June 2014

How to Recover Gold from Scrap Computer Parts

  LifeBuzzN shows us How to Recover Gold from Scrap Computer Parts. This process involves dangerous chemicals so if you attempt it please use caution. If you have a look at the edges of most computer parts you will see that they are gold plated. In the video memory chip gold fingers are being used but you will find gold fingers on video cards, audio cards and many other parts

Arduino tracks Near Space Launch

     Ugifer send this box of electronics 124,000 feet in the air. The view sure looks great from that height! To track the balloon he used the Space Near Us tracking system, a custom PCB was created to keep the circuit as robust and compact as possible.  “Radio – in the UK there are only a few narrow frequencies you can use from the air and even then you

Samsung NX300 Camera Hack

  When you think of rooting a device that lives in your pocket you will probably think of your smart phone. With the new Samsung NX300 Smart Camera you now have more pocket items to root. Lars shared this hack by Georg Lukas about Hacking the Samsung NX300 Camera and also rooting it. “Experience shows that most firmware images provide an easy way to run a user-provided shell script on

Northrop Grumman X-47B RC Plane Build

    Check out this Northrop Grumman X-47B RC Plane Build by Eric Maglio. “The internal structural parts were cut by laser from some 1/8″ plywood. They were assembled first, then glued inside the skins during the joining process. Much clamping ensured a tight fit. It was easiest to install the landing gear and doors next, while the model could still be rested inside the molds. All of the hinges

Name the Thing Contest – 254

    The prize this week is an Arduino SD Card Reader. This contest will run for one week (June 15 – 20, 2014). Ending time is based on central standard time. To enter, identify the item above and what it can be used for. Please note the image above is a side view of the thing. Please do not give the answer in the comments. Send an email to

Laser Cut Mitre Joints

  When laser cutting with most laser machines you can only cut straight down. How can we cut angles? Make a jig, Martin Raynsford from Just Add Sharks shows us how. “Here at Just Add Sharks, we’ve been running some experiments using these cutting jigs and the results are pretty promising. The first and arguably most useful jig holds the material at 45 degrees to the laser beam. The panels that

Robot uses Kinect for Mapping

  Check out this Robot that uses Kinect for Mapping that Sean Anderson, Kirk MacTavish, Daryl Tiong, Aditya Sharma from University of Waterloo built for their 4th year project. “Current accomplishments: – Optical Flow using Shi Tomasi Corners – Visual Odometry using Shi Tomasi and GPU SURF . . . . Features undergo RANSAC to find inliers (in green) . . . . Least Squares is used across all inliers