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

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

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.

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.

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.

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

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.

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.

A small device that will help you sorting resistors without wasting time with their color code.

I want to make a CD spot welder for battery packs or other stuff that cannot be soldered.

An Arduino powered floppy disk controller and reader/writer for making and writing disk images from and to old AmigaDOS floppy disks.

The soldering iron controller based on arduino that implements PID method to keep the temperature of the iron.

This is a tutorial on how to make it work.

An ultimate tutorial for beginners on how to connect and use an ESP8266 via Arduino and program it to blink an LED using the Blynk app.

Get not only 5 volts but also 9, 12 volts (18 Watts max) out of any QC-compatible charger/power bank for supplying power hungry projects.

Things you should know using ESP8266 WiFi module for its safety and easiness as it's very delicate module to use.

The cheapest micro soldering station in the world, using a cheap USB soldering iron.

Calibrating Atlas Scientific's EZO pH sensor using Arduino Uno.