IRForum

Hi, I have a portable AC made by LG. The model number is LP0817WSR. The ir remote that came with it has a sticker on the back with the code DG11J1-61. I used the arduino sketch analysir.com provided to read long ir remote control signals for AC's. The size of the raw readings is much larger than I've seen posted anywhere. A single button press gives a raw size of 343. When I process the raw dump to bit form I end up with a 21 byte code. The following is an example of a raw dump followed by what it looks like in binary format. If anyone has any information on this protocol please let me know. Thanks in advance.

Raw: (343) 9121, -4517, 644, -1626, 644, -1633, 642, -544, 602, -544, 605, -549, 603, -553, 603, -553, 605, -1639, 642, -534, 603, -1631, 643, -1633, 642, -545, 603, -577, 574, -549, 576, -581, 606, -542, 575, -1609, 690, -538, 603, -541, 604, -574, 574, -547, 603, -545, 607, -556, 603, -544, 603, -531, 605, -1631, 642, -541, 604, -546, 601, -550, 573, -610, 575, -556, 601, -545, 575, -561, 604, -568, 572, -571, 573, -544, 603, -580, 573, -551, 605, -554, 603, -547, 572, -593, 545, -564, 606, -539, 605, -545, 604, -576, 574, -582, 574, -555, 601, -527, 575, -8024, 643, -528, 605, -536, 606, -540, 604, -545, 577, -577, 602, -553, 604, -1648, 614, -1670, 612, -563, 602, -538, 603, -542, 601, -574, 575, -546, 603, -553, 603, -552, 607, -542, 603, -535, 602, -535, 577, -570, 602, -545, 602, -550, 601, -553, 573, -585, 602, -574, 574, -535, 604, -535, 574, -569, 603, -546, 603, -547, 604, -550, 608, -553, 600, -547, 602, -564, 573, -567, 572, -541, 576, -571, 577, -576, 575, -579, 604, -555, 602, -545, 601, -534, 604, -537, 573, -570, 604, -543, 603, -547, 603, -554, 601, -556, 603, -541, 605, -535, 601, -536, 604, -540, 604, -543, 603, -545, 604, -550, 603, -551, 606, -543, 601, -1625, 642, -1627, 643, -535, 607, -539, 606, -545, 603, -550, 603, -1647, 640, -1617, 612, -8005, 644, -527, 608, -563, 575, -568, 574, -540, 608, -544, 604, -577, 576, -552, 605, -539, 606, -531, 605, -1626, 645, -536, 605, -540, 606, -543, 607, -548, 606, -551, 606, -538, 608, -529, 607, -534, 606, -537, 606, -542, 606, -544, 606, -546, 607, -551, 606, -540, 606, -530, 607, -533, 608, -535, 608, -542, 605, -545, 606, -578, 577, -551, 608, -538, 609, -530, 607, -535, 606, -537, 607, -1635, 645, -1638, 646, -1639, 647, -548, 608, -540, 608, -530, 606, -536, 606, -537, 606, -540, 607, -542, 609, -545, 609, -550, 608, -539, 607, -527, 608, -1628, 645, -536, 608, -1631, 647, -1636, 647, -1639, 646, -549, 609, -522, 604.

1100 0001 0110 0000 1000 0000 0100 0000 0000 0000 0000 0000 0000 0011 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 1100 0011 0000 0000 0100 0000 0000 0000 0000 0000 0001 1100 0000 0000 0101 1100

HI Bill

Based on a sample of 1 signal it appears the checksum is the last byte (9A) using LSB8 format (reverse your byte bit order). The checksum is the sum of all bytes except the last one which is the actual checksum.
I have included an image showing this info.

Using our reverse engineering tool it should be possible to figure out most(all) of the useful field positions.

We identify the signal as Whirlpool. But this can be arbitrary due to all the re-badging in the AC market. So LG is also valid.
(open the image for greater detail if required)

Thanks for the info.

Quick question, does the reverse engineering tool come with the Analysir software? Also does the Analysir software run on Linux?

Bill2k wrote: ↑Mon Aug 05, 2024 4:56 pm Quick question, does the reverse engineering tool come with the Analysir software? Also does the Analysir software run on Linux?

Yes, all features are the same on all editions. The editions only vary by usage. (commercial, non-commercial & Edu)

Bill2k wrote: ↑Mon Aug 05, 2024 4:56 pm Also does the Analysir software run on Linux?

NO, but quite a few users use windows VMs on Linux & mac. You can test it out on your system using the demo from our website.