Subject:
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IR sensors
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 3 Aug 1999 15:40:26 GMT
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Original-From:
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Jonathan Swaby <jonathan.swaby@vpss&NoMoreSpam&.gatech.edu>
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Viewed:
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989 times
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I have both a miniboard and a Handy board. I have recently purchased some Sharp 40mhz IR detectors to use with these boards. I have very little knowledge of electronics and don't know how to flash the IR LED at a rate that the detectors will need. My understanding is that I can do this at least two different ways. One way would be to use the controller boards to flash the LEDs using software. The other way would be to construct a circuit to flash the LEDs and have the controllers turn them on and off as needed. I would like to do the later. Can anyone point me to an easy to build circuit that wil do the later? I did see a circuit on a web page that used a 74HC04 and a few resistors to do this, but I had a hard time reading the diagram. Any help would be great.
Thanks
<bold><bigger>Jonathan Swaby
</bigger>Computer Services Specialist IV
Student Affairs
404-894-5889
</bold><bold><color><param>0000,0000,8080</param><bigger><bigger>
Georgia</bigger></bigger></color></bold><bigger><bigger><italic><color><param>8080,8080,0000</param>Institute
of</color></italic><bold><color><param>0000,0000,8080</param>Tech</color></bold><italic><color><param>8080,8080,0000</param>nology
</color></italic></bigger></bigger>
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Message has 2 Replies:
 | | New GCC-HC11 Compiler Patch (Aug 3, 1999)
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| Announcing the latest patch to the gcc-2.8.1 compiler to add an HC11 compile target. The latest patches were submitted to me by Dean Huxley. I finished incorporating his fixes and the readme changes this morning at 1am. Changes include Pragma fixes (...) (25 years ago, 3-Aug-99, to lugnet.robotics.handyboard)
| | | Re: IR sensors
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| To blink LEDs at 40khz, you could try using the 555 timer. Radio Shack carries the 555 timer chip, a little booklet explaining how to use it, and any external components you need. In addition to the 555 chip, you'll just need three resistors and a (...) (25 years ago, 4-Aug-99, to lugnet.robotics.handyboard)
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