the folks over at OpenSchemes are at it again. This time they’ve cracked open a low end ZerPlus logic analyzer and modified it to function the same as the higher end model. The 16 channel version they purchased appeared to be fully capable of handling the 32 channels of the more expensive model. The installation of the additional components looks like it might be somewhat difficult, but it is certainly cheap.We love seeing things upgraded for cheap. You might recognize OpenSchemes from when they upgraded the DMM tweezers or hacked the USB serial adapters.
Lacking the patience to do it by hand, GeekPhysical built a CNC machine to decorate Easter eggs. We do mean eggs from chickens used to celebrate the Christian holiday of Easter, not hidden nuggets in technology used to amuse geeks. The results seen in their video (after the break) are quite impressive considering that the printing medium is not perfectly round nor perfectly smooth. The hardware design is ingenious; one servo rotates the egg, another is mounted on one side of the egg and moves a track in an arc so that a felt-tipped pen will follow the curve of the shell. The pen moves in an out along that track through the use of a third servo physically removed by a Bowden cable. We were able to get a closer look at the hardware via their Flickr set and the device is indeed Arduino powered. This fun build is a great way to celebrate the season!
Continue reading “CNC egg decorating”
A Nixie tachometer is new to us. We’ve seen tons of various displays, but not a tachometer. After having extensive annoyances with the factory ignition timing system in his totally awesome Holden Gemini, [Brett] installed a MegaJolt electronic ignition system. To top things off and add that extra bit of flair, he built a nixie tachometer to sit on his dash. Not only does it have the numeric read out, you can see a nixie “bar graph” on top as well. Skip to about 2:30 if you want to go right to the action. You can download the Arduino code from the forum post.
What weighs 120 pounds, can fly at you near 20mph, score soccer balls, climb 90inch tall towers and more all while remotely controlled? If you said a robot from this years FIRST, For Inspiration and Recognition of Science and Technology, competition congrats you’ve won one internet.
This past Thursday, Friday, and Saturday (March 25-27 respectively) the Oklahoma FIRST regional competition took place. Once again I, HaD writer [Jakob] was lucky enough to not only attend, but compete! Check out our full breakdown after the jump. Continue reading “(the) FIRST Robotics competition”
The magnetic tape found in audio cassettes can be fun to play with. This installation, called Signal to Noise, relocates the heads from cassette players to the tips of your fingers in the form of a glove. An accompanying wall has vertical strips of tape which you run your fingertips along in order to play back the stored audio. Get the speed right and you can make out what’s on the tapes. Move back and forth and you’ll be scratching like the worst of DJs.
If this were teamed up with a Melloman it would make for quite a performance. See and hear this curious device after the break.
Continue reading “Analog tape playing glove”