MakerBot arrived!

Posted by Nikolaus Gradwohl Fri, 18 Dec 2009 04:06:09 GMT

My MakerBot CupCake CNC Delux Kit arrived yesterday!

content

So far i managed to assemble the body of my cupcake

makerbot body

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Falling letters in processing

Posted by Nikolaus Gradwohl Thu, 17 Dec 2009 05:10:59 GMT

My latest processing-sketch features some letters that are dropping from the top of the window to the bottom and form a word.

click here to see it in action

hello

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plasma in processing

Posted by Nikolaus Gradwohl Wed, 16 Dec 2009 04:39:59 GMT

I wrote another simple and pretty useless (i mean simple, pretty and useless :-)) sketch in processing. I wanted to see how the noise function reacts so i wrote a sketch that draws plasma. Press any key to change between color and grayscale mode.

colored plasma grayscaled plasma

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Random Lines in Processing

Posted by Nikolaus Gradwohl Tue, 15 Dec 2009 01:50:49 GMT

I made another completely useless sketch in processing

click here to see the lines move in action

randomlines

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3D-Scanner

Posted by Nikolaus Gradwohl Mon, 14 Dec 2009 15:49:14 GMT

Today i managed to make a scan using my conmark L2000 3D-Scanner that looks at least similar to the object i tried to scan :-)

it's not quite what i hoped it to be yet, but at least it's a start.

original: original

scan: scan

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Using an arduino as a AVR Programmer

Posted by Nikolaus Gradwohl Mon, 14 Dec 2009 00:53:46 GMT

I managed to use an arduino as an isp programmer for my ATTiny13. I first i tried to use the avr910 program described in this blogpost from Randall Bohn, but avrdude could not flash my hex file :-/

then i found a newer version of the code that emulates an avrisp at googlecode

arduinoisp

Read more...

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Resistor Earrings

Posted by Nikolaus Gradwohl Fri, 04 Dec 2009 16:47:41 GMT

today i made some earrings for my wife. 300 kOhm per ear :-)

earrings

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Set operations on ruby arrays

Posted by Nikolaus Gradwohl Sat, 28 Nov 2009 04:23:19 GMT

Ruby provides some very interesting set operations on arrays.

given the two arrays A and B wich look like this

A = ["A", "B", "C", "D"]
B = ["C", "D", "E"]

There are three set operations we can use that union, intersection and difference.

Union

union

A | B

contains all elements from both sets without doublicates. So this results in ["A", "B", "C", "D", "E"]

Difference

difference

A - B

contains all elements from set A that are not in set B. So this results in ["A", "B"]

Intersection

intersection

A & B

contains all elements that are in set A and in set B. So this results in ["C", "D"]

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Proagwrimo 16 - 22

Posted by Nikolaus Gradwohl Mon, 23 Nov 2009 02:06:18 GMT

45 pages so far. I started making screenshots for the examples, and finished some of the code examples.

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Pragprowrimo 11-15

Posted by Nikolaus Gradwohl Sun, 15 Nov 2009 05:42:02 GMT

32 pages so far, i added another section and i finished some of the examples for the book. One example for the chapter on interaction will be a litte game. The player has to type some random letters that appear on the screen. After 20 sections the number of found letters is displayed as the score.

click here to give it a try

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