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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

i want to build a reciver and transponder for my rc car

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What about placing a simple Sensor & a Sense circuit near the end of the track? Instead of placing in the car.

Then the Sense circuit output can feed to a decade or any other counter to count up the Laps.
 
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