Latest Technical Articles

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…

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.

Do you need GPS time on your desk? This article will show you how to use a GPS module to get time, date and your location…

Do you need GPS time on your desk? This article will show you how to use a GPS module to get time, date and your location displayed on an LCD with an Arduino.

A simple “break-the-feedback-loop” simulation technique makes for convenient stability analysis, especially with…

A simple “break-the-feedback-loop” simulation technique makes for convenient stability analysis, especially with complex circuits.

A introduction to adaptive echo cancellers using Matlab simulation.

A introduction to adaptive echo cancellers using Matlab simulation.

The techniques discussed in previous articles can help us to understand and remedy stability problems observed in a…

The techniques discussed in previous articles can help us to understand and remedy stability problems observed in a common circuit used to amplify photodiode signals.

Amateur radio operators ("hams") have long said, "If you want a bigger signal, put up more metal and put it up higher."…

Amateur radio operators ("hams") have long said, "If you want a bigger signal, put up more metal and put it up higher." Antennas for Wi-Fi are no exception.

Build an Arduino controlled power supply that automatically adjusts the output to maintain a constant voltage or a…

Build an Arduino controlled power supply that automatically adjusts the output to maintain a constant voltage or a constant current.

There are all sorts of batteries out there- this short overview will help you find the right one!

There are all sorts of batteries out there- this short overview will help you find the right one!

Getting more familiar with a PIC MCU is a matter of working more often with it. Learn how to make a wireless thermometer…

Getting more familiar with a PIC MCU is a matter of working more often with it. Learn how to make a wireless thermometer with a PIC microcontroller.

This is the final part in a series of articles on building a robot that can follow lines or walls and avoid obstacles!

This is the final part in a series of articles on building a robot that can follow lines or walls and avoid obstacles!

An introduction to the least mean squares algorithm and adaptive gain control through a simple example.

An introduction to the least mean squares algorithm and adaptive gain control through a simple example.

This article will help you to understand why the frequency response of a feedback network can seriously, and sometimes…

This article will help you to understand why the frequency response of a feedback network can seriously, and sometimes unexpectedly, degrade stability.

Delving further into the transmission line concept, the boundary between treating the line as a single lumped circuit…

Delving further into the transmission line concept, the boundary between treating the line as a single lumped circuit element and using the distributed circuit parameters is investigated with a simple analysis in python. Circuit parameters for multiple waveguide geometries are shown.

This article will show you a handy alternative approach to assessing stability via open-loop gain and the feedback factor.

This article will show you a handy alternative approach to assessing stability via open-loop gain and the feedback factor.

This article will show you how to set up two way communication between an Arduino and your Android Smartphone using Bluetooth.

This article will show you how to set up two way communication between an Arduino and your Android Smartphone using Bluetooth.

Let's delve into AC power concepts, how to calculate instantaneous power, average power, reactive power, complex power,…

Let's delve into AC power concepts, how to calculate instantaneous power, average power, reactive power, complex power, and the power factor. We'll also talk about the relationship each concept has to one another.

Programmable thermostats can save a lot of energy and money. But you don't have to buy one- you can convert an old…

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.

The buck converter is a ubiquitous DC-DC converter that efficiently converts a high voltage to a low voltage efficiently.…

The buck converter is a ubiquitous DC-DC converter that efficiently converts a high voltage to a low voltage efficiently. Efficient power conversion extends battery life, reduces heat, and allows for smaller gadgets to be built. The buck converter can be used in lots of cool applications.

Here are some great power conversion topologies that can be used as alternatives to the boost converter; they are much…

Here are some great power conversion topologies that can be used as alternatives to the boost converter; they are much less vulnerable to short circuit load conditions.