Browsing All Posts filed under »linux«

GLSL Sandbox on the Raspberry Pi

May 13, 2012

4

I hope many of you have seen the excellent and fun WebGL GLSL sandbox at http://glsl.heroku.com/. This live editing of shaders is an excellent learning tool, as it allows you to watch the consequences of any changes you make. I am constructing some simple OpenGL ES scripts as a learning resource for anyone new to it, […]

Spectrum Emulator running on the Raspberry Pi

April 29, 2012

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I compiled the Fuse emulator on the Pi itself once I had the SDL development libraries installed via apt. I also enabled swap, as at one point it looked like gcc’s memory usage was going to hit the 128Mb CPU RAM limit. Once built, I enabled the ALSA sound module and fired it up – […]

Using OpenGL ES 2.0 on the Raspberry Pi without X windows.

April 27, 2012

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[EDIT: This post contains information from the early days of the RasPi and may not be that relevant to its current software build. I don’t actually have anything to plug my RasPi into anymore so I cannot check or update any of the video/OpenGLES work. (I have laptops but no TV – go figure.) Please […]

Raspberry Pi’s onboard Serial connection

April 24, 2012

17

One of the reasons I was excited to play with the Pi was the rank of pins on one of its corners, the ‘low-level peripheral‘ pin-out. GPIO pins, SPI, I2C and even an onboard 3.3v serial connection (UART)! In fact, in the stock debian image, it is configured to output the bootup messages and the […]

Fix for OpenCV python binding – cv.MatchShapes returning NoneType rather than double

January 4, 2011

1

The fix can be easily made if you build from source (building for debian). The key line that needs to be altered is at line 1131 of trunk/opencv/modules/python/api [svn browse ink]: ... QueryHistValue_3D double CvHistogram hist int idx0 int idx1 int idx2 QueryHistValue_nD double CvHistogram hist ints idx # Matching MatchTemplate CvArr image CvArr templ […]

December 12, 2007

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A few things of note: I sm the proud new owner of an Asus Eee PC It comes with linux (Xandros) installed by default! It has all the usual bells and whistles – firefox -> youtube and internet radio works out of the box, openoffice, pidgen (instant messanger that handles just about every protocol, msn, […]