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Arduino Tutorial

Arduino tutorials

A collection of Arduino tutorial articles, from newest to oldest. These tutorials are compiled from personal to paid projects and university lectures. See Arduino Tutorials page if you want to learn from basics to advanced.

The Arduino simplifies microcontroller programming through easy to use code, software and hardware. The best way to learn Arduino is by building projects so start by trying these Arduino tutorials and improve them!

Using AD9833 Signal Generator with Arduino

Arduino AD9833 signal generator

Ever wondered how you can create sine, square or triangular waves with Arduino? Apparently, there’s a way with the help of an integrated circuit package called AD9833. With it, you can now create waveforms for communications, instrumentation or other related projects. My tutorial on building your own Arduino signal generator …

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Watchdog Timer on Arduino Tutorial

Arduino watchdog timer interrupt

In Arduino programming, we learn about functions setup() and loop(). Any code inside setup() executes once while code inside loop() executes again and again until the next reset. Now what if while inside the loop(), something went wrong either in code or in hardware? Normally we just press the reset …

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How to Use Load Cell with HX711 and Arduino

HX711 Load Cell

Measuring an object’s weight can sometimes be part of a bigger project. And unless you have a good reason, you wouldn’t want to use an analog weighing scale. A digital weight sensor is easier to interface with, not to mention its accuracy and durability against an analog weight sensor. In …

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How pinMode, digitalWrite and digitalRead Work

arduino digital input

I believe what makes Arduino popular is how it makes microcontrollers easier to use. I remember the time when I have to spent hours coding a project and then spend money on programming hardware. Arduino has its limitations, but the platform helps create tons of electronic projects even for non-engineers. …

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MQ-135 Air Quality Sensor Tutorial

MQ-135 breakout board

The MQ-135 “air quality” sensor is part of the MQ series of gas sensors that uses a chemical sensitive element. The resistance of such element varies when exposed to certain gases. The MQ-135 is sensitive to multiple gases including Benzene, Acetone, Alcohol and Ammonium.

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