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Rockbox mail archiveSubject: Cordless remote hack for a buck or two?Cordless remote hack for a buck or two?
From: J. <jaf60_at_it.canterbury.ac.nz>
Date: Wed, 17 Apr 2002 11:39:53 -0700 Not strictly to do with R/E, but this is probably the best place to bring this up. On the verge of sleep last night, a crazy idea occurred to me that just might not be crazy (but probably is). You can get cheap tiny all-in-one IR photo diodes that have a build in 40khz(?) signal detect and amplification, designed to greatly simplify production of IR remote systems. 3 leads - positive, negative, output. I'm thinking, if you connected one of these to the archos, with the output wired directly to the cord-remote input line (though maybe a $0.50c Schmitt trigger buffer or inverter is needed?), then instead of having to build a PIC-based remote to create the correct 9600baud signal, you could just use an off the shelf programmable IR remote, and have it output the signal - and the photo-diode package will convert the 9600baud IR pulses into electrical signals and operate the archos. Possible problems: 1) From memory, I think standard IR remotes use a 40khz carrier to avoid interference from other IR sources, but maybe it's 40hz (I can't remember) which wouldn't be enough to carry a 9600baud connection. 2) How to program the programmable remote? Don't they normally just copy another remote? You might need to stick an LED in your printer port and write a quick signal generator. 3) It's INSANE! Thoughts? Can this work? Now that I also use my achos as the ehart of my home sound system, a cordless remote that doesn't require the free time needed to build it myself is very tempting... Received on 2002-04-17 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |