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- Newsgroups: sci.electronics
- Path: sparky!uunet!cs.utexas.edu!wupost!gumby!destroyer!cs.ubc.ca!fs1.ee.ubc.ca!jmorriso
- From: jmorriso@ee.ubc.ca (John Paul Morrison)
- Subject: Re: IR remote controls info?
- Message-ID: <1992Dec31.064456.23550@ee.ubc.ca>
- Organization: University of BC, Electrical Engineering
- References: <1992Dec30.175645.11441@spang.Camosun.BC.CA>
- Date: Thu, 31 Dec 1992 06:44:56 GMT
- Lines: 40
-
- In article <1992Dec30.175645.11441@spang.Camosun.BC.CA> ua123@freenet.victoria.bc.ca (Matthew A. Skala) writes:
- >
- >
- >I'm an independent student working on a project where I need to have a computer
- >send IR remote control commands to a VCR to start and stop a tape. I'd like
- >it to be able to work with many different VCRs and so I need a way for it to
- >"learn" the command sequence to send and then send it. I know this is possible
- >because those "universal" remotes exist which can record a command sequence and
- >then play it back well enough to fool the VCR. The simplest approach would be
- >to just hook an IR phototransistor and an IR LED to the 'pooter, have it sample
- >the command at a suitable rate, and then play it back out of the LED. Trouble
- >is, I believe some remote controls send their data by modulating a carrier, and
- >so my sampling rate would have to be high enough to capture the carrier
- >frequency. This might be impractical.
- >
- IR devices use a carrier in the 40kHz sort of {range. This isn't hard too
- sample with a microprocessor. For a trainable remote control, look at
- Steve Ciarcia's article in Byte, 1987 (March).
-
- IF you know the exact code, you could program the IR directly.
-
- best bet: get an HP48 calculator, and download the software that lets
- you use it as a learning remote control (option 1) or as remote control
- emulator (option 2; several brands of devices are supported)
-
- >Does anybody have any suggestions? Please reply by EMail and I will post a
- >summary of the responses I get.
- >--
- >CENSORSHIP SUCKS! UP WITH THE PEOPLE!
- >
- >Matthew Skala - VE7MSK - ua123@freenet.victoria.bc.ca
-
-
- --
- __________________________________________________________________________
- John Paul Morrison |
- University of British Columbia, Canada |
- Electrical Engineering | .sig file without a cause
- jmorriso@ee.ubc.ca VE7JPM |
- ________________________________________|_________________________________
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