Hello mates,
i want to build a system to measure the time of a runner ( in sec. and milisec.) from point A to point B.
My plan is to use 2 infrared transmitters and receivers, connected to a chronometer. When the runner cross point A, the chronometer starts, when the runner crosses the point B, the chronometer stops, and I can get a reading the time in display.
But i dont know how to connect the chronometer and how to start and stop it.I dont know what exactly kind of infrared transmitter and receivers to use too.The max. distance from point A to point B is 100 meters (329 foots)
Can someone to give me ideas or advices.
Thank you very much in an advance!
i want to build a system to measure the time of a runner ( in sec. and milisec.) from point A to point B.
My plan is to use 2 infrared transmitters and receivers, connected to a chronometer. When the runner cross point A, the chronometer starts, when the runner crosses the point B, the chronometer stops, and I can get a reading the time in display.
But i dont know how to connect the chronometer and how to start and stop it.I dont know what exactly kind of infrared transmitter and receivers to use too.The max. distance from point A to point B is 100 meters (329 foots)
Can someone to give me ideas or advices.
Thank you very much in an advance!