October 28 - Save Time and Money Making CNC Halloween Decorations
Toss the Toggle
projects be embarrassed by their old-school toggles and slide switches! Upgrade them to the power of push buttons! Read More...
Three-Axis Hockey Puck Accelerometer Data Logger
Accelerometers can be used in many applications, and this unique device is no exception — especially when it’s combined with our poor man’s seismometer from a previous issue. Read More...
Zener Diode Tester
It’s very time-consuming to set up a power supply and voltmeter, and then select a series resistor to limit current just to measure the voltage of diodes. The unit described here is a simple two-transistor circuit that needs nothing more than a multimeter to build, test, and use it. Read More...