Posted August 6, 2012 by Chris

“Last summer, I found myself with a few broken cameras on hand. Having lots of lenses to choose from, I decided to try to build a projector.”

Posted August 5, 2012 by Chris

“First thing to do is make a schematic in EAGLE Layout Editor. Once you have done this you can then design the layout using Eagle too. Making schematic first helps because Eagle will show you clearly if you make any mistakes with the PCB.”

Posted August 4, 2012 by Chris

“Convert a standard wax candle into a realistic flickering LED candle. Candles are great for enhancing the ambiance of a room but they deteriorate when used and having a naked flame in your house can be dangerous. My goal was to preserve the look and smell of a traditional wax candle while overcoming their disadvantages.”

Posted August 3, 2012 by Chris

“Using a voltage multiplier is a great way to make a high voltage DC power supply. It is very easy to generate high voltages from easily available components. This page contains information on where to buy the components and how to connect them. It also gives details of sources of mini high voltage power supplys (inverters) which will run from batteries.”

Posted August 2, 2012 by Chris

“Since we now know how to create PWM output with a CPLD or FPGA and we also know how to understand dynamic analog input using an A-to-D converter, we can actually combine these two functions together and create an FPGA DC motor controller!”

Posted August 1, 2012 by Chris

“We find that this construction method gives good results (sensitivity) for measuring the bend of human joints when attached to the body. It is sensitive enough to register even slight bend and has a large enough range to still get information when the limbs are fully bent.”

Posted July 31, 2012 by Chris

“In our demonstration, we address the challenging problem of balancing an arbitrary standard pencil, based solely on visual information. A stereo pair of silicon retinas reports vision events caused by the moving pencil, which is standing on its tip on an actuated table.”

Posted July 30, 2012 by Chris

“The LEDactus is my version of a dry climate niche dweller like a cactus. LEDactus is immobile and attempts to survive by creating a pleasant display. This is of course in the hopes that passersby will be so entranced that they will build the LEDactus’ progeny.”

Posted July 29, 2012 by Chris

“I’ve been trying to use the parts I already own to free up a little space and build some entertaining and possibly useful gadgetry. I previously built a bench power supply out of an old ATX PSU however that was a while back and could really use an upgrade. After watching this excellent youtube tutorial by JumperOneTV, I was inspired to build a version 2 based on his design and this is the result.”

Posted July 28, 2012 by Chris

“I had this cool idea for a prank at the office, a device that generate sound every 6 minutes. This device generates 4 different sounds at 6 minute intervals. The idea is that the sounds are short, familiar, difficult to find and infrequent enough to prevent a hunt for the offending noise.”