In this tutorial you’ll learn how to use ESP-NOW communication protocol to send data from one ESP8266 NodeMCU board to multiple ESP8266 boards (one-to-many configuration). The boards will be programmed …
Learn how to establish a two-way communication between two ESP8266 NodeMCU boards using ESP-NOW communication protocol. As an example, two ESP8266 boards will exchange DHT sensor readings. We’ll use Arduino …
In this guide, you’ll learn how to make HTTP POST requests using the ESP8266 NodeMCU board with Arduino IDE. We’ll demonstrate how to post JSON data or URL encoded values …
In this guide, you’ll learn how to make HTTP GET requests using the ESP8266 NodeMCU board with Arduino IDE. We’ll demonstrate how to decode JSON data from OpenWeatherMap.org and plot …
Learn how to publish temperature and humidity readings from a DHT11 or DHT22 sensor via MQTT with the ESP8266 NodeMCU to any platform that supports MQTT or any MQTT client. …
Learn how to publish DS18B20 temperature readings via MQTT with the ESP8266 (NodeMCU) to any platform that supports MQTT or any other MQTT client. As an example, we’ll publish sensor …
Learn how to publish BME280 sensor readings (temperature, humidity and pressure) via MQTT with the ESP8266 to any platform that supports MQTT or any MQTT client. As an example, we’ll …
This tutorial is a step-by-step guide that covers how to build a standalone ESP32 or ESP8266 NodeMCU Web Server that controls any relay module. We’ll create an ESP32/ESP8266 Web Server …
Learn how to program the ESP32 or ESP8266 boards with MicroPython to publish DHT11 or DHT22 sensor readings (temperature and humidity) via MQTT to any platform that supports MQTT or …
In this guide, you’ll learn how to make HTTP GET and HTTP POST requests with the ESP8266 NodeMCU board with Arduino IDE. We’ll cover examples on how to get values, …
In this tutorial you’ll learn how to get date and time from an NTP server using the ESP8266 NodeMCU with Arduino IDE. Getting date and time is useful in data …
In this getting started guide you’ll learn how to read digital inputs like a button switch and control digital outputs like an LED using the ESP8266 NodeMCU board with Arduino …
In this article, we’ll show you how you can use ESP-NOW to exchange data between ESP8266 NodeMCU boards programmed with Arduino IDE. ESP-NOW is a connectionless communication protocol developed by …
Learn how to establish a Wi-Fi communication (HTTP) between two ESP8266 NodeMCU boards to exchange data without the need to connect to the internet (you don’t need a router). You’re …