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Tutorials

How to Use the MQ-3 Alcohol Sensor

The MQ-3 alcohol sensor is useful for projects that tests levels of alcohol, benzine, hexane or LPG in the air but it is most popularly used as a breathalyzer (breath analyzer) for someone who drank beer, wine or other liquor. Learn how to use this sensor in this tutorial.

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How to Use L298N Motor Driver

L298N Motor Controller Tutorial

You can drive a LED on or off using a microcontroller like Arduino or PIC. There’s no problem there because the 20 mA or so current from the pins is enough. Obviously, you can’t drive loads that require much more current like a motor. This is where the L298N motor …

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STM32 Nucleo Serial Communication

STM32 Nucleo

Debugging through the serial port is one of the ways to find errors on your code. In this tutorial, I'll show you how to add serial communication function to your STM32 Nucleo board.

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Blink a LED with STM32 Nucleo

STM32 Nucleo

On the previous tutorial, we managed to create our first program with the STM32 Nucleo board. Now we will dig deeper on the pinout and other functionalities of the board.

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