Thanks to Paul Gittings for leaving a comment with this cool FPGA digital oscilloscope that Jean P. Nicolle from FPGA 4 Fun developed. “Let’s build a simple digital oscilloscope. * Single channel 100MHz/100MSPS (100 mega-samples-per-second) * RS-232 based (we’ll look into USB too) * Inexpensive! A simple digital oscilloscope recipe Using parts from KNJN.com, here are the basic items of our recipe (prices accurate as of this writing, Feb 2007).
Not as creepy as it sounds ROACH is simply an acronym for RObotic Automation Control Hierarchy. “Here you can see the white camera, and conical lense hood of the IR pyroelectric sensor on the pan/tilt head. The pan (stepper)/tilt (servo) mechanism is partially obscured. You can see the main power batteries arranged in a triangular configuration. The SRAM backup power is supplied by 4×1.2VDC NiCd batteries located in the center
This interesting mirror by Daniel Rozin is quite neat. It would be fun to build one of these on a smaller scale using some cheap servos. I can’t imagine the cost of this large unit with over 700 motors! “Rozin’s Weave Mirror assembles 768 motorized and laminated C-shaped prints along the surface of a picture plane that texturally mimics a homespun basket. A seemingly organic smoky portrait comes in
Chris Anderson was lucky enough to visit the Google campus and took some arial pictures with a digital camera mounted to an RC plane. To enhance the picture taking capability of the rig he decided to make a gyro stabilized system to mount the camera onto. Video after the jump. “The secret ingredient is an off-the-shelf “heading hold” gyro made for a R/C helicopter. These can be found for as
Our friend David from Volunteer Lab Rat has built a tesla coil from a 15,000 Volt neon transformer. Make sure you check out his videos on the project page. “An AC power supply, here a neon sign transformer creates 15kV. The transformer will charge the capacitors. As they charge up, the voltage across the spark gap will rise. Eventually the potential across the spark gap will be large enough so
With the gas prices of today I think these types of vehicles are very practice. It gives you the speed and handling of a sports car with the fuel economy of a motorcycle. “We’re seeing more and more vehicles coming to market that are completely impractical and purely for fun purposes and three-wheeler trikes fit squarely into this category. Enter the X2 Arrow, currently being shown in Frankfurt, a uniquely
Ever wonder how much force is coming out the end of a fire hose? Well watch this video to answer that question. Looks like 8 fire hose water jets can lift an entire car!
