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Understanding the 12-Term Error Model and SOLT Calibration Method for VNA Measurements

Understanding the 12-Term Error Model and SOLT Calibration Method for VNA Measurements

The 12-term error model is a simple, effective way of modeling systematic errors in vector network analyzer (VNA) measurements. Learn about this model and an associated error correction technique in this article.


Transmission Line Theory: Observing the Reflection Coefficient and Standing Wave

Transmission Line Theory: Observing the Reflection Coefficient and Standing Wave

Learn about radio frequency (RF) wave propagation and reflection via transmission lines, equations, and example waveforms.


Guide to USB-C Pinout and Features

Guide to USB-C Pinout and Features

This introductory article will look at some of the most important features of the USB-C standard.


Breadboarding and Programming the ATmega328P & ATtiny45 in Atmel Studio 7

Breadboarding and Programming the ATmega328P & ATtiny45 in Atmel Studio 7

In this project, we'll build circuits for programming two different Atmel microcontrollers and we'll discuss the necessary software setup.


Build Your Own LED Saber—Assembly and Hilt Construction

Build Your Own LED Saber—Assembly and Hilt Construction

In the final installment, we build our light-blade and assemble the electronics into the hilt.


Projects Oct 21, 2016 by Jeremy Lee
Building an RC Robot Using a Wheelchair Base

Building an RC Robot Using a Wheelchair Base

This two-part project will begin by showing you how to create a robot base from a used electric wheelchair. Part 1 creates a simple robot platform for use with remote control. Part 2 will develop a platform for use with and Arduino.


Projects Jul 06, 2016 by Mark Hughes
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
Learning PLCs on a Budget

Learning PLCs on a Budget

Typically, getting started with a PLC can be a costly endeavor, but this project will show how to get started with them on a small budget!


Projects Jan 18, 2016 by Alex Udanis