Trigger at distant spot

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Trigger at distant spot

Unread postby roger » Mon Jan 17, 2011 7:05 am

Interested to know how the signals from your photocells were transmitted to the computer?
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Re: Speed trap timer

Unread postby Stopwatch » Mon Jan 17, 2011 11:42 am

roger wrote:Interested to know how the signals from your photocells were transmitted to the computer?

Actually signals are not initiated by photocells. Photocells just "connects" supplied voltage from PC from one pin to another.
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Re: Speed trap timer

Unread postby roger beep » Wed Jan 19, 2011 3:00 am

Understand. Photocell is a switch. If distance is too great for cables I would like to know if anyone has a good system of wireless connection to a computer. I have since found in the forum a post by "aussie phil" dated oct 29 2009 number 898 and would like to try that idea. Anyone else with this? I need to put a sensor on a start line, another on a finish line and both send to a remote computer for the XL results sheet. Anyone tried two starters on the same track at once with an interval of say 1 minute? How would finish line identify each?
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