Learn how to hook up an analog input (potentiometer) and output (LED) using a Microchip BLE module.
October 21, 2019 by Aaron Hanson
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
This project demonstrates and discusses the performance and functionality of an inductorless ±5 V power-supply circuit.
June 18, 2018 by Robert Keim
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
This is a protoype of a fitness wearable device designed to vibrate when it detects stagnation.
December 13, 2017 by Demsey Kirkwood
In this article, we’ll evaluate different firmware strategies in our pursuit of maximum-frequency analog signal generation.
December 08, 2017 by Robert Keim
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
LED ring flashes and lights can be a valuable tool for photographers. In this tutorial, we are going to build our own ring light out of LEDs!
January 26, 2017 by Alex Udanis
Tracking an infrared light source is not as difficult as you might think; a 14-pin PICAXE, a stepper motor with a driver IC, three phototransistors, and a few other components will do the trick.
January 17, 2017 by Charles R. Hampton
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
We’ll continue our discussion of the C-BISCUIT demo bot by looking at portions of the RCB schematic that weren’t covered in the previous article.
October 07, 2016 by Robert Keim
Building a metal detector using a Colpitts oscillator and an Arduino.
October 03, 2016 by Evan Kale
The Crop Duster Buster is sure to keep your pet's toot smell away!
September 26, 2016 by Ryan Jones
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
Part One in this three-article series focuses on using the SAM4S timer/counter peripheral to precisely control the DAC’s sampling rate.
April 28, 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
Learn how to read electrical signals and data from an analog device using the Step Response technique in Part 5 of the Building Raspberry Pi Controllers series.
February 09, 2016 by Don Wilcher
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