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Ubuntu AMD no overscan / underscan fix

Ubuntu AMD no overscan / underscan fix
I have a monitor with a bunch of dead pixels at the left hand side and the bottom affecting maybe 5% of the screen. Rather than throw the monitor away I usually change the underscan so I can skip the dead pixels. Ubuntu 16.04 decided that it would no longer play nice with the official AMD drivers for my graphics... Read More

Particle core/photon/electron function post data using curl or wget

Particle core/photon/electron function post data using curl or wget
This is a quick howto on using curl, wget or any other web based method to pass data to a Particle (formerly Spark) Core, Photon or Electron. Prerequisites: working Particle device as listed above software on the device waiting for user passed data The device’s access token A simple code example which exports a function is below. int ledPin =... Read More

Today I did a clean install of Ubuntu 16.04.1 LTS 64 bit and upgraded my site

Today I did a clean install of Ubuntu 16.04.1 LTS 64 bit and upgraded my site
Over the past couple of days my site has been offline as I have been optimising it. I have installed: Ubuntu 16.04.1 LTS 64 bit MariaDB rather than Mysql database server Nginx web server The site definitely feels more responsive to me but that is purely subjective. I have tried doing speed tests but they vary even between page refreshes.... Read More

Adding auto bed levelling to Prusa i3 on Sanguinololu v1.3 (Marlin firmware)

Adding auto bed levelling to Prusa i3 on Sanguinololu v1.3 (Marlin firmware)
This is a diff file of my changes required in the latest Marlin firmware to enable auto bed levelling on the Prusa i3 using a Sanguinololu v1.2+ board. You would need to change some of the figures depending on your own requirements and servo positions etc. diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h index edbeb44..45812fc 100644 --- a/Marlin/Configuration.h +++ b/Marlin/Configuration.h @@ -105,16 +106,17... Read More

ATI R9 270x (and R9 295X2,R9 290X,R9 290,R9 285,R9 280X,R9 280,R9 270X,R9 270) enable audio over dvi connection

ATI R9 270x (and R9 295X2,R9 290X,R9 290,R9 285,R9 280X,R9 280,R9 270X,R9 270) enable audio over dvi connection
As standard you do not get audio over the DVI port on R9 devices. I got audio working correctly over DVI using an old DVI to HDMI converter that shipped with one of my previous ATI graphics cards, the HD4850x2. They are still floating around on ebay, and look like this: Just use a standard HDMI lead to your monitor... Read More

So.. my quadcopter disappeared from view, and my life.

So.. my quadcopter disappeared from view, and my life.
For quite some time I have been considering getting into the world of (or should that be the air of?) remote control flying machines such as quadcopters and the bigger brothers hexacopters and octocopters. Recently while enjoying a nice day out shopping with my wife (we’ve all been there haven’t we) and I saw a shop that appealed to all my... Read More

Lissajous Patterns on an Oscilloscope using Silego GreenPAK4 Development Kit and SLG46620V

Lissajous Patterns on an Oscilloscope using Silego GreenPAK4 Development Kit and SLG46620V
Introduction What are Lissajous Patterns? Lissajous Patterns are the result of two sine waves controlling the X and Y axes of an oscilloscope. Lots of science fiction movies will show Lissajous Patterns on oscilloscopes as it is a very impressive thing to display. https://en.wikipedia.org/wiki/Lissajous_curve What is an Oscilloscope? An oscilloscope is an electronic device used for viewing waveforms or electronic... Read More

Pixels Movie Collectable Pixels Cup (cinema promotion) teardown and conversion to MAME arcade emulator

Pixels Movie Collectable Pixels Cup (cinema promotion) teardown and conversion to MAME arcade emulator
Yesterday I visited the cinema with my children (not to see Pixels oddly enough!). In the foyer there was a section of the popcorn stand dedicated to the Pixels movie and selling tie in merchandise. One of the items was a popcorn and drink combo in a collectable cup shaped like an arcade machine. I purchased 3 of the combos... Read More