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Author Topic: electric eye / infrared switch?  (Read 3505 times)

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jagnogg

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electric eye / infrared switch?
« on: May 28, 2004, 10:10:49 am »

Does anyone know where I can purchase a switch that is triggered by an infrared light beam being broken? Something that I could connect to an IPAC in the same way other microswitches connect.

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JoyMonkey

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Re:electric eye / infrared switch?
« Reply #1 on: May 28, 2004, 10:40:10 am »
Somthing like this?
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JustMichael

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Re:electric eye / infrared switch?
« Reply #2 on: May 28, 2004, 10:48:49 am »
If you mean for detecting coins, you could try here and build one.
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jagnogg

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Re:electric eye / infrared switch?
« Reply #3 on: May 28, 2004, 10:48:56 am »
Quote from: JoyMonkey on May 28, 2004, 10:40:10 am
Somthing like this?

Not exactly. I'm looking for something like what you see on a garage door opener. The switch is triggered when the beam of light is broken. Wave your hand through the beam and it acts just like a button being clicked.
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rsoandrew

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Re:electric eye / infrared switch?
« Reply #4 on: May 28, 2004, 11:16:14 am »
What's the actual application for what you're trying to do? You might get some better suggestions.

Otherwise, most alarm parts work in this manner. You could get a PIR (probably get a used one for free if you talked to an alarm installer) and focus a very narrow beam (just use tape inside the lens). Most of these can function as either a Normally Open or Normally Closed switch and use 7
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