It’s springtime, the season when eggs traditionally get their moment of glory. In the Egg Contest we want to see what happens when you scramble up your creativity with this theme. Any and all entries highlighting or featuring eggs (or egg-like creations) are eligible.
Jiri Zemanek from Prague sent in this fabulous video of eggs decorated using the EggBot, some with markers, and some with the Electro-Kistka.
Various patterns are generated in Matlab using mathematical equations similar to ones describing Spirograph (or harmonograph) and Phyllotaxis. The patterns are calculated in such a way that when rotated under a stroboscopic light of suitable frequency or when recorded by a camera, they start to animate. It is kind of zoetrope— early device for animation. … Eggs are rotated at a constant speed, special for each pattern, by a brushless motor. No computer graphics tricks are used in the video.
A Utah Teapot is an ideal design for a geeky ornament. For this one, I generated a vector stipple drawing from a photograph of the source object for this digital design icon. There are certainly many other ways to create a Utah Teapot ornament, including, of course, 3D printing.
Our friend Fran has been making holiday ornaments with the EggBot and writes:
I just wanted to let everyone know that I have finally gotten to be able to use the Pilot Gold/Silver Markers.
She suggests dividing the drawing into layers so that after each layer you can take the pen out to shake it to keep the ink flowing. We’ve added her tips to the wiki page about choosing pens for the EggBot.
If you have other tips for which pens you like to use or for working with ornaments, we’d love to hear about them!
David Bliss posted about using a genetic algorithm to create designs for the EggBot using Processing. He says, “Each design is a sine wave with eight different parameters.”
Each time the program is run, an initial population is created with 50 individual designs — each with random values assigned to the eight parameters. You then rate each individual design before evolving the next generation. The algorithm chooses individuals to carry on to the next generations (highly rated designs are more likely to be carried forward, but low rated designs may still be used).
Each of the eggs in the photo above was printed from the same program with waves evolved from random seeds.