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The Importance of Complex Conjugates

The Importance of Complex Conjugates

This article provides insight into the importance of complex conjugates in electrical engineering.


Flash Freeze Photography with an Arduino

Flash Freeze Photography with an Arduino

Freeze moments in time to easily produce extraordinary close-up pictures with your digital camera, an Arduino, and these simple circuits.


Focusing on Phase: The All-Pass Filter

Focusing on Phase: The All-Pass Filter

How do you design a filter that (ideally) has the same gain for all frequencies? And, furthermore, why would you want to do this?


How to Build a Touchless MIDI Controller with Arduino

How to Build a Touchless MIDI Controller with Arduino

Learn how to build your own touchless MIDI controller using an Arduino... video and code file included.


Projects Nov 03, 2016 by Evan Kale
Analyzing Circuits via Source Transformation

Analyzing Circuits via Source Transformation

This article uses examples to explain the technique of source transformation.


Build Your Own Low-Resistance Meter

Build Your Own Low-Resistance Meter

This project will show you how to make a device that can measure resistances as low as 0.1 ohms.


Projects Oct 26, 2016 by Robin Mitchell
Antenna Basics: Radiation Patterns, Permittivity, Directivity, and Gain

Antenna Basics: Radiation Patterns, Permittivity, Directivity, and Gain

Antennas allow information to be transferred to distant locations. In the second part of this Antenna Basics series, you will learn more about the physics of how antennas work.


C-BISCUIT: Schematic Design for the RCB—Power, Stepper

C-BISCUIT: Schematic Design for the RCB—Power, Stepper

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.


Projects Oct 07, 2016 by Robert Keim
Many Functions, One Tool: The Analog Discovery 2 from Digilent

Many Functions, One Tool: The Analog Discovery 2 from Digilent

An introduction to the Analog Discovery 2 by Digilent.


Creating Novel Linux Controllers for Wearable Devices

Creating Novel Linux Controllers for Wearable Devices

Embedded and wearable systems require new ideas for input controller hardware. But older software still expects a keyboard and mouse. How do we bridge the gap without having to write kernel drivers?


Build Your Own Metal Detector with an Arduino

Build Your Own Metal Detector with an Arduino

Building a metal detector using a Colpitts oscillator and an Arduino.


Projects Oct 03, 2016 by Evan Kale
The Crop Duster Buster! A Launchpad-Controlled Clapper

The Crop Duster Buster! A Launchpad-Controlled Clapper

The Crop Duster Buster is sure to keep your pet's toot smell away!


Projects Sep 26, 2016 by Ryan Jones
C-BISCUIT: Schematic Design for the RCB—Microcontroller, Motor Controller

C-BISCUIT: Schematic Design for the RCB—Microcontroller, Motor Controller

In this article we’ll take a close look at two sections of the custom-designed control board for the C-BISCUIT demo bot.


Projects Sep 21, 2016 by Robert Keim
Understanding MOSFET On-State Drain-to-Source Resistance

Understanding MOSFET On-State Drain-to-Source Resistance

This technical brief covers some useful details regarding a common MOSFET parameter referred to as on-state resistance.


Understanding Linear-Phase Filters

Understanding Linear-Phase Filters

Linear phase response, also known as constant group delay, is an important property in some filter applications.


Understanding Complex-Conjugate Poles in Filter Theory

Understanding Complex-Conjugate Poles in Filter Theory

This technical brief explains the importance of complex-conjugate poles and second-order stages in optimizing filter performance.


Laser Diode Tripwire Alarm… A Launchpad Security System

Laser Diode Tripwire Alarm… A Launchpad Security System

The Launchpad-Based Laser Tripwire Alarm turns your next security system into a secret agent's dream.


Projects Aug 26, 2016 by Ryan Jones
The Basics Behind Constant-Current LED Drive Circuitry

The Basics Behind Constant-Current LED Drive Circuitry

This technical brief discusses the reasoning behind and implementation of constant-current drive circuitry for illuminating LEDs.


Learning About Differential Quadrature Phase Shift Keying (DQPSK) Modulation

Learning About Differential Quadrature Phase Shift Keying (DQPSK) Modulation

This technical brief explains what differential QPSK is and why it can be advantageous compared to ordinary QPSK.


Understanding Quadrature Phase Shift Keying (QPSK) Modulation

Understanding Quadrature Phase Shift Keying (QPSK) Modulation

This technical brief covers the basic characteristics of a digital modulation scheme known as quadrature phase shift keying.