Build a metronome that sports a number of impressive features lacking on even more expensive commercial units.
Ever need negative voltage when all you can get is positive? This voltage mirror device will give you -V out when you put +V in, and works over a range of voltages without adjustment.
Use this novel assembly to determine the gravity of most any situation.
by Jeff Eckert
Events, Advances, and News (1.2013)
Some of this month’s tidbits include a supercomputer that hits 20 petaflops/s, the next-gen of the iMac family, and how to record your entire life effortlessly.
by Joe Pardue
Smiley’s Workshop 54: The Arduino Proto Shield Alarm Clock — Part 1
Transferring the alarm clock components from the mini breadboard to the prototyping area on the proto shield, then writing some useful software. Part 54
by Russell Kincaid
Reader Questions Answered Here
Questions about a voltage converter, a trigger LED from a distributor, and a bench top power supply are answered, plus a digital pressure gauge is revisited this time around.
by L. Paul Verhage
Using the Nearspace Simple Flight Computer
Last time, we covered building the NearSpace Simple-18 flight computer. Now, it's time to test and learn how to use it prior to its first near space launch.