dopefish.de

Schwarzwald in winter

dopefish — Tue, 09 Mar 2010 17:08:17 +0000

A few weeks ago we were in the Schwarzwald for a few days, and since we got a fair amount of snow while we were there I took some pics. I’ve uploaded my 30 favorite here ….

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Mythtv and IR Blaster

dopefish — Sun, 24 Jan 2010 15:19:45 +0000

We use a set-top-box as the video source for mythtv. And while this works perfectly fine, we have to manually make sure the right channel is set for what mythtv wants to record. This can turn out to being a pain at time, especially when multiple things are planned to be recorded on different channels. So I went and ordered a IR transmitter from irblaster.info to give mythtv the possibility to change channels itself.

Since a bunch of the infos I found online were a bit out dated, here are a few tips for anyone using current versions of the software (I’ve got mythtv-backend 0.22 and lirc 0.8.4a running on a mythbuntu based system when I wrote this)

Hardware is easy to set up, just plug it into a free serial port.
1st we will head over to http://lirc.sourceforge.net/remotes/ and grab the file for our reciever set-top-box if we don’t already have them.
Then go edit /etc/lirc/hardware.conf and add the transmitter settings, these were mine:

TRANSMITTER="Skymaster_XL10"
TRANSMITTER_MODULES="lirc_dev lirc_serial"
TRANSMITTER_DRIVER=""
TRANSMITTER_DEVICE="/dev/lirc1"
TRANSMITTER_LIRCD_CONF="skymaster/XL10"
TRANSMITTER_LIRCD_ARGS=""

now include the reciever settings to /etc/lirc/lircd.conf
I edited my /etc/init.d/lirc to execute the following line before starting the daemon (was needed to ensure the lirc_serial module can be loaded):

/bin/setserial /dev/ttyS0 uart none

Restart lircd and you can then start testing if transmitting codes work with irsend works. here is a little wrapper script I wrote around irsend for mythtv to use. You may have to twiddle around with the sleeps and change the $Remote to your reciever. If the sleeps are too long (-> the script takes to long to finish switching channels), then mythtv will timeout and not display live tv.

#!/bin/bash
 
Remote="Skymaster_XL10"
 
send="irsend -d /dev/lircd1 SEND_ONCE"
 
if [[ "$(echo $1|grep -c "^[0-9]")" = "0" ]]
then # non-numeric command
  $send $Remote $1
else # numeric
  for digit in $(echo $1 | sed -e 's/./& /g'); do
    $send $Remote $digit
    sleep 1.5
  done
fi
sleep 2

If everything is working fine, then go ahead and tell mythtv to use the script to change channels. This is done in the tuner card setup of mythtv-backend (mythtv-setup).

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Snow

dopefish — Sat, 09 Jan 2010 21:08:24 +0000

We went for a walk through the snow and some sledding today, here are the pics i shot ….

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Farmville

dopefish — Wed, 25 Nov 2009 10:52:39 +0000

Farmvill can be a fun way to pass some time, but if your fields get to be a bit big clicking on every single field can get to be a bit tiresome. I found this autohotkey script in the depths of the internet. It simplifies the process greatly

 
!^c::
GoSub GetFarmSq
GoSub Getfirstsq
 
i=1
 
SetMouseDelay, 0
 
cycle := farmy/2
newx=%startx%
newy=%starty%
loop, %cycle%
{
Click %newx%,%newy%
Loop, %farmx%
{
newx+=25
newy-=12
Click %newx%,%newy%
}
newx+=25
newy+=12
Click %newx%,%newy%
Loop, %farmx%
{
newx-=25
newy+=12
Click %newx%,%newy%
}
newx+=25
newy+=12
}
 
return
 
GoSub Getfirstsq
 
GetFarmsq:
Inputbox, farmy, Hi, Enter the number of fields to the right to click on,,200,150,,,,,6
if ErrorLevel
   GoSub Esc
Inputbox, farmx, Hi, Enter the number of fields upwards to click on,,200,150,,,,,6
if ErrorLevel
   GoSub Esc
farmx--
return
 
