Electronics

Efundies Staff

September 01, 2022 (Last Updated: March 06, 2023) | Reading Time: About 1 minute

We think that learning electronics should be fun.

We have a variety of projects that use AVR, Arduino, MQTT, home-automation, and other technologies to bring your electronics projects to life.

Electronics topics include chips, capacitors, resistors, transistors, and building circuit boards.

Suggested Electronics Articles

Electronics and Programming Guides

Efundies.com - Electronics, Gardening, Programming

How to Understand Electronics Signals and Flow for Beginners

Signals and Systems is a common term that is used to refer to system design.

How to Prototype Electronics Projects

When experimenting with electronics, it is usually best to practice in what is called a Solderless Breadboard.

How to Read Your Power Meter

Learn how to read your power meter and measure the energy consumption of various devices in your home.

Electronics Fundamentals

Learn all about resistors, capacitors, and transistors in our collection of Electronics Fundamentals articles.

Electronics

Our collection of electronics articles helps you get started in home automation and circuit building.

More Electronics Articles

RSR solderless breadboard

How to Prototype Electronics Projects

When experimenting with electronics, it is usually best to practice in what is called a Solderless Breadboard.

Some common components include capacitors and resistors, as well as transistors, LED displays, and chips.

Electronics Fundamentals

Learn all about resistors, capacitors, and transistors in our collection of Electronics Fundamentals articles.

When you mix programming and electronics together you get fun.

Electronics and Programming Guides

Efundies.com - Electronics, Gardening, Programming

Analog power meter reading

How to Read Your Power Meter

Learn how to read your power meter and measure the energy consumption of various devices in your home.

Electronics topics include chips, capacitors, resistors, transistors, and building circuit boards.

Electronics

Our collection of electronics articles helps you get started in home automation and circuit building.

How to Understand Electronics Signals and Flow for Beginners

Signals and Systems is a common term that is used to refer to system design.

More from Efundies

How to Darken an Image in C#

In order to darken an image in C# you need to look at each pixel one at a time and decrease it's red, green, and blue values.

C# Text File

There is a static object called "File" (located in System. IO) that does all the hard work for you.

Begining Circuit Analysis and Ohms Law

For simple circuits this is pretty easy. For complex circuits it can be amazingly hard, even for pros.

How to Replace A Color in an Image with C#

Sometimes you need to replace one color in an image with another color. C# makes it easy.

Resistors in Series

When you wire resistors in series, you can simply add their values together to get the new equivalent reistance.

Resistors in Parallel

Learn how to calculate the equivalent resistance of two resistors when they are wired in parallel.

Your home automation server can run many different operating systems, including Ubuntu, Proxmox, Unraid, and TrueNAS.

Unraid vs Proxmox vs Ubuntu - Battle For the Best Home Network Server OS

When it comes time to put an operating system on your home network server, you've got a few options.

Node-RED makes writing home automations fast and easy.

Node-RED

Node-RED is the easiest way to manage your home automation rules. It couples well with Home Assistant and is much easier to program.

How to Read a Schematic - Common Schematic Symbols

There are about 10 that you should memorize, and the rest you can look up. Here we will show you some common schematic symbols and give a brief description of them.

How to Lighten an Image in C#

In order to lighten an image in C# you need to look at each pixel one at a time and increase it's red, green, and blue values.

What are Transistors and How do They Work?

With the transistor we introduce the first 3 legged device. Transistors come in many varieties, shapes and sizes.

Here’s a closeup of how we wired our IRF520 modules. You can see that the power to the modules is in parallel.

MIDI Controlled Solenoids with Arduino and Ableton Live - Part 1

At the end of the series you will have a setup that is capable doing this. This is a pretty complex topic so it is split into 3 parts to make it easier to follow.

How to compile ncmpcpp on CentOs 8

If you are new to compiling applications on Linux then this can be a bit daunting the first time you do it.

How to Implement AVR Timer Interrupts in C for Atmel Microcontrollers

Timer interrupts are an excellent way of having your AVR do something at a given interval.

The newest addition to the Windows command prompt experience, Windows Terminal, is the best choice for most people.

Windows Command Prompt vs PowerShell

When it comes to comparing Windows Command Prompt and PowerShell, there are a few key differences.

Introduction to the Command Line Interface: A Beginners Guide to Using the CLI

Introduction to the Command-Line Interface for Beginners

The command-line interface is a text-based interface that allows you to interact with your computer.

