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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.


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
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.


The CMOS Transmission Gate

The CMOS Transmission Gate

This technical brief presents a simple MOSFET configuration that can be used as a voltage-controlled switch.


Signal Conditioning for Pyroelectric Passive Infrared (PIR) Sensors

Signal Conditioning for Pyroelectric Passive Infrared (PIR) Sensors

Learn about the basics, signal conditioning, digital output, and hardware specs of passive infrared sensors.


Understanding the Delta-Sigma ADC

Understanding the Delta-Sigma ADC

ADCs (analog-to-digital converters) can be described as either Nyquist-rate or oversampled converters. The Delta-Sigma ADC belongs to the oversampled family of converters. It relies upon oversampling and noise shaping to achieve high-resolution conversions.


The Actively Loaded MOSFET Differential Pair: Measuring Lambda, Predicting Gain

The Actively Loaded MOSFET Differential Pair: Measuring Lambda, Predicting Gain

In this article, we’ll look at the equation for differential gain and use LTspice to find the value of the channel-length-modulation parameter referred to as lambda (λ).


The Actively Loaded MOSFET Differential Pair: Output Resistance

The Actively Loaded MOSFET Differential Pair: Output Resistance

In this article, we’ll discuss MOSFET small-signal output resistance as we make our way toward predicting the gain of the actively loaded differential pair.


Understanding Arduino UNO Hardware Design

Understanding Arduino UNO Hardware Design

This article explains how Arduino works from an electronic design perspective. It also explains the role of every part of the Arduino.


FIR Filter Design by Windowing: Concepts and the Rectangular Window

FIR Filter Design by Windowing: Concepts and the Rectangular Window

In this article, we'll review the basic concepts in digital filter design. We'll also briefly discuss the advantages of FIR filters over IIR designs, e.g. stability and linear-phase response. Finally, we'll go over an introduction to designing FIR filters via the window method.


Digital-to-Analog Conversion with the SAM4S Peripheral DMA Controller

Digital-to-Analog Conversion with the SAM4S Peripheral DMA Controller

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.


Projects May 09, 2016 by Robert Keim
Understanding and Using the SAM4S Digital-to-Analog Converter

Understanding and Using the SAM4S Digital-to-Analog Converter

Part Two in this three-article series explores the SAM4S DAC. We’ll look at hardware configuration, electrical characteristics, and the application programming interface.


Projects May 04, 2016 by Robert Keim
IoT and the Evolution of Smart Sensors

IoT and the Evolution of Smart Sensors

How cheap MCUs are turning ubiquitous sensors into the next IoT frontier.


News Apr 28, 2016 by Majeed Ahmad
DMA Digital-to-Analog Conversion with a SAM4S Microcontroller: The Timer/Counter

DMA Digital-to-Analog Conversion with a SAM4S Microcontroller: The Timer/Counter

Part One in this three-article series focuses on using the SAM4S timer/counter peripheral to precisely control the DAC’s sampling rate.


Projects Apr 28, 2016 by Robert Keim
Classification of Signals used in Electrical Engineering

Classification of Signals used in Electrical Engineering

Classifying signals is a way to organize the signals that surround us. It focuses design, testing requirements, measurement tools, and expected results. There are many ways to classify signals!


PWM Digital-to-Analog Conversion with the SAM4S Xplained Pro

PWM Digital-to-Analog Conversion with the SAM4S Xplained Pro

In this article we’ll use the SAM4S Xplained Pro development platform to get some hands-on experience with a PWM DAC.


Projects Apr 19, 2016 by Robert Keim
Reading Analog Values and PWM with LabVIEW FPGA

Reading Analog Values and PWM with LabVIEW FPGA

Learn LabVIEW FPGA by programming the on-board Xilinx FPGA of the student-focused embedded device NI myRIO.


Low-Pass Filter a PWM Signal into an Analog Voltage

Low-Pass Filter a PWM Signal into an Analog Voltage

In this article we will take a closer look at how to effectively low-pass filter a PWM signal into an analog voltage.