Fun with Xrandr

2018-03-02 fash Leave a comment

xrandr is an official configuration utility to the RandR (Resize and Rotate) X Window System extension. It can be used to set the size, orientation or reflection of the outputs for a screen.

Someone broke my screen at a hackers event. The terminal was really hard to read with the black parts, so i tilted the screen

Quiet friday at work, playing with my little trusty 2530p.
I’m using xmonad, so i don’t need any fancy work laptop.

Another quiet friday at work, working from home, i turned all monitoring displays upside-down, sideways, or rotated them every so much seconds.

While this is a lot of fun to use, i used this to get my monitorsetups exactly the way i wanted, at home or at work.
Different screen sizes, height differences .. no problem.

A fun tool to use is:
https://github.com/qurn/xrandr-keystone-helper

Some scripts:

# VGA off
xrandr --output VGA1 --off

# examples
xrandr --output LVDS1 --mode 1280x800 --output VGA1 --mode 1280x1024 --pos 0x1280 --left-of LVDS1
xrandr --output LVDS-1 --mode 1280x800 --output SVIDEO-1 --mode 1920x1080 --pos 0x0 --left-of SVIDEO-1
xrandr --output LVDS-1 --mode 1280x800 --pos 0x1920 --output VGA-1 --mode 1920x1080 --pos 0x2200 --right-of LVDS-1 --output DVI-I-1-1 --mode 1920x1080 --pos 0x0 --left-of LVDS-1

# zoomthingy
xrandr --output VGA1 --mode 1920x1080 --panning 1920x1080
xrandr --output VGA1 --mode 640x480 --panning 1920x1080+2910+0 --scale 1x1

# fix detection
xrandr --setprovideroutputsource 1 0

# add mode
xrandr --addmode DP-1 1440x720

# transform (see also terminal picture above)
xrandr --output LVDS --mode 1366x768 --panning 1166x768 --transform 1,0,-200,0,1,0,0,0,1

# Funky stuff
for f in `seq 1 9` ;do echo xrandr --output LVDS1 --transform 0.5403,-0.8$(echo -n $f)41,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do echo xrandr --output LVDS1 --transform 0.5403,-0.8$f41,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.1$(echo -n $f)5403,-0.8$(echo -n $f)41,0,0.841,0.5403,0,0,0,1.5 ; sleep 2; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.4$(echo -n $f)5403,-0.8$(echo -n $f)41,0,0.5$(echo -n $f)841,0.5403,0,0,0,1.5 ; sleep 1; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.4$(echo -n $f)5403,-0.8$(echo -n $f)41,0,0.5$(echo -n $f)841,0.5$(echo -n $f)403,0,0,0,1.5 ; sleep 1; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.4$(echo -n $f)5403,-0.8$(echo -n $f)41,0,0.$(echo -n $f)841,0.5403,0,0,0,1.5 ; sleep 2; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.5403,-0.8$(echo -n $f)41,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.5403,-0.8$f41,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.5$(echo -n $f)403,-0.8$(echo -n $f)41,0,0.8$(echo -n $f)41,0.5$(echo -n $f)403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.5$f403,-0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.5$f403,-0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1; done
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.$(echo -n $f)5403,-0.8$(echo -n $f)41,0,0.841,0.5403,0,0,0,1.5 ; sleep 2; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
for f in `seq 1 9` ;do xrandr --output LVDS1 --transform 0.$f403,-0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5; done ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.1,0.1,0,0.1,1,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform -0.11038,0.993888,0,-0.99388,-0.11038,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform -0.11,0.99,0,-0.99,-0.11,0,0,0,1
xrandr --output LVDS1 --transform 0.15425,0.988,0,-0.988,0.15425,0,0,0,1
xrandr --output LVDS1 --transform 0.2,-0.2,0,0.2,0.2,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5,-0.5,0,0.5,0.5,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5,0.5,0,0.5,1,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.54030,-0.841,0.841,0.54030,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.54030,-0.841,0.841,0.5403,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,0.1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,1.1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0.1,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform -0.5403,-0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,-0.841,0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,-0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,0.841,0,0.841,0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,1 --scale 2x2; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0,0,2 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0,0.1,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0,0.841,0.5403,0.1,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0.1,0.841,0.5403,0,0,0,1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0.1,0.841,0.5403,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.5403,-0.841,0.841,0.5403,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.1,30,0.1,0.9,-80,0,0,0.8 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.9,0,0.9,0.9,0,0,0,1 --scale 1.1x1.1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.9,0,0.9,0.9,0,0,0,1 --scale 1.5x1.5 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.9,0,0.9,0.9,0,0,0,1 --scale 2x2 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.9,0,0.9,0.9,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 0.9,-0.9,-0.1,30,0.1,0.9,-80,0,0,0.8 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 1.1,1.1,0,1.1,1,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1
xrandr --output LVDS1 --transform 2.1,2.1,0,2.1,1,0,0,0,1 ; sleep 5 ; xrandr --output LVDS1 --transform 0,0.10,-124,0,1.24,0,0,0.000316,1 --scale 1x1

