[Alan] pointed out this great commercial paintball sentry gun. The gun has a low power motherboard running Ubuntu connected to a firewire camera. Two high torque motors control the pan and tilt of a Tippman 98 custom. The control box allows for easy setup. You can change the sensitivity, color tracking, and firing modes. It also has a remote … Read the rest
Autonomous paintball sentry gun
August 24, 2008 By 18 Comments
DefconBots sentry gun competition
June 24, 2008 By 7 Comments
DefconBots is returning again this year with their shooting gallery robot competition for Defcon 16. They’ve decided to leave the rules unchanged from last year. It’s a head to head competition between fully autonomous guns. The first gun to shoot all the targets on their side of the board wins. The rules aren’t very strict on design; as long … Read the rest
SMS PIN Sentry reader
November 3, 2007 By 39 Comments
[Mr G] in London sent in his pin sentry hack. He wasn’t pleased that the device looks like an old calculator, so he rigged up a SMS board to send him his pin on demand. He multiplexed the output of the display driver to the SMS board. When he authenticates from his phone, the board sends a message with … Read the rest
Robotic sentry gun
September 21, 2005 By 70 Comments
Reader [aaron rasmussen] and his brother Ezra built this awesome robotic sentry gun. The gun is an airsoft replica of an FN P90 and fires 6mm BBs. Pan and tilt are controlled by two hobby servos using a simple controller. Aaron wrote custom software to watch the usb webcam and track targets. There is a video on the site of … Read the rest
Motivating Engineering Students with Microcontrollers
October 11, 2012 By 16 Comments
We see a lot of microcontroller based hacks around here, and it’s not hard to see why learning how to use microcontrollers is valuable to prospective engineeer. Unfortunately, microcontroller courses are dreaded by students since they focus on theory instead of application. In The First Lecure, [Colin] talks to a class of engineering students about how to get practical … Read the rest
Detecting ASCII art across the Internet
April 25, 2012 By 5 Comments
As a web developer and designer, [Victor] has a habit of putting a very nice ASCII signature in an HTML comment at the top of every web page he designs. He was inspired by seeing others do this, and this piqued his curiosity to see who else was doing this. His idea was to scan through a chunk of the … Read the rest
Portal puppet probably won’t kill us
August 11, 2011 By 11 Comments
This incredibly detailed puppet of the Wheatley from Portal was sent into us, and we a so very happy that we’re not writing about a GLaDOS build right now.
Hewn from florist foam and covered Wonderflex and Apoxie Sculpt, Wheatley pretty much tows the line as far as cosplay and prop builds go. What makes Wheatley interesting is his movement … Read the rest
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