There's a lot of cool stuff brewing on the Hackaday forums. [igor_b] posted a project he's been working on that uses a servo, motor, wine glass, and a balloon to create a one-glass armonica. A glass harmonica is a series of nested bowls turned on a spindle that is played by running your finger along the rims of the glasses. They're very unique sounding instruments and something [igor] decided … [Read more...]