Re: circuit - mode2 problems

[Blars B. <bl...@bl...>]

In article <E18...@f3...> kx...@po... writes:

>I've bulid home brew receiver using TSOP 1738. It works fine when I
> connect it directly to the RS232 port. When I connect it using 7
> meters wire, mode2 is receiving data even when I'm not pressing any
> key on my TV-pilot.

It sounds like the voltage drop over the long cable is causing
problems.  Either substitute a low-dropout regulator for the 78L05, or
use external power.  (To test, you can hook a 9v battery to the input
of the 78L05.)

-- 
Blars Blarson			bl...@bl...
				http://www.blars.org/blars.html
"Text is a way we cheat time." -- Patrick Nielsen Hayden