Chris at The Keeser has constructed a simple circuit to detect infrared light. You can make the project using only 7 parts. A schematic and analysis of operation is also provided. Parts Needed: * 1K ohm * 330 Ohm * LED * IR transistor * 2N3904 NPN transistor (any NPN will do) * Battery Snap * Perf Board “Test the circuit by holding it close to an IR remote control
Looking for another LED project? Have a look at this one that makes some tubes shine. “I’ve had a thing for tubes (aka valves) since I was a kid. They made me thing of mini futuristic alien cities under a dome. I got some on ebay and mounted them on a plinth to make some mysterious object. Then I thought “Wouldn’t it be cool if they GLOWED?”… The LEDs shine
Seems people are getting creative when making batteries. We aren’t seeing the typical fruit batteries that everyone has made in high school. An example of a creative battery that you might remember from a few months ago is the penny battery. Well I would have to say this potato battery is a step up in creativity. I wouldn’t have thought you could make a battery out of potatoes, but I
Having reception problems with your Itrip or another FM transmitter? Well you are not alone! Jojoskarr (Joe) came up with an interesting idea that uses items that you probably already have collecting dust in a closet. A USB cable, small transformer and come Coax cable is what he used to solve his iPod Nano reception woes. “After experimenting I stumbled across the wonders of how coaxial cable works great for
So you have already build a hard drive clock. What else could an old hard drive be good for? How about a hard drive generator? The guys at The Workshop were thinking outside of the box when they came up with this one. “Here’s an excelent way to recycle your old hard drives and have them create energy for you! This site shows how to use a bunch of old
What can you do with an LED? They only provide light right? Wrong! JustDIY has done some extensive testing and documentation of a phenomenon that is not very well known. LEDs can be used as an input device! “This is a collection of the work I’ve done with using the bi-directional properties of LEDs. I have also included links to information I’ve found on the subject and the project by
Blue Bawls Automatic Light Ok get your mind out of the gutter. I am talking about the beautiful blue glass bottle that the Bawls soft drink comes in. I tried one the other day and thought the glass bottle could be used for something interesting. At first I was just going to stick an LED into it, but I wanted something a bit more interesting. So I threw together a
