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
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!
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
If you are looking to sniff for RFID information, this is the project for you! “In this study we show that the modeling predictions are quite accurate. We show how to build a portable, extended-range RFID skimmer, using only electronics hobbyist supplies and tools. Our skimmer is able to read ISO-14443 tags from a distance of $25cm, uses a lightweight 40cm-diameter copper-tube antenna, is powered by a 12V battery–and requires
Want to add a touch of cool to your next PIC microcontroller project? Why not have it play some ring tones. There is full source code and an explanation available. “Using only a speaker and decoupling capacitor, it is possible to generate tunes or melodies from your Microchip PIC16F87x processor. A timer can be used to generate each of the eleven musical notes and another timer can be used to
Valojuova from Finland has created a crazy DIY invention for cooling a can. The Peltier CAN cooler uses the peltier effect for cooling. Looking to cool a bit more with a peltier device? Check this out. “PWM controlled peltier cooler, 12V, 80W peltier. I can holder was lathed from aluminium by some other students. I just gave him the blueprints. Hot side is cooled with Igloo 7200 Light. I haven’t
