User Uploaded Videos

Plasma Speaker - Audio Modulated Solid State Tesla Coil

Florian Maier
796 Plays

Overview and demonstration of my plasma speaker setup. It is an audio modulated solid state tesla coil. The RF is generated with a Class-E MOSFET stage with adjustable frequency.
The sound is modulated on the gate signal of the MOSFET via PWM. The sound is then emitted by the arc itself. Excitation and PWM frequencies are set with DDS generators controlled via a microcontroller board with USB interface. The sound comes directly from the soundcard of the PC. All the hardware and the software is (c) by me ;-)
73 de Florian, DB1LOL

Landing: Success and Failure

Raphael Pirker
1517 Plays

The first year of video-flights is over. Time to reminisce about some of the successful and less-successful landings with this clip.

Landing is the most "dangerous" part of my setup as the camera is taped to the bottom of the glider. This makes normal landings - at least without high risk of damaging the camera equipment - impossible. That's why the glider needs to be caught in mid air. Not always easy, but I'll let the video tell the story... enjoy.

Soundtrack: Belleruche - The Itch
Camera: Sanyo Xacti HD2
Aircraft: Pulsar 3200 Electric (www.girmodell.de)

Air Art

flip
232004 Plays

October 10th 2008
Airship Regatta in Friedrichshafen, Germany.
Fin-Fish by LaChLuVe, Empa Dübendorf, Switzerland

most beautiful airship ever

The Enviromentals (Episode 1) How to Make a Worm Composting Bin

Hal Brindley
8498 Plays

The Enviromentals (Hal Brindley and Leigh Ramsdell) show you how to build your very own worm composting bin.

Science Project: Ballistics

Stephen Georg
235 Plays

Damon's Prop Car

bavetta
356 Plays

Damon Vander Lind built this propeller powered bike with some friends - and it worked really well! The chain drive is routed from the petals, under the seat, then up to the propeller rotating 90 degrees.

Damon's Prop Car

bavetta
360 Plays

Here's Damon riding the sweet propeller bike.

Giant Swing

bavetta
241 Plays

Giant Swing

Potato Cannons

bavetta
255 Plays

Cameron and I firing potato cannons at the opposing dorm building (actually firing ketchup packets)

Roller Coaster: 8.01 The Ride

bavetta
347 Plays

Roller Coaster: 8.01 The Ride