Photography

Working on 8mm film projectors

2018-02-17 fash

I’ve got some old 8mm film from my father. And i wanted to digitise them.
Luckily he had some projectors. One was his own and a borrowed one.
Don’t know about the third one.

Not being used for 30+ years, none of them worked.

So i took them apart and tried to fix them.

Most of them had a driving belt issue, and two of them needed a new bulb.

In the end I had three working projectors. Let the digitising begin!

I started off with putting a Nikon camera beside it and selecting 24 frames/second and putting the speed dial just right .. i got a decent recording.

Tips:

Most drive belts still can be bought, sometimes you have to search for an alternative with same dimensions.

Measure the resistance of the power connector. The old transformers could have a shorted connection. (cause: dried out insulation of copper wires)

Use a pressurized can of air to clean the insides.

Keep track of the parts when disassembling. Those things are not made to be easy fixed.

Below a uncut/unaltered recording, so the media needs some cropping!
I love the authentic shutter sound!

Computer

Old computer : Comx-35

2018-02-09 fash

Trying to fix a computer from my computer collection.

RCA 1802 CPU @ 2.8 Mhz
32K Memory

Apparenty something wrong with the graphics chip.

The COMX uses the RCA CDP1869 and CDP1870 Video Interface System (VIS), consisting of the CDP1869 address and sound generator and the CDP1870 colour video generator.

Maybe next to try : checking signals using a Logic Analyzer

Art, Hobby

Special effects makeup with Coline

2018-01-20 fash

Movies

Looking for the building in Revenge of the Ninja

2018-01-18 fash Leave a comment

When I was young I studied several Martial Arts.
Ninjutsu was one of them.

( Monique had a workshop from Masaaki “okay lets play” Hatsumi )

Ninjutsu (忍術), sometimes used interchangeably with the modern term ninpō (忍法), is the martial art strategy and tactics practised by the ninja.

I alway liked the movie “Revenge of the Ninja”.
I like Sho Kosugi
More info: https://www.youtube.com/watch?v=SclkTYTawmI

Well .. didn´t want to go to bed. Lets try to find the building where they are fighting on the roof.

Found it!

Music, Pipes / Folk / Instruments

Sun in the stream on my Uilleann Pipes

2017-12-30 fash

Irmgard told me a week ago she liked “Sun in the stream” by Enya.
I found a midi file a while ago, which i edited to get the accompaniment part only, without the melody line.

I played this after 4 times practicing, and learning to use some extra keys on the chanter while doing so.

I played the midi file on my Yamaha QY-100 sequencer.

Holes and keys on a Uilleann Pipe Chanter

Merry xmas and a happy 2018

Hobby

Making some steampunk lighting

2017-11-23 fash Leave a comment

Some new lights in our livingroom.

A while ago, I made a wooden shelf thingy behind our couch.
Inserted some electrical outlets and some network ports (utp outlets)
Put a load of little pebbles on top. But it needed some light.

Get some copper tubing, a pressure gauge, tap, bends and some electrical wiring.