With the launch of the yardstick one I remembered the im-me I bought earlier this year. Not wanting to risk destroying one of the last available im-me's in the world I decided to get pcbs made of Michael Ossmann's gimme .
I found a link to the OSH Park board page an ordered a small batch(3 boards) for less than £10. They came in about 3 weeks and seem to be reasonable quality, I will try them when my goodfet appears this week.
My main laptop is a Lenovo x220 Tablet with an an awesome swivel screen. The screen on the laptop is a touch screen and wacom tablet which uses a pen that hides in the side of the laptop.
I had quite a bit of trouble getting this all setup. Wacom touch and pen devices are supported by webcamd in FreeBSD. I set up webcamd as documented elsewhere on the internet and while I could see webcamd grabbing the input devices the touch screen or pen didn't work at all under X.
Eventually I figured out the problem was xorg not detecting the hid device nodes. To solve this I had to manually create an xorg.conf and the following sections.
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "stylus" "SendCoreEvents"
InputDevice "touch" "SendCoreEvents"
EndSection
...
Section "InputDevice"
Driver "wacom"
Identifier "stylus"
Option "Device" "/dev/input/event0"
Option "Type" "stylus"
Option "USB" "on" # USB ONLY
Option "Mode" "Absolute" # other option: "Absolute"
Option "Vendor" "WACOM"
Option "tilt" "off" # add this if your tablet supports tilt
Option "Threshold" "5" # the official linuxwacom howto advises this line
EndSection
Section "InputDevice"
Driver "wacom"
Identifier "touch"
Option "Device" "/dev/input/event1"
Option "Type" "touch"
Option "USB" "on" # USB ONLY
Option "Mode" "Absolute" # other option: "Absolute"
Option "Vendor" "WACOM"
Option "tilt" "off" # add this if your tablet supports tilt
Option "Threshold" "5" # the official linuxwacom howto advises this line
EndSection
With the now xorg.conf dropped into /etc I could now restart the server and boom, touch screen and tablet working quite well.
When I sniveled the screen I wanted to to be able to rotate my display and input devices to the correct orientation. I wrote a little shell script that can either advance the screen rotation by 90 degrees or set it back to the default orientation.
#!/bin/sh
output=LVDS1
rotation="normal";
stylus="stylus"
touch="touch"
if [ "normal" == "$1" ]; then
rotation="left";
else
rotation=`xrandr --query --verbose | grep $output | awk '{print $5}'`
fi
case $rotation in
normal)
xrandr --output $output --rotation right
xsetwacom --set "$stylus" Rotate cw
xsetwacom --set "$touch" Rotate cw
;;
right)
xrandr --output $output --rotation inverted
xsetwacom --set "$stylus" Rotate half
xsetwacom --set "$touch" Rotate half
;;
inverted)
xrandr --output $output --rotation left
xsetwacom --set "$stylus" Rotate ccw
xsetwacom --set "$touch" Rotate ccw
;;
left)
xrandr --output $output --rotation normal
xsetwacom --set "$stylus" Rotate none
xsetwacom --set "$touch" Rotate none
;;
esac
I bound the script in my .i3/config to the two screen rotation buttons on the fron of the bezzel. I found the keycodes by using xev.
bindcode 198 exec rotate normal
bindcode 204 exec rotate
Overall the touch screen and tablet work quite well. When webcamd starts it doesn't always detect both the touch screen and tablet and sometimes in places them at different event points. If I could figure out a way to make these predictable or if a later xorg detects the input devices correctly then this setup would be perfect.
There are a number of services out there that allow you to take a screenshot and upload it to a website. All of these tools that I have seen(I didn't look, at all) used have involved a proprietary service and uploading your images to someone else's hosting.
That isn't good enough for me, I needed an open tool I could use anywhere (FreeBSD support) with the ability to drop the resulting png into a directory on a webserver I control.
Here is my tool to solve this problem, screenshot. Screenshot can capture either the entire window or offer a picker to grab a certain area. I used import from ImageMagick to handle the capturing and some glue to upload the image. There is another option to open the image with feh if required.
$ screenshot open
$ screenshot upload
$ screenshot pick upload
The script also dumps file names and url into a log file, this makes it easy to track down the last taken screen shots. I have some awk magic to pull out the last url and throw it onto my clipboard.
#!/bin/sh
shotdir=$HOME/screenshots
site="mysite.me"
uploaddir="webdir/screenshots/"
if [ ! -d $shotdir ]; then
mkdir $shotdir
fi
one=`word`
two=`word`
word=$one-$two.png
file=$shotdir/$word
name=`basename $file`
url=$site/screenshots/$name
pick=false
open=false
upload=false
for var in "$@"
do
if [ "$var" = "pick" ]; then
pick=true
continue;
fi
if [ "$var" = "upload" ]; then
upload=true
continue;
fi
if [ "$var" = "open" ]; then
open=true
continue;
fi
file=$var
done
echo "File:" $file
echo $file "http://"$url >> $shotdir/screenshot.log
if $pick; then
import $file;
else
import -window root $file;
fi
if $upload; then
scp $file $site:$uploaddir/$name
fi
if $open; then
feh $file
fi
I use another shell script to generate a random word. This script uses my local system dictionary, /dev/random and some glue to get a random word. The glue uses three bytes read from /dev/random and uses od to format those bytes into something useful. I then use sed to seek to the line in the dictionary to get the word.
#!/bin/sh
words="/usr/share/dict/words"
num=`od -An -N3 -i /dev/random`
line=$(($num % `wc -l < $words`))
word=`sed -n "$line"p $words`
echo -n $word
The final set of videos from BSDCan 2015 have been released.
Planning a radio field day was all it took to ruin a week of perfect weather. Instead of the glorious sunshine and high temperatures of the previous days the North Sea took revenge and summoned an mighty Haar to punish us for our hubris.
We hit the beach with a bbq, food and a couple of radios. Hibby had his new toy, a clansman set including a 5m mast. The mast was light to carry, easy to slot together actually really easy to put up. I think with some practice it could be erected by one person by pegging in the guy lines first.
The bands were relatively quiet considering it was a Friday afternoon, but Hibby and Derecho had a couple of good contacts from across Europe. This radio nonsense was what interested me though, I was more interested in the playing in the dune system.
