Lap Timer

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AcesFull Power-User Join Date: Oct 2007 Location: Orange County, CA Posts: 109 Good Answers: 1	Lap Timer 01/26/2008 12:06 PM
	I would like to build a lap timer system for my slot car track. I need to come up with the triggering device that will be used register when a car has passed, which will start the timer as well as record lap times. I would rather not use a 2 peice setup, such as emitter and detector LEDs. Possibly magnetic reed switches or maybe some sort of distance measuring device. I also need a way to interface this with a pc and might need to write some sort of software for capturing and displaying the data. Any suggestions?
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Hendrik Guru Join Date: Jan 2007 Location: Centurion, South Africa Posts: 3921 Good Answers: 97	#1 Re: Lap Timer 01/26/2008 12:44 PM
	Try the LED and sensor from a balled mouse. An optical mouse (upside down) might just measure velocity as well. A coil with a magnet passing over it. A limit switch. Old turntables had a nice sensor. __________________ Never do today what you can put of until tomorrow - Student motto
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KENN Associate Join Date: Feb 2007 Posts: 54	#2 Re: Lap Timer 01/26/2008 1:31 PM
	check veeder root
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#3 Re: Lap Timer 01/28/2008 5:14 AM
	These people make a lovely little device called the IRDOT [Infra-Red Detection Of Trains]. Though intended for the UK model railways hobby it must surely have application here? Simply connect the relay output clean contacts to some sort of timer/counter. Usual disclaimer applies. http://www.heathcote-electronics.co.uk/ __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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