September 9, 2021
How to connect your Arduino to Wi-Fi

How to connect your Arduino to Wi-Fi

Most of the devices you own can connect to Wi-Fi, but your Arduino sits on its lonesome. If you want to add Wi-Fi to Arduino projects, […]
September 9, 2021
Display characters with LEDs

Display characters with LEDs! How to use a matrix LED

Dot matrix LEDs are standard electronic components for electronics kits. Using these components, you can control a large number of LEDs with just a small number […]
August 29, 2021
LED circuit

The Basics of Arduino: Adjusting LED Brightness

Originally published by Feb 5, 2020 Table of Contents Introduction Brightness cannot be digitally adjusted Changing LED brightness using digital output Adjusting brightness with PWM Making […]
August 29, 2021
arduino preprocessor

Arduino Preprocessor Directives Tutorial

Originally published by Jun 6, 2017 Table of Contents Introduction What do I need to get started? How it works After you press “Upload” Preprocessor basics […]
August 6, 2021
How to control an Arduino from a Windows computer

How to control an Arduino from a Windows computer

Arduino projects make it possible to build your own custom electronics, but that doesn’t mean they can’t interact with your regular gadgets like your laptop or […]
August 5, 2021
nRF24L01+

How to Use the NRF24l01+ Module with Arduino

Originally published by Apr 13, 2017 Table of Contents Introduction Specs Step by Step Guide to Using an NRF24l01+ Module with Arduino Related Articles Introduction Previously, […]
July 1, 2021
How to control your computer using hand gestures

How to control your computer using hand gestures

Scrambling to find the mute key when an annoying video starts playing or when someone walks into your office can be a hassle. You have to […]
June 3, 2021
Enter the Matrix, LED Matrix that is! Create your very own light up LED display with Arduino

Enter the Matrix, LED Matrix that is! Create your very own light up LED display with Arduino

A single LED can be handy in testing Arduino projects. But when you add an LED matrix, you can get really creative, spelling out letters, numbers, […]
May 17, 2021
Keep cats at bay with an auto-trigger water spray and the power of an Arduino Uno

Keep cats at bay with an auto-trigger water spray and the power of an Arduino Uno

If you want to keep the cats off the counter, a squirt bottle is an easy discipline method. However, you can’t always be in the room. […]
February 14, 2021

How to Send IR Commands to Your Project with a Remote Control

You might already know that the remote control for your TV uses infrared light that’s invisible to the naked eye to send coded signals instructing the […]
February 14, 2021

How to Program an RFID Card for Your Projects

RFID tags are small, rewritable chips that can store small amounts of data like names, addresses, product information, and more. They can take the form of […]
February 14, 2021

How to Add a Digital Numerical Display to Your Project

In the past, we’ve shown how to control an LED matrix with an Arduino. However, if your project only needs to show numbers, you might be […]