ESP8266 NodeMCU: Erase Flash Memory (Factory Reset)
This quick guide provides instructions on how to erase the ESP8266 NodeMCU flash memory to restore it to its original state. We’ll be using a tool called esptool.py. Restoring the …
ESP8266
ESP8266 NodeMCU HTTPS Requests (Arduino IDE)
In this guide, you’ll learn how to make HTTPS requests with the ESP8266 NodeMCU board. We’ll introduce you to some HTTPS fundamental concepts and provide several examples: HTTPS requests without …
ESP8266 NodeMCU: Send Messages to WhatsApp
In this guide, you’ll learn how to send messages to your WhatsApp account with the ESP8266 NodeMCU board. This can be useful to receive notifications from the ESP8266 with sensor …
Firebase: Control ESP8266 NodeMCU GPIOs from Anywhere
In this guide, you’ll learn how to control the ESP8266 GPIOs from anywhere using Firebase. We’ll create nodes on the Firebase Realtime Database to save the current GPIO states. Whenever …
ESP8266 NodeMCU with Load Cell and HX711 Amplifier (Digital Scale)
In this tutorial, you’ll learn how to create a scale with the ESP8266 NodeMCU using a load cell and the HX711 amplifier. First, you’ll learn how to wire the load …
Install ESP8266 NodeMCU LittleFS Filesystem Uploader in Arduino IDE
In this tutorial, you’ll learn how to install the ESP8266 LittleFS Filesystem Uploader Plugin in your Arduino IDE to upload files to the ESP8266 NodeMCU filesystem. If you want to …
ESP8266 NodeMCU with TDS Sensor (Water Quality Sensor)
In this guide, you’ll learn how to use a TDS meter (Total Dissolved Solids) with an ESP8266 NodeMCU board. A TDS meter indicates the total dissolved solids like salts, minerals, …
ESP8266 NodeMCU: K-Type Thermocouple with MAX6675 Amplifier
In this guide, you’ll learn how to read temperature using a K-Type Thermocouple with the MAX6675 amplifier with the ESP8266 NodeMCU board. A K-type thermocouple is a type of temperature …
ESP8266 NodeMCU with BH1750 Ambient Light Sensor
The BH1750 is a 16-bit ambient light sensor. In this guide, you’ll learn how to use the BH1750 ambient light sensor with the ESP8266 NodeMCU board using Arduino IDE. The …
ESP8266 NodeMCU Data Logging to Firebase Realtime Database
In this guide, you’ll learn how to log data with the ESP8266 NodeMCU to the Firebase Realtime Database with timestamps (data logging) so that you have a record of your …
ESP8266 NodeMCU: Create a Wi-Fi Manager (AsyncWebServer library)
In this guide, you’ll create and set up a Wi-Fi Manager with the ESPAsyncWebServer library that you can modify to use with your web server projects or with any project …
What is MQTT and How It Works
In this article, we’re going to introduce you to the MQTT protocol. MQTT stands for Message Queuing Telemetry Transport.
ESP8266 NodeMCU Web Server: Display Sensor Readings in Gauges
Learn how to build a web server with the ESP8266 NodeMCU to display sensor readings in gauges. As an example, we’ll display temperature and humidity from a BME280 sensor in …
ESP8266 NodeMCU Door Status Monitor with Telegram Notifications
In this project, you’re going to monitor the status of a door using an ESP8266 NodeMCU board and a magnetic reed switch. You’ll receive a message in your Telegram account whenever the door …