You may have seen shrunk coins before but you may not have seen the technology that goes behind making them. Thanks to Aud1073cH for sending in the video above that The Geek Group made showing how they make the coins that they sell as a fund raiser item. If you are interested in purchasing other coins such as the Canadian Toonie (pictured below) have a look at this site
If you are one of the people that think tube audio is superior to modern audio amplifiers you might want to have a look at this Valve Headphone Amplifier based on the ECC88. The ECC88 looks to be an inexpensive tube that can be used for a variety of purposes. One thing to note with this design is that there is high voltages present in the circuit so please
  This Hershey Kisses Dispensing Robot that duboisvb built will let you catch James Woods! This cute robot uses a Picaxe microcontroller project board and is programmed to drive in a heart pattern and drop kisses along the way. A few gear motors are used to let the robot drive the pattern and a small servo is used to control the candy drop. A simple coaster wheel is used
 The guys over at Whiskey Tango Hotel have made a Arduino Spirograph that will provide hours of viewing enjoyment. An Arduino controls the action, 3 motors spin mirrors and a laser is bounced from one to the other while they are spinning to produce a cool spinning effect. If you are interested in making one you can grab the code from the project page. “For the project you
What do you do when you have an old treadmill and the controller dies? Most people would haul it to the dump, some might contact the manufacturer and see if a replacement controller is available, having it repaired in your home is probably not an option since the diagnostic call can repair service call and repair parts would probably cost more than a new unit. Parallax forum member knikula
If you are looking to make some noise with your next project, have a look at the Micro Granny, it’s a Pocket Sized Arduino based Granular Sampler. Via: Make “Features: basic parameters of sound: pitch, crush, volume, start, cut, repeat micro sampling parameters of sound: shift speed, loop length, shift direction (forward,backward,random1,random2) lfo parameters of sound: rate, amount, destination (pitch, crush) instant loop feature micro SD card slot  (plays
This forum post over at the EEVBlog Forum gives us a great look at the inside of an old Tektronix 465 Oscilloscope and walks through the repair and refurbishment of the scope. The refurbishment isn’t just taking a cotton swab and rubbing out some dirt, it is rather invasive including a complete system dismantle and cleaning. Nice thing about this method is we get to see all of the
