Re: [CAD_CAM_EDM_DRO] Re: IR proximity detector - Digitizing Probe?

Shouldn't need it. Signal present/signal absent; What more do you need? The
only timing necessary would be on the latch signal, feeding your computer input
circuitry.

Bill

On Wed Mar 31 08:14:25 2004 washcomp wrote:

>If there was a way to detect the time delay, I wonder if this could
>be used for a poor man's digitizing probe?
>
>Jeff
>
>--- In CAD_CAM_EDM_DRO@yahoogroups.com, Bill Vance <ccq@x> wrote:
>> 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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--
********************************************************************************
* *
RKBA! * Blessings on thee, oh Israel!!! * 4-19!
* *
********************************************************************************

An _EFFECTIVE_ | Insured by | All Matter is vibration. | Let he who hath no
weapon in every | by Colt; | --Max Planck | weapon, sell his
hand = Freedom | Dial | In the beginning was the | garment, and buy a
on every side!! | 1-1911-A1 | Word. --The Holy Bible | sword. --Jesus Christ

********************************************************************************

Constitutional Government is dead! LONG LIVE THE CONSTITUTION!!!!!!

********************************************************************************