Re: [CAD_CAM_EDM_DRO] IR proximity detector

A google search for fiber-optic connectors would probably turn up something.

Bill

On Wed Mar 31 09:02:24 2004 Andy Wander wrote:

> I understand everything except the "Y" part-is there an optical fiber "y"
>available? or do you fabricate it?
>
>ANdy
>
>-----Original Message-----
>From: Bill Vance
>To: CAD_CAM_EDM_DRO@yahoogroups.com
>Sent: 3/31/2004 11:00 AM
>Subject: Re: [CAD_CAM_EDM_DRO] IR proximity detector
>
>On Tue Mar 30 22:10:52 2004 Trend wrote:
>
>>I was thinking about adding an IR proximity detector to my cnc router
>((or
>>even an ultrasonic one) (to see how far the vertical axis is away from
>the
>>material.. so both transmiter and receiver is next to each other)
>>Something like:
>>http://www.acroname.com/robotics/parts/R132-IS471F.html
>>Just seems like a fun project.
>>
>>Anyone know what would be the easiest solution? I need something that
>would
>>be easy to wire up.. as I am still getting use to electronics :)
>>
>>thanks!-Lee
>
>You might try the optical fiber, "Y", connector route. Drill the
>tinyest,
>shallow hole you can make in the top of an LED. Insert a piece of viber
>optic
>cable into the hole, with a drop of clear glue on it, and hold it till
>it takes
>a set. Thats the transmitter side. Do the same with a photo
>transister; Thats
>your receiver side. Now whatever length of optical cable you connect to
>the
>bottom of the, "Y", can be routed anywhere you like, and used as both
>transmit
>and receive, simultaneously. Driving the LED with an astable, or PWM
>oscillator will give some control over sensitivity. This was originally
>used as
>the sensor circuit in an audio object detector, with the detector end of
>the
>fiber optic cable mounted on the tip of a blind man's cane.
>
>Bill

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