Archives for RCMS

Fujitsiu LT C-500 touchscreen in Ubuntu

Just as a small note to anyone trying to get this to work, the fpit driver has a bug in every version of ubuntu up to and including hardy; upgrade to intrepid and you get fully a functional touchscreen again, using this xorg.conf:

Section "InputDevice"
    Identifier     "touchscreen"
    Driver         "fpit"
    Option         "Device"    "/dev/ttyS1"
    Option        "BaudRate"    "9600"
    Option        "MaximumXPosition"    "4096"
    Option        "MaximumYPosition"    "4096"
    Option        "MinimumXPosition"    "0"
    Option        "MinimumYPosition"    "0"
    Option        "Passive"
    Option        "SendCoreEvents"
    Option        "TrackRandR" "true"
EndSection

Just don’t try using KDE4 unless slow-motion work sounds appealing :D XFCE is reasonable though, so Xubuntu is an option (and what I’m running on it right now).

Now, on with the PyQT4 coding…

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Kada2.py output

Ray asked to see what the output of the kada2 script I’ve been working on looks like – only problem is that I’ve been using a real datafile for development, so it has people’s names in it. To avoid any shoutyness, one quick python script to read in the members.kda file and write it back out to test.kda with all the names changed to John Smith; then a quick run with this file as the members.kda file and some imagemagick conversions and viola, the current kada.py output.

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ReportLab

As I mentioned before, after writing a python script to read in Kada’s data files on the rifle club shooters’ scores and calculate new ladders, the next step is output that’s a bit fancier than the straight ASCII text dump:

Novice Air Ladder
- - - - - - - - - - - - - - - -

 1         Joe D'Plumber    45  91.833    94
 2         Joe D'Plumber    36  87.500    91
 3         Joe D'Plumber    18  87.167    92
 4         Joe D'Plumber    16  85.833    91
 5         Joe D'Plumber    26  85.167    92
 6         Joe D'Plumber    31  81.167    87
          Tito D'Builder     2  76.000    76  *
 7         Joe D'Plumber     7  74.000    82
          Tito D'Builder     2  69.000    75  *
          Tito D'Builder     2  67.000    68  *
          Tito D'Builder     2  66.000    70  *
          Tito D'Builder     1  64.000    64  *
 8         Joe D'Plumber    10  63.167    78
          Tito D'Builder     1  62.000    62  *
 9         Joe D'Plumber     4  61.750    76
          Tito D'Builder     2  61.500    72  *
          Tito D'Builder     1  60.000    60  *
          Tito D'Builder     2  55.500    71  *
          Tito D'Builder     2  55.000    58  *
10         Joe D'Plumber     3  53.667    62
          Tito D'Builder     1  52.000    52  *
          Tito D'Builder     1  50.000    50  *
          Tito D'Builder     1  49.000    49  *

This does the basic job that the original system did (actually, it does a bit more – the asterisks mark out those shooters who haven’t yet shot enough cards to get on the ladder, but they’re still listed as an incentive for them to shoot more cards – the current system doesn’t do this). It’s not really doing all that can be done, however, and it’s certainly not all that fancy-looking. Especially in a scripting language, where the whole point is to do fancy stuff quickly through toolkits. So, … Read the rest

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New Toy!

Bought for the RCMS project, it’s a hand-held tablet PC (seen here in its docking station). Celeron processor and 256Mb of RAM and a whopping 60Gb hard disk space. Back when we got one for the CVRG robotics lab in 2002, it was the best thing available and cost thousands – today it cost me just over €160 by the time it landed on my door, with customs and vat and whatnot.

The plan is, get the touchscreen working (the fpit driver works but it’s not calibrating properly), and using python, the QT4 library, QT Designer and pyqt, to build a program that could replace the venerable RO Report form used in the rifle club:

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Python

One of the downsides of working on a pre-startup project is that you really can’t say much about it. Seriously. You think Cryptonomicon seemed paranoid about security? You’ve just never met the folks who safeguard possible IP for college spin-outs. Yowza. And it’s a shame because some of this stuff is really rather nifty, and it’s been good to not only do some high-level design of low-level stuff, but also to get back to implementing in C and for high-capacity stuff as well.

However, side projects are totally fair game :D

At the moment, most of my side-project time has gone into a quick script for the rifle club in college. It has to read in a text file and do some basic statistics on the data therein. PHP would blaze through this in a web setting, but to my mind, PHP is out of its depth when not running on a webserver so I thought something else would be more appropriate. Perl is certainly up to the task, as is Ruby and I’ve been wanting to learn Ruby for a while, but some upcoming PhD stuff requires me to know Python, so I figured this would be a good starting point for it, so apt-get install python and away I went. 

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