IR code for Panasonic heatpump?

hmmpic · Joined: 09 Mar 2010 Posts: 314 Location: Denmark

I know its out of topic, but for my project I need the spec for the IR remote.
Any help on this?

Humberto · Posted: Tue Jun 22, 2010 8:13 am

Google is your friend:
http://www.epanorama.net/links/irremote.html#codes
http://www.epanorama.net/multi.php?search=&q=IR

Humberto

hmmpic · Joined: 09 Mar 2010 Posts: 314 Location: Denmark

Thanks but I know google:-)
I'am looking for the newer IR remote for Panasonic Heatpump(inverters)

flemse · Joined: 19 Feb 2008 Posts: 5

Hi

Now I have Logic dump, maybe some one can see something?

The dump is when pressing one key on the remote.

When looking at the smallest pulse it is: 435us, this mean that it start with:
8 Low (pulses) - 3 High (pulses)
From Trigger to marker B is always the same!! It start with 8L then 3H
From Marker B to D is the one there change. It start with 8L then 3H

Some help is needed:-)

Douglas Kennedy · Joined: 07 Sep 2003 Posts: 755 Location: Florida

Well basically they could do pretty much anything with the IR signal but they are constrained by the fact they need to minimize noise (fluorescent lights mainly) so they often use a preamble for AGC then various ways of coding of zeros and ones and then often redundancy ( same code repeated either as is or even in reverse order).

Examples of ways that are often used

long 9ms pulse is sent for AGC followed by a 4 ms space
the bits are code as follows
space coded .... zero and one is encoded by the length of the space
pulse=600us and fixed space varies 0= 600us 1=1500us
pulse coded .... zero and one is encoded by the length of the pulse
shift coded .... zero =short pulse long space one =long pulse short space

hmmpic · Joined: 09 Mar 2010 Posts: 314 Location: Denmark

Thanks for the reply, I looked at the RC6 code and can not get to be an RC6 code.

I now hook a ir-transistor and a normally scope to look at the freq. It is 36Khz!

Then I use a logic analyzer and a IR-module with 36Khz (SFH5110-36) and here are some logic dump.

The IR1 and IR2 is one key press on the remote!
IR1 is send first and is _not_ changing at all, all time the same.
IR2 is the part there change with the key on the remote.

You see a marker "C" on both dump, it is the overlap in the too print!

IR1:

IR2