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I'm trying to set up either one or preferably two near infra red proximity
detectors. I'm wondering whether the sharp IS1U60L component mounted on the
handy-board is suitable for this type of application.
We managed to make it work recieving codes from a sony remote, but are having
problems using LED's to emit a signal. As far as I know, I have to emit a
short pulse, and then wait until the detector registers a return signal and the
time difference will be proportional to the distance.
Software drivers/locations and hardware details suitable for this application
would be much appreciated.
Thank you in advance,
Andrew Walker
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Message has 4 Replies:
 | | Re: IR proximity detectors
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| Andrew - - Take a look at Dennis' IRPD ... it uses a 12C508, 2 IR LEDs and a Sharp detector ... works great with the HandyBoard and off loads much of the processing to the PIC. If you want to do it with the HB, then do a search on IRPD and you'll (...) (25 years ago, 7-Oct-99, to lugnet.robotics.handyboard)
| | | Re: IR proximity detectors
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| you won't be able to easily) get distance measures with standard IR comms parts (such as the IS1u60). light travels too fast for the time delay betw xmit and rcv to tell you anything. as a proximity sensor, all you get is a yes/no reading. if you (...) (25 years ago, 7-Oct-99, to lugnet.robotics.handyboard)
| | | Re: IR proximity detectors
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| (...) [snip] Andrew, Take a peek at (URL) and bonk on the IRPD project. Getting IR demodulators to work reliably is a bit more tricky that just looking for a bounce. I have done a LOT of work in that area and have found that you really need to take (...) (25 years ago, 7-Oct-99, to lugnet.robotics.handyboard)
| | | More IR proximity detectors
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| We're trying to use the little radio shack IR transmitter and reciever units to build our own. We're not sure exactly how this will work, but before we get too far, is this a reasonable thing to do? Will these be strong enough to use as proximity (...) (25 years ago, 7-Oct-99, to lugnet.robotics.handyboard)
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