This is a simple square-wave generator that basically uses the TimerOne library allow you to generate a PWM signal at pin 9.

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.

Verilog quick learning. Feasibility model creation. Accurate logic volume estimation. I2C connection. Education purpose.

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.

Start coding online with the Arduino Web Editor, save your sketches in the cloud, and always have the most up-to-date version of the IDE!

Improved version of the soldering iron controller for Hakko 907 iron. To simplify building the controller, LCD screen is implemented.

DIY Arduino hot air SMD rework station.

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.

Need fast cheap laser rangefinder for your Arduino project? You can use a laser tape measure for this!

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

Arbitrary waves can be drawn, edited, saved, opened and uploaded to the Due via USB, or the Due can run alone controlled by pots & switches.

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.

If you need to debug your Arduino WifiNINA project remotely, plot charts of monitoring data, and more, this is the project for you...

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

An unofficial tutorial for getting started with the MKR1000 board as there are no official one yet.