I've been looking for ideas on how to launch a ping pong ball a small distance (< 1 metre) for a game. Solenoids look like they might be useful but I'm not 100% on what force/type I need. I can mount it under a base and have the balls roll over it, with a pin pushing the ball up a ramp to it's target.
As it's only a ping pong ball, it should be light. I was considering something like this: http://www.adafruit.com/product/412
Am I along the right lines? Or should I go back to the drawing board.