By using the internal motion sensor you can do some neat things! “Turns out, the laptop has a built-in motion sensor. Nominally, it’s there to protect the internal hard drive. The basic idea is this: If the accelerometer suddenly notices that the gravitational pull of earth is no longer present, the most likely explanation is that the laptop, sensor and all, is currently accelerating at 9.81 m/s² towards said earth.
If you are thinking of growing some plants indoors LEDs might be what you are looking for. BVnursery has built some LED panels for growing plants and has had some great results. “The target of the project is to develop an inexpensive, effective method of providing light to plants using only leds. This unit is designed to light standard horticultural starter trays measuing 10 x 20″. The logic follows several
If you have turned your MacBook into a lightsaber already, you might want to try out this cool iTunes plugin that takes control of the keyboard and screen backlight. “Using an iTunes visualizer plugin from stewreo.de/keyboarddisco.html. I dimmed the backlight on the screen for better visibility of the keyboard, but the plugin can also flash the screen backlight with the music.” Via: TechEBlog and Make
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
