Random Nerd Tutorials
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Category Archives for Tutorials

Arduino – Control 2 DC Motors Via Bluetooth (Perfect To Build a Robot)

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In this tutorial I’ll show you how to control 2 DC motors via bluetooth with an Android app created with MIT App Inventor 2. MIT App Inventor is a great platform to get you started with Android development.

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Guide for TCS230/TCS3200 Color Sensor with Arduino

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This post shows you how to detect colors with the Arduino using the TCS230/TCS3200 color sensor. The TCS3200 color sensor can detect a wide variety of colors based on their wavelength. This sensor is specially useful for color recognition projects such as color matching, color sorting, test strip reading and much more.

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Build Robot Car Chassis Kit – Arduino

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In this post you’re going to learn how to build a robot car chassis kit that is commonly used with the Arduino board. You can either watch the video tutorial or follow the written instructions. Throughout this post, we’ll be assembling a Smart Robot Car Chassis Kit that can be found on eBay.

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Arduino Ethernet Web Server with Relay

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This posts shows how to build an Arduino Ethernet web server that controls a relay that is attached to a lamp. You can access your web server with any device that has a browser and it’s connected to the same network.

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Guide for Relay Module with Arduino

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This post shows how to use a relay module with your Arduino. It starts by demonstrating how to connect the relay to mains voltage and to the arduino. Then, you’ll have an example on how to control a lamp with a relay module and a PIR motion sensor.

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Guide for the Tilt Sensor (inclinometer) with Arduino

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This post shows how to use the tilt sensor module with the Arduino. The tilt sensor is many times referred to as inclinometer, tilt switch or rolling ball sensor. Using a tilt sensor is a simple way to detect orientation or inclination.

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Guide for Microphone Sound Sensor with Arduino

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This post shows how to use the microphone sound sensor with the Arduino board.

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Guide for Real Time Clock (RTC) Module with Arduino (DS1307 and DS3231)

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This post is about how to use the DS1307 Real Time Clock (RTC) module with the Arduino. You can also follow this guide for other similar modules like the DS3231 RTC.

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Guide for WS2812B Addressable RGB LED Strip with Arduino

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This post is about the WS2812B LED strip, which is an addressable RGB LED strip. The information in this post also works with other similar LED strips, such as strips of the WS28XX family, Neopixel strip and others.

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Guide for 8×8 Dot Matrix MAX7219 with Arduino + Pong Game

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The dot matrix that we’re going to use in this guide is a 8×8 matrix which means that it has 8 columns and 8 rows, so it contains a total of 64 LEDs. The MAX7219 chip makes it easier to control the dot matrix, by just using 3 digital pins of the Arduino board. I think the […]

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Guide for MQ-2 Gas/Smoke Sensor with Arduino

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This guide shows how to build a smoke detector that beeps when it detects flammable gas or smoke.

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Security Access using MFRC522 RFID Reader with Arduino

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This blog post shows a simple example on how to use the MFRC522 RFID reader. I’ll do a quick overview of the specifications and demonstrate a project example using an Arduino.

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Monitor Your Door Using Magnetic Reed Switch and Arduino

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This tutorial demonstrates how to use a magnetic reed switch. I’ll do a quick overview on how it works and show a project example using an Arduino.

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Why You Shouldn’t Always Use the Arduino Delay Function

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The very first time you used an Arduino board, you probably did something like this: Connected an LED to your Arduino Uploaded the default blink sketch that would turn on and off your LED every second

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