If I'm not mistaken, remotes work off a series of pulses at a specific frequency and maybe PWM and that varies from model to model and make to make. Also, the receiver is darkened to filter ambient light, BUT, if a brighter visible LED is used at the correct frequency, will the receiver still receive the signal?
I have an Alpine CHM-S601 CD changer and the remote doesn't seem to want to work any more, I can get it function occasionally, but not consistently and Alpine is supposed to be sending me the specs on the output and I hope to be able to build a device using 555 timers to operate the CD changer. If any one has a RUE-4175 remote they want to get rid of, that would be sweet.
Also, on several devices that I have disassembled/torn apart, I found the receiver to be a dark 3 pinned device and I think it is a receiver/transmitter, do modern remotes receive as well as transmit? Does anyone know what a BU3406F chip is?
Headed for google to see what I find.
Thanks