8 lines of code to setup and 1 line of code per variable for the Arduino, no programming on the PC side. USB-WiFi-Ethernet-Serial.

You'll learn how to create an automation system to communicate 3 Arduinos via RS485.

Implementing switches can be troublesome. This article offers a solution for configuring many mixed type switches at the same time.

Mastering the short comings of simple button switches. The fundamentals everyone should know.

3-channel voltmeter with the ability to measure both negative & positive voltages on the same circuit or 3 different circuits simultaneously

An example sketch that will read a simple toggle switch reliably, irrespective of the circuit design.

There are numerous examples of how to connect button switches via an external interrupt. This example offers an alternative approach.

Step by step on how to program a ATtiny85 microcontroller with Arduino Uno development board.

Sketch of transistor tester project from Karl-Heinz Kübbeler, so it's much simpler to study, modify, verify and upload to an Arduino.

Learn how to submit your Arduino-based project. It may even get featured on the Arduino social channels!

FreeRTOS, simple, easy to use, robust, optimised for Arduino IDE. Full access to FreeRTOS capabilities, within classic Arduino environment.

A time switching battery powered solar charged circuit, used to power an Arduino Uno and some peripherals.

Clock LCD display adjustable.

Make your hardware push data to a Google spreadsheet.

Regulated smart constant current charger for 9V NiMH rechargeable batteries.

Arduino's great, but how in the world do you do two (or more) things at once on separate intervals? You need protothreading!

We used a TI FDC1004 breakout with an Arduino to measure liquid level in a bottle using the capacitance between two adhesive copper strips.

Program your Arduino with an Android device over Bluetooth HC05.

In this tutorial, I will show you how to install the dark theme for your Arduino IDE for the reason of overexposure to the screen light.

Logic Analyzer, for Arduino, other AVR and STM32 with a very nice working processing interface, you could run it also on any Android device.

If you can't find a voltmeter at home or anywhere else, then this hack is for you!

Simple Arduino Uno - ESP8266 software serial integration.

With modern I2C Protocol for the LCD, minimizing the wiring. A Basic Version with the Arduino UNO and a feature rich Version with the MEGA.

Using a phone as a makeshift GSM module.