If you’re looking for a simple way to make an RF transmitter, check out [Tomasz]’s Morse code transmitter. His design uses nothing more than a microcontroller and a 16MHz crystal to transmit CW Morse ...

LaunchPad dev boards from Texas Instruments are cheap and easy to program, making them a great Arduino alternative if you can do without some of the bells and whistles. [ech0s] put his to good use by ...

This could work for any hollow figurine you have collecting dust on your shelves, but due to Android’s open-source nature a little robot is the obvious choice for DIY hackery. The full tutorial is on ...

Larry Kahaner | Larry Kahaner is an American journalist and author who resides in Bethesda, Maryland. Steve Galchutt shows off the custom-made low-wattage transmitter he uses on his treks. Chase Brush ...

Jim Charlong works his Morse code key. All photos courtesy of Parks Canada. GLACE BAY, Nova Scotia — On Dec.17, 1902, from the seaside Table Head radio station at Glace Bay, Nova Scotia, Guglielmo ...

This series of projects explore concepts of radio communications. We use LEDs to generate (very high frequency) radio waves and photo-resistors to take the place of radio antennas. These ideas are ...

1840: Samuel F.B. Morse receives a U.S. patent for his dot-dash telegraphy signals, known to the world as Morse code. The code Morse devised in partnership with Alfred Vail uses a system of dots and ...

We like to think of space as the one place where all tech is high and all gadgets are bleeding edge. That may be the case most of the time, but Japan’s Fukuoka Institute of Technology is taking one ...