What is Gauss? According to whatis.com is: “The gauss (symbolized G) is the centimeter-gram-second (cgs) unit of magnetic flux density. A flux density of 1 G represents one maxwell per centimeter squared (1 Mx ­ cm-2). The gauss was named for the German scientist Karl Friedrich Gauss.” How can this be fun? Watch the videos below and you will soon see! Check out FastMHz for more project details.

“A Gauss Gun is a weapon that fires projectiles using electricity instead of combusion or air pressure. The basic concept is to dump a ton of energy into a coil as fast as possible, generating a strong magnetic field to “suck” the projectile through the coil. The trick is to design your coil properly so that the coil is off by time the projectile leaves it, or you end up with a giant, non exciting solenoid. The cheapest way for the hobbiest is to use large capacitors and a large circuit breaker for a switch. If you have some money, Silicon Controlled Rectifiers (SCRs) are the way to go, allowing less energy to be wasted during switching.”

Here is a cool trick to play on someone. Make their keyboard sing when the caps lock button is pressed. Read more about it at The Mozmonkey Blog.

“Take the musical element from a musical greeting card and connect it to the caps lock LED on the user’s keyboard. Each time the victim presses caps lock the music plays (and quite loud too). This is a great sleeping prank…It might be found on the first day, or weeks from implementation. It’s the perfect prank.”

Hacked Gadget forum member Jared Harley posted an interesting VW sign LED project that he did for his friend Toby. The original blue fluorescent bulb was broken and LEDs were used as an alternative light source. Jared drilled some holes in the edge of the sign, hot glued some current limited LEDs in place and voila, good as new.

“The plan is to remove the light fixture from within the metal casing (slides out) and replace it with an LED fixture. The sign is 301 mm long by 7.5 mm wide. Because of how thin the sign is, I chose to use 3 mm blue LEDs from FrozenCPU.com. 14 holes will be drilled along the top of the sign, each 20 mm apart.”

There may come a time when you need to destroy the data on an old hard drive. If you don’t want to make something cool out of it then here are some fun video hard drive destruction suggestions.

Disclaimer: Many hard drives were harmed in the making of these videos