The Jack-o-LED project lights up a pumpkin with color changing LEDs. This puts the single color pumpkins to shame… “So a couple of weeks ago I was grocery shopping, and on a whim, I bought a pumpkin. I hadn’t made a jack-o-lantern since I was a kid, and I decided to try to do something interesting with it. I found some really cool patterns that I was going to
If you have the parts listed below, you are in luck. You can build yourself a cool LED Fan. “Prerequisites: 1 floppy drive, defunct; 6 leds, preferrably different colours; a short length of thin wire; a short length of thicker wire; some drilling and soldering skills.” Via: Primitive Engineering
Full details on how to construct this remote controlled scissor halloween prop is available. The build plans are well done, but it does look like a complex build process. After Halloween you could mount a huge boxing glove to it, I can’t think of a better way to get rid of door to door salesmen who don’t take no for an answer!
Here is a nice LEGO hack that will put a smile on anyone’s face! Seems that a standard 5mm LED fits quite well into the heads of LEGO people. 🙂 “It’s a good idea to carve your head before putting the LED in. (No, not your head, the head of your Lego minifigure.) This is particularly important if you’re starting with an older Lego head, since the suction can make
There are easier ways to flash LEDs but this project is sure creative! “The premise is easy all you want to do is rotate a coffee (or whatever type can on axis of its length like a drum rolling down a hill) with a small motor spinning it. You need one contact point that will be consistent to supply power to the drum, and etched areas through the paint to
When interfacing a microcontroller to a computer so they can share data back and forth a RS232 port is often used. Most microcontrollers can only output 5 volts and ground (zero volts). What’s the problem you ask? Well have a look at the chart for the mark state. That’s right true RS232 requires a negative voltage to indicate mark. One good thing is that computer manufactures have been sliding the
Blake sent in some pictures of a cool robot that was built using an old CD-ROM drive. I will have to take a look in the storage room, I may have some old 2X drives still kicking around… “I contructed a simple robot about a year ago. It’s chasis is made from an old SCSI CD-ROM drive. It uses the mechanics of the drive to pull itself along a
