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Build Your Own LED Saber—Firmware, Microcontroller, and Testing

Build Your Own LED Saber—Firmware, Microcontroller, and Testing

In part 3, we compile the firmware and build the controller at the heart of the Saber, then do initial testing and diagnostics.


Projects Oct 20, 2016 by Jeremy Lee
How to Design a Bluetooth Low Energy Circuit with Sensor Technology

How to Design a Bluetooth Low Energy Circuit with Sensor Technology

Tutorial on designing a Bluetooth Low Energy (BLE) circuit with the ability to measure 9-axis motion, humidity, and temperature.


Industrial Instrumentation and Control: An Introduction to the Basic Principles

Industrial Instrumentation and Control: An Introduction to the Basic Principles

In part one of this instrumentation and control (I & C) series, we'll go over the fundamental terminology and concepts used when working with industrial plants.


Build an Arduino BLE-Enabled Indoor Air Quality Monitor

Build an Arduino BLE-Enabled Indoor Air Quality Monitor

Use an Arduino/Genuino 101 with iAQ-Core air quality and HIH-6131 temperature/humidity sensors to make an Indoor Air Quality Monitor with Bluetooth low energy (BLE) connectivity.


What Is LiDAR and How Can I Use It?

What Is LiDAR and How Can I Use It?

Learn the basics of what LiDAR is, how it works, and how it's applied.


Build Your Own RFID Technology Using an Arduino MEGA

Build Your Own RFID Technology Using an Arduino MEGA

In this article, we are going to learn some basics about RFID technology and use an Arduino MEGA to a play around with a popular RFID module, the ID12LA.


Projects Jul 20, 2016 by Joseph Corleto
How Sensor Fusion Works

How Sensor Fusion Works

Sensor fusion is the art of combining multiple physical sensors to produce accurate "ground truth", even though each sensor might be unreliable on its own.


C-BISCUIT Power: Assembly and Testing of Regulator and Crowbar Circuits

C-BISCUIT Power: Assembly and Testing of Regulator and Crowbar Circuits

Continuing the C-BISCUIT series, this article outlines how to populate and test the surface mount PCBs designed in a previous article using a hot air rework station and other various electronics tools.


Projects May 31, 2016 by Patrick Lloyd
Build a Desktop Industrial Automation Trainer

Build a Desktop Industrial Automation Trainer

In this project, the reader will learn how to build and program a desktop industrial automation trainer for experimentation in robotics, motor, and process control system concepts on their workbench.


Projects Apr 21, 2016 by Don Wilcher
Embedded PID Temperature Control, Part 6: Ziegler–Nichols Tuning

Embedded PID Temperature Control, Part 6: Ziegler–Nichols Tuning

In this article, we will use a simple, proven tuning procedure to find effective values for proportional, integral, and derivative gain.


Projects Mar 07, 2016 by Robert Keim
Embedded PID Temperature Control, Part 5: Adjusting Gains

Embedded PID Temperature Control, Part 5: Adjusting Gains

We will explore how P, I, and D gain influences system performance, and in the process we will find a gain configuration that works well for our temperature controller.


Projects Feb 29, 2016 by Robert Keim
Embedded PID Temperature Control, Part 4: The Scilab GUI

Embedded PID Temperature Control, Part 4: The Scilab GUI

With USB communications and a Scilab graphical user interface, we can really see what the PID controller is doing.


Projects Feb 19, 2016 by Robert Keim
Embedded PID Temperature Control, Part 3: Implementation and Visualization

Embedded PID Temperature Control, Part 3: Implementation and Visualization

We will implement a basic PID (proportional–integral–derivative) controller in firmware and observe the results using an oscope and LEDs.


Projects Feb 15, 2016 by Robert Keim
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
Embedded PID Temperature Control, Part 1: The Circuit

Embedded PID Temperature Control, Part 1: The Circuit

Invoke the power of the PID (proportional–integral–derivative controller)! The key components in this design are an EFM8 microcontroller, a DAC, and the MAX31855 thermocouple-to-digital converter.


Projects Feb 01, 2016 by Robert Keim
Galvanic Isolation: Purpose and Methodologies

Galvanic Isolation: Purpose and Methodologies

Galvanic isolation is a way to isolate functional sections of electrical systems to prevent current flow. A brief explanation of differing methods to create galvanic isolation.


Getting Started with the Bosch BMP180 Sensor

Getting Started with the Bosch BMP180 Sensor

Learn one of the ways to get started with the BMP180 sensor and learn a simple way to improve the data.


Projects Dec 20, 2015 by Alex Udanis
Build a PICAXE ESP-01 Wi-Fi Communicator

Build a PICAXE ESP-01 Wi-Fi Communicator

A PCB for a Wi-Fi communicator using a PICAXE 08M2 and an ESP-01 module driven by interactive code makes a handy setup for data collection and IoT reporting.


Build Raspberry Pi Controllers: LED Flasher

Build Raspberry Pi Controllers: LED Flasher

In this project, you'll learn how to wire an LED and flash it using the Raspberry Pi. Also, to isolate the Raspberry Pi's + 3.3VDC compliant output pins from supply voltages greater than this power source, an opto-isolator will be introduced as well.


Projects Dec 11, 2015 by Don Wilcher
Convert a Vintage Thermostat into a Modern Energy Saver

Convert a Vintage Thermostat into a Modern Energy Saver

Programmable thermostats can save a lot of energy and money. But you don't have to buy one- you can convert an old mechanical thermostat into a programmable thermostat using an Arduino and a servo.