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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 Stream Sensor Data from Bosch’s XDK110 Evaluation Board to the MQTT Messaging Service

In this article, we will take a look at the XDK110 rapid prototyping kit, characterize its hardware, explore its software environment, and demonstrate connecting the device to the MQTT messaging service.

April 12, 2018 by Mark Hughes

How to Write the VHDL Description of a Simple Algorithm: The Data Path

In this article, you'll learn how to write the VHDL code for a simple algorithm.

March 15, 2018 by Dr. Steve Arar

Design a Custom Microcontroller Programming and Testing Board

In this article we’ll discuss the design for a custom microcontroller programming/debug/extension PCB and we’ll look at an example project.

February 25, 2018 by Robert Keim

Review of VHDL Signed/Unsigned Data Types

This article will review the “signed”/“unsigned” data types.

February 01, 2018 by Dr. Steve Arar

VHDL Data Types: Some Classifications and the Enumerated Type

This article will first review classifications for the VHDL data types, and then it will discuss the enumerated type.

January 24, 2018 by Dr. Steve Arar

Simplifying VHDL Code: The Std_Logic_Vector Data Type

This article will review the "std_logic_vector" data type which is one of the most common data types in VHDL.

January 05, 2018 by Dr. Steve Arar

The Wi-Fi Eye, Part 2: Firmware, Wiring, and Network Connection

Part two of building a device that can detect Wi-Fi signals and "react" accordingly.

July 26, 2017 by Jeremy Lee

“Everything is Better with Bluetooth”:  Add Your Own Custom Bluetooth LE to Your Next Project

Bluetooth low energy (BLE) is designed to intermittently transmit information using a limited amount of power. This article provides the building blocks that allow you to add BLE to your projects for $5 (plus a one-time purchase of a $15 programmer).

June 28, 2017 by Mark Hughes

Creating a Simple Data Logger with the RIOT (Realtime Internet of Things) Framework

In this project, we will demonstrate the simplicity of RIOT by creating a data logger that will plot levels of light onto a graph on a PC server application.

March 08, 2017 by Robin Mitchell

Custom Microcontroller Design: Assembling, Measuring, Programming

This is part 2 of a step-by-step guide to bringing your custom microcontroller design to life.

December 02, 2016 by Carsten Pinkle

C-BISCUIT: System Integration and Testing

Finally, we have everything we need for a functional robot. Let’s put the pieces together and see what the C-BISCUIT demo bot can do.

November 28, 2016 by Robert Keim

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.

February 19, 2016 by Robert Keim

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.

February 09, 2016 by Don Wilcher

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.

December 11, 2015 by Don Wilcher

Update the Firmware in Your ESP8266 Wi-Fi Module

Updating the firmware in an ESP8266 Wi-Fi module can be frustrating! Here's a procedure to reduce the pain.

October 28, 2015 by Charles R. Hampton

Get Started with Matplotlib in Python to Visualize Data Collected from Measurement Instruments

This article explains how to install PyVisa and MatPlotlib for Python. PyVisa connects a computer to the measurement instruments and matplotlib helps to visualize the data collected from these instruments.

October 24, 2015 by Ujjwal Roy

Breadboard and Program an ESP-01 Circuit with the Arduino IDE

The ESP8266 combination microcontroller/Wi-Fi modules can now be programmed using the Arduino IDE. Here's how!

October 20, 2015 by Charles R. Hampton

Introduction to the MQTT Protocol on NodeMCU

MQ Telemetry Transport (MQTT) is a popular low-overhead messaging protocol used by many IoT devices to communicate. This tutorial will show the user how to to set up a basic MQTT network using Python on his or her computer and an ESP8266 running the NodeMCU firmware.

September 15, 2015 by Patrick Lloyd

How to Make an Interactive TCP Server with NodeMCU on the ESP8266

Learn how to connect your device with Linux Screen using the built-in Lua interpreter to set up the file system and connect to the network. Then, learn how to automate the scripting process with Luatool and put it all together with a basic TCP server that can interact with a pulse-width modulated LED, a potentiometer, and a switch.

July 22, 2015 by Patrick Lloyd