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.
you couldn't find someone more qualified
my suggestion is use a 2 way radio then connect a DTMF module to them.
If you can't find someone then yes I will build you a unit.
the easiest circuit (parts location?) is
Model airplan/car/etc transmitters etc might be the easy way to go.
Tried locating DTMF vhips etc but really no luck.
Then it hit me- why reinvent the wheel?
Get a simple 1 or 2 channel RC transmitter receiver then attach a micro switch or ? to the start gate then when the gate opens the transmitter sends a signal to the receiver and BAM you start the stopwatch.
couldn't be simpler.
Look on Ebay for used transmitter/ receiver sets
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