Hi mikrocontroller.net folken!
These pictures are displayed on a conventional analog oscilloscope in X-Y mode. The oscilloscope is attached to a soundcard output, and the PC is playing a "sound" generated by a Python script in Blender. The script converts manually traced vectors into a wav-file. The blanking is unavailable since only stereo output is used, so thin traces can still be visible. The unpleasant effect is reduced by keeping the scanning speed slow at visible spans and accelerating it during the blanks.
Here is a zip file with .blend that has the script and a sample mesh. Note that output is not really .wav but rather raw pcm, you probably need some audio editor to output it properly. Or you can always modify the script. Download here.
Here's a nice piece of resistor pr0n by someone whom I don't know: http://crackerdiet.net/pub/resistor-pr0n.jpg. If you happen to know the author, please let me know so I could give him credit. I can be reached as svo on irc (freenode) or as svofski somewhere on google mail.
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It was also interesting to learn that some censors treat this simple technology demo as actual pornography. Support FAP.