October 17, 2006

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