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Build a Variable Voltage Reference
While most voltage references only generate a single voltage, this design offers variable voltage from zero to 10 volts.
A 3-in-1 Tester for Your Lab
This DIY piece of test equipment packs a punch!
Build a Frequency Counter
Get your “freq” on with the unit presented here.
Hack an LED Desk Lamp
Turn an ordinary lamp into a battery operated emergency light.
Wirespondence, Serial Bluetooth with a Micro, Analog Front End, AM/FM Receiver Restoration
Analog Waves from Digital Signals, DIY Electric Scooter, The Solar Alternative, Driving LEDs with a Microcontroller
Selected questions from past Q&A columns.
Need to brush up on your electronics principles? These multi-part series may be just what you need!