Random Nerd Tutorials
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Category Archives for Tutorials

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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Arduino Serial Plotter – New Tool

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The latest release of the Arduino IDE 1.6.6 comes with a new tool called Serial Plotter. This tools gives you the ability to visualize your data in a plot that is updated in real time.

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Sending Data From an Arduino to the ESP8266 via Serial

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In this tutorial you’re going to learn how to send data from an Arduino to the ESP8266 via serial communication.

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Complete Guide for Nokia 5110 LCD with Arduino

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This post aims to be a complete guide for Nokia 5110 LCD with Arduino. I’ll explain what it does, show its specs and share an Arduino project example that you can take and apply to your own projects.

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Complete Guide for nRF24L01 – 2.4GHz RF Transceiver Module With Arduino

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This post aims to be a complete guide for nRF24L01 – 2.4GHz RF Transceiver module. I’ll explain what it does, show its specs and share an Arduino project example that you can take and apply to your own projects.

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