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Creating a DCO-based Audio Synthesizer With an Arduino Nano

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

Hardware Evaluation of a Custom Programmable Wi-Fi Controller: The WiCard

This article explores the schematic design and basic features of a smart programmable wireless controller module I designed: the WiCard.

June 01, 2018 by M. Mahdi K. Kanan

How to Use a Robot to Record and Transfer Audio Signals

This article provides detailed information on sampling audio signals and transferring the data to a PC for analysis.

September 15, 2017 by Robert Keim

Build Your Own Motion Detection System Using an Accelerometer

This project uses a C8051 microcontroller development kit, an accelerometer evaluation board, and Simplicity Studio IDE—all from Silicon Labs—to rather quickly and easily build a motion-detecting alarm system.

August 31, 2017 by Nick Davis

An Introductory Project for Software Defined Radio

Learn how to listen to frequencies on the air with nothing more than a USB dongle: first FM radio, then voice signals.

February 02, 2017 by Christi Durham

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.

November 03, 2016 by Evan Kale

Understanding and Implementing the HC-12 Wireless Transceiver Module

The HC-12 is a 100mW multi-channel wireless transceiver you can use in your projects to transmit and receive serial information.

November 02, 2016 by Mark Hughes

Build a 4-Bit Binary Counter with 5x7 LED Matrix

In this project, you'll learn how to build a 4-bit binary counter using a 5x7 LED matrix for data count value visualization. The project will use a combination of standard electronic and surface mount components.

June 20, 2016 by Don Wilcher

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.

May 09, 2016 by Robert Keim

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.

May 04, 2016 by Robert Keim

NES Controller Interface with an Arduino UNO

Learn about the NES Controller's data protocol, then use this knowledge to easily integrate into an Arduino Uno.

April 29, 2016 by Joseph Corleto

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.

April 28, 2016 by Robert Keim

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.

April 19, 2016 by Robert Keim

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.

April 14, 2016 by Robert Keim

Build Programmable Time-based Switches Using a Real Time Clock

Use DS3231M RTC alarm functions to make programmable, time-based, switches to power devices on and off at precise times.

April 07, 2016 by Raymond Genovese

Intro to Project Development with the Atmel SAM4S Xplained Pro

Learn about basic procedures and techniques for creating your own projects with Atmel’s SAM4S Xplained Pro development platform.

March 28, 2016 by Robert Keim

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.

February 03, 2016 by Robert Keim

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.

January 23, 2016 by Robert Keim

Download Your First Program Using ARM mbed and KEIL MDK V5

The FRDM-K64F is a development platform which utilises the MK64FN1M0VLL12 microcontroller. This tutorial includes how to download a simple blinky example onto the FRDM-K64F using the ARM mbed online IDE and KEIL MDK. Details of the GPIO module configuration are included.

December 17, 2015 by Elliott Smith

Use LaunchPad to Make a Laser Tripwire Alarm

Use the Analog to Digital Converter (ADC) feature of LaunchPad to build a laser tripwire alarm. This is a great way to familiarize yourself with LaunchPad while simultaneously making something cool.

November 18, 2015 by Tim Youngblood