DIY Railgun

October 17, 2005 By 3 Comments

railgun

We’ve hit on a few EM projectile systems recently, so [Jason Rollette] thought it would be a good time to cover his railgun. I couldn’t agree more. Jason has been keeping his Railgun Blog up-to-date from nearly day one. Right now he is assembling a larger capacitor bank to power the gun. The PVC piping you see in the picture … Read the rest

Filed Under: misc hacks

EFF reverses color laser printer fingerprints

October 17, 2005 By 38 Comments

blue led

The EFF has broken the tracking code for the Xerox DocuColor. The DocuColor prints a faint 15×8 grid of yellow dots on every page. To see these dots you need a magnifying glass. You can also use a blue light to make the dots appear black. The EFF page has a built in application for decoding the dots which … Read the rest

Filed Under: Uncategorized