Chaos Geordend

An open source alternative to Matlab

Another find of the FEM study is Octave, a great Math package.

Octave is a reimplementation of part of Matlab developed by Professor John Eaton at the University of Texas, Austin, and later at the University of Wisconsin, Madison.

If you are looking for an Open source alternative to Matlab you should give Octave a try.

Vervolg "An open source alternative to Matlab"

Geplaatst op zondag december 25, 2011

dec 2

A textscanning workflow

For a project that involved dozens of print pages to be saved as textdocuments, I used the Tesseract OCR program together with the Netpbm library.
Here's what the three step workflow looks like.

Vervolg "A textscanning workflow"

Geplaatst op vrijdag december 2, 2011

aug 2

Wake on LAN

To enable wake-on-LAN over the Internet, the open hardware platform Arduino is used here.

Not all routers support wake-on-LAN from the Internet to LAN. This depends on whether you can configure the ARP cache and send or forward a WOL broadcast package.

To support WOL, in this case on an Apple TimeCapsule, an Arduino Ethernet Pro board is used. Thus having a low-power device (Arduino) listening for WOL.

Both the Arduino board and machine to wake-up are connected via Ethernet to the TimeCapsule. The Arduino is powered using the TimeCapsule USB port.

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Geplaatst op dinsdag augustus 2, 2011

jun 6

FEM O.C. Zienkiewicz et al.

the Finite Element Method, its basis & fundamentals, O.C. Zienkiewicz, R.L. Taylor, J.Z. Zhu, 6th edition ISBN 0-7506-6320-0.

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Geplaatst op maandag juni 6, 2011

sep 26

Formulas in OpenOffice

Studying the Finite Element Method, I ran into a booklet with some math exercises. Just for the fun of finally using OOO formulas ;-), I created this OOO calc document for exercise 1.2.

"Exploratory Examples - for Real Analysis", by J.E. Snow and K.E. Weller, ISBN 0-88385-734-0, The Mathematical Association of America

Geplaatst op zondag september 26, 2010

sep 4

Formulas

Again the FEM study leads to unexpected interesting stuff, such as Sage, a wonderful Math package. If you want to explore Math and you are not (yet) prepared to buy Maple or Mathematica, start with Sage.

Geplaatst op zaterdag september 4, 2010

feb 11

Finite Element Modeling

My first, modest, steps in modeling the heaterbarrel of my RepRap 3D Printer. Starting with a 2D model. Not taking into account real-life stuff such as convection, radiation and other effects (I am probably not even aware of :-)

Vervolg "Finite Element Modeling"

Geplaatst op donderdag februari 11, 2010

dec 31

3D Printer

In november I ordered a MakerBot Cupcake printer, to have at least some results with a 3D Printer this year ;-) Last week the package arrived and this week I started assembling the MB body.

Geplaatst op donderdag december 31, 2009

sep 25