photocell array and XNote

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photocell array and XNote

Unread postby MG » Wed Aug 11, 2010 9:49 pm

I would like to construct a small photocell array in series. I would like XNote Stopwatch to start when the beam from the first pair of cells is broken and record splits as each successive beam is broken, stopping after the final beam is broken. Will XNote Stopwatch do this?
MG
 

Re: photocell array and XNote

Unread postby mpegas » Thu Aug 12, 2010 7:45 am

You must connect first and final pair together and connect to start/stop contacts whats you decide. Other pairs connect to snap contacts.
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Re: photocell array and XNote

Unread postby MG » Thu Aug 12, 2010 1:16 pm

Thanks for the reply. Are you aware of a simple interface to which I can connect the photocells to the computer? Sorry for the potentially elementary question, but I am new to all this. I would like to connect everything to a laptop running the XNote software.
MG
 

Re: photocell array and XNote

Unread postby Stopwatch » Thu Aug 19, 2010 8:39 am

MG wrote:Are you aware of a simple interface to which I can connect the photocells to the computer?

The only solution is a USB to COM adapter. viewtopic.php?f=3&t=884
Stopwatch
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Re: photocell array and XNote

Unread postby JanHgm » Thu Aug 19, 2010 11:07 pm

You need to connect your photocells to an Opto coupler to create a switch. That switch is connected to Start/Stop or Snap wires on RS232
(I believe I put some description how to do this on my Camstudio4Xnote site)
This way you can compare your sensors with a regular Red or IR light beamer that I'm using

You want to use the first beamer to start Xnote. (RS232 - Start/Stop, with a huge Skip contact bounce )
Second, Third, etc beam to set a pass time (RS232 - Snap)
Finally, last sensor to stop recording. (RS232 - Start/Stop)
Connect all the cables and connect them to RS232
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Re: photocell array and XNote

Unread postby bjorn36 » Sun May 14, 2017 10:48 pm

JanHgm wrote:You need to connect your photocells to an Opto coupler to create a switch. That switch is connected to Start/Stop or Snap wires on RS232
(I believe I put some description how to do this on my Camstudio4Xnote site)
This way you can compare your sensors with a regular Red or IR light beamer that I'm using

You want to use the first beamer to start Xnote. (RS232 - Start/Stop, with a huge Skip contact bounce )
Second, Third, etc beam to set a pass time (RS232 - Snap)
Finally, last sensor to stop recording. (RS232 - Start/Stop)
Connect all the cables and connect them to RS232




Hi
Do you have a link to this description?
I´m trying to use 3 sensor to start and stop 2 stopwatches but have problems wiring this :(

Thank you
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