Subject:
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Infrared Optosensors
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 5 Jun 1998 03:47:23 GMT
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Original-From:
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BRIAN-C@TECHNOLOGISTnomorespam.COM
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Viewed:
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1166 times
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I interfaced 3 infrared optosensors to the digital inputs on the handyboard. I'm
a little dissapointed in their performance however. The only time they give a
reading of "true" is if they are about a half an inch or closer from the target.
Any further away than half an inch results in a "false" reading because the
sensors are out of range.
Is there any way at all to have a bigger range. I want to have the sensors 2
inches away from what they are to detect. If anyone has been using the
optosensors I'd like a little input.
-Should I use smaller resistors on the sensors?
-Is the range short because of how fast the digital(); function checks the
sensor? If it took longer to check would it then give the sensor more time to
let the infrared beam to reflect back?
-Do I need stronger optosensors all together?
( I'm using the Quality Tech. 1114, as shown in the HB manual )
Thanks in advance,
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Brian Carvalho [ brian-c@ieee.org ]
DeVRY Institute
New Jersey
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Message has 1 Reply:
 | | Re: Infrared Optosensors
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| 1/2" is actually pretty good range for a basic reflectance sensor. try using them in the analog inputs -- you should get readings that let you read out to about 1". to get better than that, you need a modulated signal, like Pandit has described. (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
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