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Pin Change Interrupts on Arduino

A collection of links that helped me figure out Pin Change Interrupts on Arduino

http://forums.adafruit.com/viewtopic.php?f=25&t=59392
http://www.geertlangereis.nl/Electronics/Pin_Change_Interrupts/PinChange_en.html
http://gammon.com.au/interrupts
https://www.arduino.cc/en/Reference/attachInterrupt
https://github.com/prampec/arduino-pcimanager
https://code.google.com/p/oopinchangeint/
http://playground.arduino.cc/Code/Interrupts

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Posted by on Wednesday, September 23, 2015 in fractally weird

 

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Topographic Map: Lasercutter style

I love working with laser cutters. A good one is the best tool in the world. Here’s a project I made with a laser cutter!

Here’s the finished product:

I took a topographical map, did some processing in Photoshop and Illustrator, and then put the whole thing through a laser cutter and created this beautiful physical topo map!

Original topo map, downloaded from this excellent website: http://www.topoquest.com/:

In the laser cutter:

Top view:

A second draft, with only the main topo lines cut:

Top view of the second draft:

Some day soon here I’ll write up how I went from the original image to the final product. It was a lot of trial and error in Photoshop and Illustrator to get out the info that I needed and it would be nice to have it documented!

 
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Posted by on Saturday, December 20, 2014 in fractally weird

 

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