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A Universal Direct Conversion Receiver For PSK-31by John E. Post Exclusive Online Article: Decode and read text message communications being sent over shortwave amateur radio frequencies.
Radio Locator Beacon For Flying Objectsby Dan Gravatt Exclusive Online Article: The locator beacon weighs about an ounce with its 12-volt A23 alkaline battery, and could be made lighter with the use of surface-mount parts. It’s also simple and inexpensive, so you can afford to build another one if necessary.
Analog Mathematicsby Gerard Fonte Even in the midst of the digital revolution, there's still a place for analog mathematics to streamline your designs.
Build the rCube: A Talking Memo Alarm Clock by Dave Decker This unique talking clock and MP3 speaker can record voice memos or your favorite song for your alarm, plus it's an interactive nightlight too!
How to Parallel Power Supplies for Higher Output by Fernando Garcia Assemble this power supply for higher performance from your class-D amplifier.
Techknowledgey by Jeff Eckert TechKnowledgey 2009 Topics covered include super charged lithium-ions, fuel cell buses, viewing Mars, plus other cool stuff.
Personal Robotics The Saga of a Sonar Station Follow the unique build experience of an interactive kiosk.
Getting Started With PICS by Chuck Hellebuyck Counting Pulses with Timer 0 Keep track of your distance traveled on the golf coarse with this counting application.
Q&A by Russell Kincaid Reader Questions Answered Here Analog tachometer, calulated inductance, soft start AC circuits, plus more.
Smiley’s Workshop by Joe Pardue Smiley’s Workshop: Moving Beyond Arduino (Part 10) Converting Arduino programs into regular C programs that can be used with the official Atmel software.
Stamp Applications by Jon Williams Spinning Up Embedded Control Projects Get in touch with your Propeller side.
The Design Cycle by Fred Eady And Now, A Riff From Jeff Beck Designing a wireless guitar.
Near Space by L. Paul Verhage Your Own Micro Datalogger Build a bigger and more powerful flight computer.