Getfirstsq:
Msgbox, Click on the leftmost field to start with ("9 O'clock" position).
KeyWait, LButton, D
KeyWait, LButton, D
MouseGetPos, startx, starty
return
 
Esc:
!^x::reload
Return

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bash scripting … switching into directory of the script

dopefish — Mon, 23 Nov 2009 09:13:26 +0000

Sometimes it is useful to switch into the directory of the script e.g. when we need to call or include further files and don’t want to go through the hassle of searching for the script in the file system. Especially when symlinks are involved everything get a bit more interesting. This little snippet switches into the directory of the script, using readlink to dereference symlinks if the script is called via a symlink.

## a small snippet to switch into script directory
SCRIPTDIR=${0}
if [[ -L ${SCRIPTDIR} ]]
then
# dereference the symlink
SCRIPTDIR="$(readlink -e ${0})"
fi
# chop off the scriptname and switch into the directory
cd ${SCRIPTDIR%/*}

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Bash scripting, traps and sleep

dopefish — Fri, 09 Oct 2009 17:01:43 +0000

Today I ran into any old problem: you have a script that should do something when it recieves a signal (e.g. if someone sends it USR1 it should write to a log/syslog), but the script uses a long sleep because it normally only checks/calculates stuff every x min. If you send it a kill -USR1 $pid it will normally execute the trap AFTER the sleep is done, not so great. I figured of the following solution today: put the sleep in a while loop that checks if the full time was slept, and inside the loop a sleep that sleeps the X seconds remaing in the background followed by a wait.

If the script now recieves a USR1 it can kill the wait, execute the trap and will continue the remaining sleep on the next iteration of the loop.

#!/bin/bash 
 
initialize() { 
  set -o nounset 
  trap cleanup INT TERM EXIT 
  trap print_foo USR1 
} 
 
cleanup() { 
  exit 0
} 
 
print_foo() {
  echo "foo"
} 
 
initialize
 
# sleep 1 min
SLEEPTILL=$(date '+%s' --date="+1 min")
 
while [[ $(date '+%s') -lt ${SLEEPTILL} ]]
do
  sleep $(bc <<< "${SLEEPTILL} - $(date '+%s')") &
  BACKGROUND=$!
  wait $BACKGROUND
done

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Cookies …

dopefish — Tue, 29 Sep 2009 20:56:45 +0000

I made some of my cookies this evening and used the opportunity to take some pictures. The lighting wasn’t perfect, so everything has a slight yellow tint. I decided to leave the pictures that way instead of trying to correct the problem in Photoshop.

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Wordpress -> Facebook addon

dopefish — Tue, 29 Sep 2009 17:35:44 +0000

I’m currently trying out the “Status Updater” addon for Wordpress since the latest version supports adding the status as a link to the facebook page … Related posts:Blog Facebook So I finally got around to getting Facebook to automatically... Wordpress, Lightbox & SmoothGallery Since I just spent an hour debugging a problem that... Virtualbox I’ve been playing [...] Related posts:

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Serverdown

dopefish — Mon, 21 Sep 2009 21:34:47 +0000

Server was down for the last 6 hours due to me updating a few stuff that really really didn’t work out too well (grub, xen and kernel at the same time). I gave up and afer a few hours of work managed to revert back to the old configuration so I can recieve mail again till I figure out what went wrong. Server may be down tomorrow a bit too while I try to figure out what exactly broke and try to at least get grub and xen updated.

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Schwetzingen Castle

dopefish — Sun, 20 Sep 2009 13:20:39 +0000

Yesterday we made a short trip to the castle in Schwetzingen, while we were there I took some photos around the castle.

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dopefish.de

Schwarzwald in winter

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Mythtv and IR Blaster

Snow

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Farmville

bash scripting … switching into directory of the script

Bash scripting, traps and sleep

Cookies …

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Wordpress -> Facebook addon

Serverdown

Schwetzingen Castle

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