it?

What is it you want to measure the speed of?
 

Develonet

Mar 30, 2009
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Mar 30, 2009
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Nevermind...not looking for questions here on why not this or that. Was looking for help with building a circuit. I went and hired someone that could actually do it. Maybe I will post my schematic here when completed.

 

Hero999

Oct 28, 2007
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You've been asked questions because you haven't provided enough information. No one will be able to do what you want regardless of how much money you pay them, unless you provide them with a detailed specification of what you want and are able to answer the appropriate questions.

 
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