Comments on: RS232 (Serial) Control of LG LCD TV via MythTV

By: suan

suan — Sun, 04 Sep 2011 03:35:23 +0000

Well said! Here’s the library: https://github.com/suan/libLGTV_serial. It contains some features that you might useful, such as toggling between 2 commands with a single command (togglepower for example), and ignoring commands that get called many times in a row when a single button press is detected as many. Also could you kindly let me know if your TV model is not in the list of supported ones? Thanks!

By: smithj

smithj — Tue, 30 Aug 2011 20:06:47 +0000

Hi Suan,

That would be great. The reason I put this stuff out there is for people to use and improve upon it.

That is why I started this blog, Google and the Open Source community at large has always been very helpful (you can get a long way in this industry just by knowing how to search for something online, and do it quickly). So if I can give anything back then that is what I like to do.

Cheers,

Jon

By: suan

suan — Tue, 30 Aug 2011 14:58:06 +0000

Hi Jon, I’ve expanded on your script and made a Python library out of it. I plan on sticking it up on Github, would you mind? (I’ll credit you and link to this blog post too, of course)

By: tommed

tommed — Wed, 01 Dec 2010 11:25:17 +0000

@Matt Shaw install pyserial

By: hoshy

hoshy — Mon, 04 Oct 2010 10:50:36 +0000

Hi Jon…

Thanks for this nice script, helped me a lot on the way to control my lg 42LD4xx Display…

However i had to modify a few things, some of the codes were different for my tv and although the command list is actually in the manual, its wrong or unusable,
so here are my commands:

aspect169 = “kc 00 02″
aspect43 = “kc 00 01″
poweron = “ka 00 01″
poweroff = “ka 00 00″
inputcable = “xb 00 10″
inputav1 = “xb 00 20″
inputav2 = “xb 00 21″
inputhdmi = “xb 00 90″
inputhdmi = “xb 00 91″

i also added the sending of a carriage return at the end of each command:

ser.write(COMMAND+’r')

instead of just (COMMAND)…

works like a charm… love it!

greetings
hoshy

By: Matt Shaw

Matt Shaw — Tue, 23 Mar 2010 16:33:14 +0000

Hiya

Trying to run this script on my debian knoppmyth box, I get an error something like “python module serial not found”

any idea how I can fix it ???

regards

Matt Shaw
matt@shagshaw.com

By: Jon Smith

Jon Smith — Tue, 29 Dec 2009 00:00:37 +0000

@Colin Is the cable you are using correct. For mine I had to make my own. I dont beleive the TV was using a standard cable. Also if you use a terminal connection rather then the script to connect to the TV do you get any response?

By: Colin

Colin — Sat, 26 Dec 2009 11:51:52 +0000

I have a LG TV you and I have been trying to get the script to work. I noticed that the LG manual I have states that the data should be in hexadecimal, even the TV ID. Is that the case with your documentation?