C#: How to Use HTML Colors in Your Code

The .Net framework has a great object for dealing with colors called Color that we use to deal with HTML color codes.

Scale an Image in C# Preserving Aspect Ratio

If you need to change the size of an Image without changing the ratio of X to Y then this article tells you how.

AVR Port Input in C

### Connect PortB To Switches Remember how we connected **PORTA** to the **LEDS**. Now we are going to connect **PORTB** to the **SWITCHES**.

Personal binary executable directory

Make a Personal Binary Directory on Your Computer

If you want to keep your computer organized, it's a good idea to create a personal binary directory.

Perl may be an old language, but it is still the glue that holds many projects together.

Perl

Perl is one of the most common glue languages available on Linux. It is useful in home automation for quick scripts as well as complex processes.

433 Mhz hardware can extend your home automation.

433 Mhz Radio Transmitters

433 Mhz radio transmitters are available everywhere and they are usually very inexpensive. With a little bit of programming we can make them do anything we want.

This MIDI controller can be used to play music, write tracks in a DAW, or just about any home automation you can think of.

MIDI

You can use MIDI to write songs, play music, control games, or even control your home automations.

You can get started programming with a simple setup. All it takes is a laptop and a cup of coffee.

Programming: Tips and Tricks

A collection of tips, tricks, and snippets of code for a variety of programming languages, including C#, AVR, Arduino, and Perl.

If you want to conIf you want to connect to your MQTT broker from the internet, then you need to forward a port in your router.

Connect to Your MQTT Broker from the Internet: Port Forwarding MQTT

If you want to connect to your MQTT broker from the internet, then you need to forward a port in your router

How to Select the Right Resistor for Your Circuit: A Fundamentals Guide

The most important component to understand in electronics is the resistor.

AVR chips come in many different sizes and shapes. Pictured is a PLCC socket.

AVR

The AVR microprocessor is the heart of most Arduinos. Instead of using the Arduino libraries, you can learn to program this chip directly with C++.

This modern LED lightbulb consumes 1/10th the energy of old-school incandescent bulbs.

Electricity

Follow our electricity guides to learn how to read your power meter, save energy, and measure the power usage of various devices in your home.

How to Adjust the Contrast of an Image in C#

Adjusting the contrast of an image in C# is an easy operation because it can be done on a single pixel at a time.

MIDI Controlled Solenoids with Arduino and Ableton Live - Part 2

This is part 2 in a 3 part series that shows how to make Ableton Live play music on electric solenoids using an Arduino.

Some common components include capacitors and resistors, as well as transistors, LED displays, and chips.

Electronics Fundamentals

Learn all about resistors, capacitors, and transistors in our collection of Electronics Fundamentals articles.

Analog power meter reading

How to Read Your Power Meter

Learn how to read your power meter and measure the energy consumption of various devices in your home.

AVR Port Input Logic

In this guide we will write a program in C that makes some decisions based on the state of input pins.

If you have to move massive amounts of data, then you should be thinking about Robocopy and rsync.

How to Move Massive Amounts of Data Safely and Efficiently

If you're dealing with a large amount of data, you need to make sure you're moving it safely and efficiently. Here are some tips on how to do just that.

MQTT is the backbone of many home automation systems.

MQTT

MQTT is the backbone of many home automation systems. We consider MQTT to be the most important part of your home automation system.

Image Processing in C#: A Comprehensive Guide

C# is a great language to do image processing in. It's fast and easy to handle complex image manipulations with it.

C# is a programming language created by Microsoft as a direct competitor to Java.

C# (C-Sharp) Programming Language - Tutorials, Code Examples, and More

C# is an amazing language that is built for speed and fast development time. Learn how to manipulate images with C#.

Convert an Image to Gray Scale in C# - A Quick and Easy Guide

Sometimes you need to take a color image and remove all of the color from it leaving just shades of gray. There are 3 common ways of performing this calculation, each yielding slightly different results.

How to Create a WinAVR C Skeleton File

If you are New To C then you can consider this a crash course introduction to the language.

You can see that the MIDI data generated in Ableton Live flows into the USB port of an Arduino, where it is used to control solenoids.

MIDI Controlled Solenoids with Arduino and Ableton Live - Part 3

This is the 3rd and final part in a 3 part series about how to control solenoids using Ableton Live and an Arduino.