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[Zach] saw a stuffed animal that projected some simple stars on the ceiling. This gave him an idea that he could build a tiny star projector for his 3 month old daughter’s room.  The idea is to put an LED inside a ping pong ball with tiny holes and rotate it slowly. The electronics are [...]

Tags:  baby bringing idea zach ping-pong-ball star-projector tiny-holes home hacks  

Members from the London Hackerspace recently got a little on-air time with a ping pong ball launcher. They were invited to build something for the Click show on BBC. The launcher that they built responds to hash tags on Twitter by barraging the audience with balls. The hardware was built in two parts. The first is a [...]

Tags:  tweets hackerspace launcher london ping-pong-ball-launcher ping-pong-ball tv-members misc hacks  

[Andrew] and his brother had some time (and a lot of ping pong balls) on their hands, so they decided to have some fun and built a remote-controlled ping pong ball turret. Arduino aside, the turret is cheap and easy to build as [Andrew’s] writeup explains. The firing mechanism was constructed using a pair of [...]

Tags:  turret ball pong andrew ping-pong-balls ping-pong-ball ball-turret arduino hacks  

Here’s an odd little box that might get those creative juices flowing for the upcoming Halloween season. [Jeremy's] creepy glowing box has a pair of ping-pong ball eyes which diffuse the red light from a pair of LEDs. Both the lid and they eyes move, and the whole thing is set up for wireless control. [...]

Tags:  box pair halloween jeremy ping-pong-ball those-creative-juices halloween-season misc hacks  

If you’ve been lusting after your own glowing display we’re here to help by sharing some simple building techniques that will result in an interesting project like the one you see above. This is a super-accurate clock That uses ping-pong balls as diffusers for LEDs, but with a little know-how you can turn this into [...]

Tags:  display building ball ping-pong-balls ping-pong-ball accurate-clock clock hacks  

This giant Madagascar hissing cockroach rides proudly atop his three-wheeled robotic platform. This project from several years ago is new to us and our reaction to the video after the break is mixed. We find ourselves creeped out, delighted, amazed, and saddened. The cockroach controlled robot uses a trackball type input. A ping-pong ball is [...]

Tags:  cockroach platform ride madagascar madagascar-hissing-cockroach giant-madagascar ping-pong-ball robots hacks  

[Elgatoandaluz] has posted this guide on how to tear apart a standard optical mouse and build a custom trackball. He’s using a ping pong ball , mounted above the laser as the trackball itself, which seems like it would be a little lite, but functional. The case is scrap cardboard. We really like that you [...]

Tags:  super elgatoandaluz trackball ping-pong-ball optical-mouse cardboard peripherals hacks  

[Mitchel Humpherys] and his fellow developers didn’t just develop a maze-solving algorithm, they also built a ping-pong ball maze platform that is computer controlled. Using a webcam the computer picks up the high-contrast maze by peering down from above, calculates the solution, and moves the ping-pong ball to the goal using two different tilt servos [...]

Tags:  ball computer maze mitchel-humpherys ping-pong-ball using-a-webcam fellow-developers home entertainment hacks  

This video brought a smile to our faces. [Griffin Milsap] is creating live music using an orchestra of solenoid instruments. Each solenoid is set up to strike an object such as a bowl or mug. The trigger mechanism is a light sensor inside of a ping-pong ball. The collection of instruments is conducted by a [...]

Tags:  laser orchestra solenoid griffin-milsap ping-pong-ball light-sensor digital audio hacks