Random Nerd Tutorials
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How to install phpLiteAdmin Database in a Raspberry Pi

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In this blog post I’ll introduce you to phpLiteAdmin which is a web-based user interface written in PHP that makes it easy to interact with SQLite databases.

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9 Biometric Sensors Arduino Compatible

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In this post I’ll share with you a list of 9 biometric sensors Arduino compatible that you can use in your bioengineering experiments. These are great for hobbyist projects since most of them are easy to deal with. Here’s the list:

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SQLite Database on a Raspberry Pi

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In this blog post I’ll introduce you to SQLite, which is an in-process light weight library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world and its source code is in the public domain.

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Raspberry Pi Publishing MQTT Messages to ESP8266

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In this project you’ll create a standalone web server with a Raspberry Pi that can toggle two LEDs from an ESP8266 using MQTT protocol. You can replace those LEDs with any output (like a relay that controls a lamp).

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Testing Mosquitto Broker and Client on Raspbbery Pi

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In this post you’re going to test the Mosquitto Broker and Client on a Raspberry Pi by subscribing to an MQTT topic and publishing sample messages.

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How to Install Mosquitto Broker on Raspberry Pi

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In this post you’re going to install the Mosquitto Broker on a Raspberry Pi. The broker is primarily responsible for receiving all messages, filtering the messages, decide who is interested in it and then publishing the message to all subscribed clients.

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What is MQTT and How It Works

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In this post, I’m going to introduce you to the MQTT protocol. MQTT stands for MQ Telemetry Transport. It is a nice lightweight publish and subscribe system where you can publish and receive messages as a client.

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ESP8266 OTA Updates with Arduino IDE | Over the Air

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OTA (Over the Air) update is the process of loading a new firmware to ESP8266 module using WiFi connection rather than a serial communication. This type of functionality is extremely useful in case of no physical access to the ESP module.

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Getting Started with ESP32 Dev Module

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This is a getting started guide for the ESP32 Dev Module. If you’re familiar with the ESP8266, the ESP32 is its sucessor. The ESP32 is loaded with lots of new features the two most important: it combines WiFi and Bluetooth wireless capabilities and it’s dual core.

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Installing the ESP32 Board in Arduino IDE (Mac and Linux instructions)

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The ESP32 is currently being integrated with the Arduino IDE just like it was done for the ESP8266, but not everything is working at the moment (see here). This add-on for the Arduino IDE allows you to program the ESP32 using the Arduino IDE and its programming language. If you like the ESP32, you might also enjoy reading all my ESP8266 […]

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Installing the ESP32 Board in Arduino IDE (Windows instructions)

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The ESP32 is currently being integrated with the Arduino IDE just like it was done for the ESP8266, but not everything is working at the moment (see here). This add-on for the Arduino IDE allows you to program the ESP32 using the Arduino IDE and its programming language. If you like the ESP32, you might also enjoy reading all my ESP8266 […]

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20 Free Guides for Arduino Modules and Sensors

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The Arduino community has created a wide variety of modules and sensors that can enhance your projects. Here’s the ultimate collection of 20 free guides for Arduino Modules and Sensors that can help you get started with them. Let’s start!

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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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Reprogram Sonoff Smart Switch with Web Server

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In this post, you’re going to learn how to flash custom firmware in the Sonoff device, so that you can control it with your own web server. I recommend that you read my previous post to get familiar with the Sonoff.

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