August 29th, 2014


IRpet is a small set of tools to help examine, and visualize IR streams. It
uses LIRC (specificaly mode2) to get the “raw” input streams

IRpet comes in four pieces:

* irpet – Runs the grabber and the graphing pieces, and creates a HTML report
* irpet-grabber – Script to loop and grab buttons. Can be used to grab
several remotes, and several passes
* irpet-graph – Generate histogram, and a 3d graph of each stream
* irpet-simulator – simulator based on initial button grabs. Basically just
takes the output from previous runs, and outputs random buttons to STDOUT.
Can be used for testing other programs that use mode2 input (like
SurveySays, also from MRL, =)

TODO – irpet-bitstream – take input, and make a bitstream out of it given

Update 11/23/05 — I added a Sourceforge page here, with the actual site here

Downloads, etc

* “Source” irpet-0.2.tgz
* Debian package irpet\_0.2-1\_i386.deb
* RPM package irpet-0.2-1.i386.rpm
* Here’s an example of the HTML output from irpet that includes a histogram, and a 3d graph for each IR stream

Alternatively, you can download the packages directly from the MRL debian security packages apt source. Just put the following in your /etc/apt/sources.list :

deb etch main contrib non-free


- Linux system
Tested on Debain, and Redhat – let me know if you get it working on
other systems (no reason I know of why it wouldn’t work).

- perl
Most likely already on any of the previously mentioned systems.
You might need to install the GD::Graph module. Everything else should
be standard AFAIK

On Debian:
apt-get install libgd-graph3d-perl

Or in general:
perl -MCPAN -e ‘install GD::Graph::bars3d’
(You only need .gif support, so you don’t necessarily have to
build support for all image types (you might get errors if it
doesn’t match what GD was built with)). Note: if you install
this module manually like this, you’ll need to install the rpm
with –nodeps to get it to install.

- LIRC (configured)
This is available from Usually this is the biggest
hurdle to getting it all working. Basically, if you can get the
mode2 binary to give valid output, this should work as well.

- IR Hardware compatible with LIRC


usage: ./irpet -b {num of buttons} [options]
        -d {output directory} default cwd
        -p {number of passes} default 1
        -r {number of remotes} defualt 1
        -V {vertcal resolution of images} defualt 600
        -H {horizontal resolution of images} defualt 800
        -v gives more verbose output
        -h :help

usage: ./irpet-grabber -b {num of buttons} [options]
        -d {base output directory} defualt is current dir
        -p {number of passes} default 1
        -r {number of remotes} defualt 1
        -v gives more verbose output
        -h :help

usage: ./irpet-graph -i {input file} [options]
        -V {vertical resolution of images in pixels} 600 by default
        -H {horizontal resolution of images in pixels} 800 by default
        -p {file prefix} "irpet-" by default
        -w {histogram width} 100 by default
        -r :use this if you want pulses and spaces reversed in the graphs
        -h :help

        example: ./irpet-graph -i remote1button5.mode2.out -v 768 -H 1024 -p mydir/test
        This will produce 3 images with 1024x768 pixels:

usage: ./irpet-simulator {input files} [options]
        -s {seconds of delay between "presses"}
        -b {number of buttons to simulate}
        -h : help

        example: ./irpet-simulator -s 2 -b 4 pass?/remote*button*
        This will take all of the files and randomly spit 4
        of them out on STDOUT with a delay of 2 seconds


Make sure that LIRC is configured properly. If you’re not getting any
results, run mode2 directly, and see if it gives you output when you hit
buttons on the remote. As long as this works, then you should be good. Also,
obviously, make sure you’re in range of the IR transmitter.

If you have any problems, feel free to email me (sith {@},
I’ll try to help you out. Also there is a mailing list for Midnight Research
Labs, check out our site, and feel free to subscribe.

Lastly, let us know what you think, email us, or just leave a comment on the
webpage. Thanks!

Imhotep theme designed by Chris Lin. Proudly powered by Wordpress.
XHTML | CSS | RSS | Comments RSS