Yacht race timer

Capt.Kerry

Hi, not sure if this is strictly a robot but I thought I'd ask anyway. I want to build a button activated timer that counts down the 3 minute start of a yacht race. Every minute a horn sounds and a different colored strobe activates. The whole thing obviously has to be 12v powered and waterproof. I wrote some basic code for a BS2 and used a piezo buzzer and some LEDs to see if it would be accurate enough without using a timer. Now I have to ramp it up and build the real thing. I'm not sure about what relays to use for the horn and lights. Also is there any point in trying to waterproof a readout of some kind to show the countdown in progress? Remote control activation? It needs to be bullet proof. Any suggestions?

Adam Wiesler

If you would like an easy way to control the strobes and buzzers, I would use the Parallax digital I/O board. It has 8 relays (solid state state or mechanical) and 8 inputs for buttons or what ever. I don't know about the case or if you would need a readout, but for wireless, you can use xbees, which are easy, long range, an reliable.

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My website www.quigleyelectronics.com/

Franklin

http://forums.parallax.com/showthread.php?p=914765

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- Stephen

Capt.Kerry

Thanks Stephen, shoulda' looked before i leaped!