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.
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.
Pedestrians are not an issue. The start and finish are several kilometres apart so cannot be connected - this is why i want to trigger a watch mounted on the bike as opposed to triggering a unit by the side of the track.
Thanks for your help!
Hi everyone
I am looking to build a device which will start and stop a stopwatch when it is passed. The situation is on a bike track, to automatically start a watch attached to the bike as you begin the track and stop it as you exit, thus giving a consistant lap time.
The device must not...
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