If you’ve ever made designs with a Spirograph, you can probably conjure up the feeling of swirling the gearlike wheel inside the plastic ring using the tip of a pen — and also recall being amazed at ...

What's cooler than a green laser? A green laser that paints semirandom moving spirograph patterns on your wall. Toronto-based hardware hacker Artur Petrovskyy shows you how to make one of your own ...