Left and Right arrows to turn. "space bar" key to reset drawing. "h" key to momentarily hide everything if want to see full picture (to take screenshot or something like that) HINT: The best patterns are when the two rotation speeds are relatively prime to each other! HINT: You get even cooler patterns if you draw a pattern, then revert the bars to original position, then draw with the speeds switched! (note: only works when one speed is odd and the other is even)
UPDATE 2/25/13: increased limit to -30--30 for more possibilities for creativity! 2/24/13: Featured! Wow! This is my first (and only) project on Scratch 2.0 beta, and it got featured! Change the rotation speed of either bar to make new and undiscovered shapes! Run in turbo if you're too impatient to watch formation. Credit to TimothyLawyer for fixing the blocky drawing.