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 Read Your Power Meter

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

How to Prototype Electronics Projects

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

Electronics

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

Electronics Fundamentals

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

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 Electronics Articles

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.

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.

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.

How to Understand Electronics Signals and Flow for Beginners

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

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.

When you mix programming and electronics together you get fun.

Electronics and Programming Guides

Efundies.com - Electronics, Gardening, Programming

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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.

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**.

Mosquitto is one of the most popular open source MQTT brokers.

How To Set Up An MQTT Broker with Mosquitto

There are a few options to get your MQTT broker up and running, including Dockers and bare-metal installations. Let's talk about some of the most common ways to get your MQTT broker ready to go.

C# Text File

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

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.

Learning Linux will help you with many different home automation projects.

Linux

When you get interested in home automation, you are eventually going to want to learn Linux.

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.

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.

AVR Port Output in C

Port output on an AVR microcontroller is very flexible. We show you how to configure each register.

An MQTT broker helps glue your home automation systems together.

How To Choose an MQTT Broker: Mosquitto vs HiveMQ vs Home Assistant

When it comes time to choose an MQTT broker, you have a few choices. Let's check out the pros and cons of Mosquitto, HiveMQ, and Home Assistant's built-in MQTT broker.

Docker is an essential service on your home automation server

Install Docker on Your Home Automation Server: 4 Different Ways

There are many different ways to install Docker for Home Automation. Let's talk about some of the ways that you can install Docker on your home automation server.

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.

How To Quickly Create a OneNote Page from the Command Line

OneNote is a great tool for organizing your thoughts and keeping track of your work, and you can create a OneNote page directly from the command line.

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.

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.

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.

C# Switch

A switch statement in C# is a great way to switch between options.

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.

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.

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.

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.

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 Set Up STK500 Jumper Settings for AVR Programming

Make sure that you have the STK500 user guide on hand, you are going to need it.

MQTT is the easiest way to get IoT devices communicating.

What is MQTT and Why You Need It (How to Automate Anything)

MQTT is a protocol that allows devices to communicate with each other in a simple and efficient way.

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.

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.

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

Resistors in Series

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

How to Understand Electronics Signals and Flow for Beginners

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

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 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.

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.

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.

NodeMCU is one of our go-to chips for tackling various home automation projects.

NodeMCU

We use NodeMCU boards for almost every aspect of home automation. These inexpensive little power-houses can solve many home automation problems.

What is a binary program file

What is a Binary Program File

We cover what binary program files are and where you should put them on your computer

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.

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#.

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.

Resistors in Parallel

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

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.