Digital Slideshow and Clock – Conky / Lua

conkyluaimg1

It is a disgrace really! I have has this running on an ancient laptop for over three years non stop, and not written it up, even failed to write it up on #! Crunchbang forums, where I got all the help from mrpeachy, Sector11, dk75 and others. Time to put that to rights. What is different about this “one”, you ask? Well, we have two conkys running, they are both in the background, so you still have a fully functional PC if you want to use it, you get sexy rounded corners on your image and a nice big digital purple clock.
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Virtualbox Fullscreen Greyed

Every now and then I have a problem after installing a new OS in virtualbox. All goes well until I head for fullscreen (RCTL+F)

It goes fullscreen, it works but the screen is greyed over, to @ half the brightness. Others have reported a black screen.

Solution:

Go in to the Settings > User Interface section of your VM from the Virtualbox main screen

Untick Mini Toolbar and Save

Fullscreen should now work :)

ffmpeg encode for Powerpoint Viewer 2010

You setup a powerpoint presentation on your normal work machine, the encodes you did in mp4 worked just fine in the presentation. Save out to a stick and take it to the machine (an all in one touch screen 65″ with powerpoint viewer only) and all you see is a black screen where your video should be.

Scoured the interweb and tried three different encoding solutions, all of which resulted in a black screen.

I then upgraded the powerpoint viewer on the display machine from 2007 to 2010 (or the latest one I could find on the Microsoft pages). Bingo, the video started working.

Here is the encode I used which worked best, allowing proper full screen video, no black bars, etc.

 

Digital Signage with Google Slides and Chromium in Kiosk Mode

Another solution to digital signage, this time using Google Slides and Chromium (or Chrome) in Kiosk mode.

I am using the base of a linux install (Crunchbang) and Chromium, but the basics transfer across to Chrome and other OS platforms with some tweaking.

Issues:

  • Kiosk Syntax
  • Fullscreen
  • The Google Slides Toolbar or Transport
  • Web Page Presentation
  • Updating the Slides
  • Sharing the Slides
  • Locking Down if keyboard/touchscreen in use

Am grateful for the work done by Mark Pajak at Bristol Museums on setting up Chrome/Chromium in kiosk mode, and to Google Slides users on the google groups forums and good old StackOverflow for other snippets.

As an overview, one needs to publish the google slides presentation, then pull this into an iframe on a web page. Then call chromium in kiosk mode to load that web page. Once the slides are loaded they will not update with new content unless the call to the slides is reset (page reload) so some html/javascript is required to refresh things. This all may seem a little disjointed at first but be patient, i will put it all together at the end with a workflow and example 😉 Continue reading

Fullscreen Browser Slideshow with Clock

I have a penchant for making full screen slideshows with a clock on them

Screenshot-Slideshow

This time around I looked to make one up to run on a slghtly higher specced machine, running a GUI, but in a web browser, using php and javascript. The eventual target was an OS called Webconverger because of its ability to just fire up and present in this way. Continue reading

Webconverger Customisations

I need to write up the top of this post about Webconverger, but have been busy figuring out all the useful options for it. In simple terms, its a locked down bootable kiosk. Very clever, works on 486 and 686-pae machines. Also here so I can browse this whilst booted into webconverger 😉

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Automating Framebuffer Digital Photo Frame

dpf6We have seen in my previous post how I setup the DPF to work against the framebuffer. Now it was time to automate things a bit.

Task List:

  • Autologin on Startup
  • Start gnu screen on Boot
  • Uploading New Images
  • Screen On/Off Timer
  • Reboot Timer
  • Shutdown Timer
  • Unique names/shuffle for file list
  • Cycle Colour Change for Clock ?

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Digital Picture Frame & Clock on the Framebuffer!

dpfBeen wanting to have a go at this for a long time, and finally found some time to sit down and hack my way through it. Everyone else on the web seems to have used X to do this, but encouraged by all the work done on the cli and framebuffer by KMandla I felt this could be done. Now I’ve done all the hard work, I am happy to share it with you!

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Xubuntu – turn Compositor ON and OFF

A little script to add to a launcher or keyboard shortcut to quickly turn the compositor on and off. this is useful if you get screen tearing when playing video

More fun with xrandr

  • NB: double hyphens (with no space between!) are used for all options in xrandr

Sorting out my front screen display for my car pc has proven a bit of a nightmare, given its native resolution of 400 x 234/240. The vga converter I am using doesn’t offer 800×480.

So I looked to xrandr to help me out. The specific options for this are “- -mode”, “- -scale” and “– -pos

With “– -mode” I can set the resolution, in this case 800×600

With “– -pos” I can position the display offset, e.g. – -pos 10×10 would position the display 10pixels down and 10 pixels right. This is useful because the display doesn’t align centrally be default.

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