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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
Pulse-Width Modulation with the SAM4S Xplained Pro

Pulse-Width Modulation with the SAM4S Xplained Pro

This article covers everything you need to know to generate pulse-width-modulated signals with Atmel’s SAM4S Xplained Pro development board.


Projects Apr 14, 2016 by Robert Keim
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.


Turn Your PWM into a DAC

Turn Your PWM into a DAC

If your microcontroller doesn’t have a digital-to-analog converter, you can make a passable replacement with nothing more than a pulse-width-modulated signal and a low-pass filter.


Linear Amplitude Modulation Applications

Linear Amplitude Modulation Applications

In this article, we'll delve into amplitude modulation and what it's used for. Also, we will differentiate between communication methods that do and do not use modulation.


How to Create a Gaming System with the Atmel SAM4S Xplained Pro

How to Create a Gaming System with the Atmel SAM4S Xplained Pro

This article provides additional details related to code development, hardware configuration, and the OLED interface.


Projects Apr 01, 2016 by Robert Keim
Fingertip Sized Radar Chip Developed for Mini-Drones

Fingertip Sized Radar Chip Developed for Mini-Drones

A new chip designed at NTU in Singapore could make radar systems significantly smaller.


News Mar 16, 2016 by Murray Slovick
Building Raspberry Pi Controllers Part 5: Reading Analog Data with an RPi

Building Raspberry Pi Controllers Part 5: Reading Analog Data with an RPi

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.


Projects Feb 09, 2016 by Don Wilcher
Embedded PID Temperature Control, Part 2: Board-Level Integration

Embedded PID Temperature Control, Part 2: Board-Level Integration

This article covers the firmware that allows the EFM8 microcontroller to communicate with the DAC and the MAX31855.


Projects Feb 03, 2016 by Robert Keim
Practical FIR Filter Design: Part 2 - Implementing Your Filter

Practical FIR Filter Design: Part 2 - Implementing Your Filter

Implementing a FIR filter designed in Octave or Matlab on an N-bit microprocessor


How to Eliminate Ground Loops with Signal Isolation

How to Eliminate Ground Loops with Signal Isolation

This project explains how to isolate signals to eliminate ground loops in electronic systems.


Projects Jan 29, 2016 by Orrin Bigelow
Practical FIR Filter Design: Part 1 - Design with Octave or Matlab

Practical FIR Filter Design: Part 1 - Design with Octave or Matlab

A simple introduction to designing FIR filters in Octave or Matlab


Design a Color Sensor with Measurements Displayed via an RGB LED Module, Part 2

Design a Color Sensor with Measurements Displayed via an RGB LED Module, Part 2

Learn how to collect and process RGB data generated by the BH1745NUC color sensor IC.


Projects Jan 23, 2016 by Robert Keim
Why the Capacitor in Your Power Supply Filter is Too Big

Why the Capacitor in Your Power Supply Filter is Too Big

The job of the capacitor in the output filter of a DC power supply is to maintain a constant DC value by removing as much power ripple as possible. Because these capacitors have a DC value, they are actually storing a lot of energy that never gets used.


An Overview of the Analysis and Transmission of Aperiodic Signals

An Overview of the Analysis and Transmission of Aperiodic Signals

A signal that does not repeat itself after a specific interval of time is called an aperiodic signal. By applying a limiting process, the signal can be expressed as a continuous sum (or integral) of everlasting exponentials.


Custom PCB Design with an EFM8 Microcontroller

Custom PCB Design with an EFM8 Microcontroller

Tips and techniques for incorporating EFM8 microcontrollers into your custom hardware.


Projects Jan 18, 2016 by Robert Keim
Derive and Plot a Low Pass Transfer Function on MATLAB

Derive and Plot a Low Pass Transfer Function on MATLAB

Learn all about Akerberg-Mossberg Filters and how to plot the frequency response using MATLAB.


Learn About Fourier Coefficients

Learn About Fourier Coefficients

Learn about Fourier series coefficients.


Understanding the Successive Approximation Register ADC

Understanding the Successive Approximation Register ADC

One of the most common analog-to-digital converters used in applications requiring a sampling rate under 10 MSPS is the Successive Approximation Register ADC. This ADC is ideal for applications requiring a resolution between 8-16 bits.


Make Your Switch Sound Activated

Make Your Switch Sound Activated

In this article, we'll build a sound-activated switch that can be opened and closed with a double clap.


Projects Dec 21, 2015 by Tim Youngblood