UtahNature has a few interesting emergency light project uses a few white LEDs to create an inexpensive light. Project 1 Project 2 “We will describe constructing an emergency light using 3 or 4 white LEDs fitted into a 1/2 or 3/4 inch PVC pipe coupling and mounted into a clamp-on miniture light housing. Since most radio shacks have a 13.8 VDC emergency supply, we will configure the light to use
I almost fell off my chair laughing when I saw the Techno-Addict Scarf. “Advertise to the world that you’re alone and want to stay that way with a privacy scarf developed by Joe Malia, a grad student who apparently can’t do without his portable media. Besides being completely dorky-looking, we can’t imagine this garment being anywhere near comfortable. How can you breathe in the thing?”
We featured FastMHz’s fantastic rocket that was launched using an EM coil. Lots of people have been asking him how to make one. This is a video that documents the steps required so that you too can have a cool EM rocket launcher!
After seeing the post about the giant MP3-Player LED display panel Dave left a comment about this one. Thanks Dave. “Construction uses 1.6mm diameter tinned copper wire for the ground and +5V connections to the modules (ground connections run horizontally and vertically, +5V connections run horizontally). The vertical ground connections up the vertical leg of the T are 12 1.6mm diameter tinned copper wires. The horizontal power connectors are connected
The guys over at Hacker’s Bench have stumbled on a heat sink that could possible be used for this system… “The device is actually three heatsinks with 2 gigantic diodes between them making a half-wave bridge. There are no part numbers or clues on the assembly that I could find on the web, but I did look up the part numbers on the diodes (SW14CXC14C). Now, I’ve used a lot
This is a simple circuit that can easily be perfboarded. With just a handful of components you can monitor the water content of your plants soil. The picture is of the new version, have a look at the old version also. “Circuit Operation: 1) When the soil is very dry, the LED flashes brightly, since the soils resistance is very high. 2) When the soil has been watered a few
I think I am going to enjoy the world of the future, I will have a gadget for every task. Check out this automatic lawnmower. ” * Get your lawn cut automatically * No need to collect the clippings * Very quiet, virtually silent * No gas, no oil, no emissions * User friendly * Exclusive safety features * Designed for domestic lawns of any size Friendly Robotics® is focused
