Design a wideband analog multimeter to measure AC voltages and currents from 20 Hz to 1 MHz with a selectable sensitivity from 1 mV to 100 V, while the ammeter has a selectable current sensitivity of 10 mA to 10 A.
May 03, 2023 by John Woodgate
In this project, learn to create a digitally-controlled oscillator or DCO-based audio synthesizer with an Arduino Nano or an Arduino Uno.
April 09, 2023 by Darby Hewitt
This project will explain how to develop a system to measure magnetic field emissions at frequencies up to 150 kHz from high-current power cables without cutting or disturbing the cable.
October 28, 2022 by John Woodgate
This article explains the theory and the construction of the circuit of a 10W practice guitar amplifier.
November 29, 2020 by Teja Sai Marellapudi
Learn how to build your own Class D power amplifier—one of the most efficient ways to listen to music.
August 29, 2018 by Cezar Chirila
Tired of using your PC or mobile phone as a signal generator? It’s time to upgrade to a standalone one by making it yourself.
January 17, 2018 by Cezar Chirila
In this article, we’ll develop firmware that will serve as the basis for high-precision, high-speed signal generation.
December 01, 2017 by Robert Keim
In this article, we’ll develop and test an algorithm for automatically shutting down a robot in response to a collision (or some other violent event).
September 21, 2017 by Robert Keim
In this article, we’ll look at a fairly straightforward circuit that enables a robot or other device to detect sound.
September 11, 2017 by Robert Keim
Nowhere to hide presents this holiday season? No problem! This alarm will sound anytime a loved one tries to get a sneak peek at his or her surprise.
December 05, 2016 by Ryan Jones
Freeze moments in time to easily produce extraordinary close-up pictures with your digital camera, an Arduino, and these simple circuits.
November 14, 2016 by Raymond Genovese
This project will show you how to make a device that can measure resistances as low as 0.1 ohms.
October 26, 2016 by Robin Mitchell
Building a metal detector using a Colpitts oscillator and an Arduino.
October 03, 2016 by Evan Kale
Part Three in this three-article series shows you how to generate values for a discrete sinusoid and continuously convert this data into an analog signal without overburdening the CPU.
May 09, 2016 by Robert Keim
Part Two in this three-article series explores the SAM4S DAC. We’ll look at hardware configuration, electrical characteristics, and the application programming interface.
May 04, 2016 by Robert Keim
In this article we’ll use the SAM4S Xplained Pro development platform to get some hands-on experience with a PWM DAC.
April 19, 2016 by Robert Keim
Invoke the power of the PID (proportional–integral–derivative controller)! The key components in this design are an EFM8 microcontroller, a DAC, and the MAX31855 thermocouple-to-digital converter.
February 01, 2016 by Robert Keim
This analog design allows your LEDs to respond to your music. Just plug your music source into this which sends a channel to your sound system and some LEDs.
October 28, 2015 by Fadi Kasem
Use a laser and a photo resistor to build a laser based point-to-point communication system. The best part? It's under $10.
October 22, 2015 by Jacob Smith
Is IDT’s Tx/Rx wireless power solution suitable for applications that require high-precision analog performance?
October 21, 2015 by Robert Keim
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