🚀 go-pugleaf

In article <3090@utai.UUCP> dudek@utai.UUCP (Gregory Dudek) writes:
>
>    I have a SONY TV at home with a RM-729 remote control.  I was
>wondering if anybody knew the protocol the remote uses to talk
>to the TV.  Are the signals these things send standardized to any

I don't know what protocol Sony uses, but I once wanted to know how
these things worked.  This worked for me, maybe it will work for you:

	1. Get a photodiode from Radio Shack.

	2. Hook it up in series with a battery and a resistor.
	Find the value of the resistor by asking a friendly
	hardware guy.  You are at a university, so there should
	be a friendly hardware guy available.

	3. Borrow an oscilloscope from the hardware guy in step 3.
	Set it up to measure the voltage across the diode.

	4. Point the remote control at the diode and fire away,
	observing the signal on the 'scope.

	5. This worked fine for remote controls that automatically
	repeat.  Howevere, some of mine either did not repeat at
	all, or sent a seperate code that meant the button was still
	down.  For these, replace the oscilloscope with a logic
	analyzer.
-- 
Religion: just say "no"

Tim Smith       USENET: sdcrdcf!ism780c!tim   Compuserve: 72257,3706
                Delphi or GEnie: mnementh