Towards the goal of a truly universal IR remote control

[N_Cook]

My parallel-serial IR RC exerciser/function code component enlarger, worked
, in that the waveform on the 1 to 5mS TB DSO looked and timed exactly the
same as the code I was emulating. Unfortunately I had forgotten that the
carrier circa 38KHz in not a square wave. Will have to a dd a couple of
steering dides to the oscillator and try again emulating a known system .
Reason I was not much good at electronics design, I always overlooked at
least one thing

 

[William Sommerwerck]

My parallel-serial IR RC exerciser/function code
component enlarger...

That sounds like a diabolical device invented by Ming and directed at Flash
Gordon!

 

[N_Cook]

William Sommerwerck <grizzledgeezer@comcast.net> wrote in message
news:jrceh9$320$1@dont-email.me...

My parallel-serial IR RC exerciser/function code
component enlarger...

That sounds like a diabolical device invented by Ming and directed at
Flash
Gordon!

What was the Plan 9 from Outer Space interocitor ?

Probably because its a one-off
standard sig gen to provide the basic variable clock frequency, 8x8 DIL
(expandable later on) switches to set up the code , variable monostable to
insert the implied zeros in those DSO-determined codes and basic variablw
mark/space setting for gating variable IR LED pulse oscillator and a
learning remote or 2.
So once a collection of URC tried/ LIRC library/Arduino library etc have
found a route into an unknown/unavailable-remote for a piece of "dead" kit
it would be possible to get the full range of function codes, including
those of normal inadequate URC that do not have the button for the function
that you need.

 

[William Sommerwerck]

What was the "Plan 9 from Outer Space" Interocitor?

The Interocitor first appeared in "This Island Earth", a wonderful "pulp"
film. It was later used in a "Coneheads" TV special, which Britishers would
likely not be familiar with.

"Plan 9" had a language-translation device, the "robo-dictatoor" [sic]. None
of the actors pronounces it the same way.

 

[Paul Hovnanian P.E.]

stratus46@yahoo.com wrote:

[snip]

The problem is the large variety of codes and carrier frequencies
available. There isn't enough room to to store all the variants in a
low power system. I believe the Logitech Harmony is programmed via the
PC so only needs a small amount of memory. I know they're expensive -
that's why I don't have one but many folks swear by them (and a few
swear at them).

The Logitech unit has some interesting features. Like a graphical interface
and the ability to 'macro script' certain functions like turning on the
monitor, set top box and sound system with one button press.


But for a basic remote, I've used something like the Sony RM-VZ220
(available at Radio Shack for $12-$14). They have hundreds of preprogramed
device codes built in. And some oddball equipment can be partially
controlled if you can find the same make and a similar model.

That might get you to a complete solution. If you can get a remote that
operates some of the appliance functions, you can throw a 'scope on the
output and reverse engineer those that work. Once you know the packet
format (preamble, length, checksums, etc.) you might be able to 'fill in
the blanks' by firing some unsupported codes in the same format and see
what happens.

--
Paul Hovnanian mailtoaul@Hovnanian.com
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