ESP32/ESP8266 Web Server: Control Outputs with Timer
In this tutorial you’ll build a web server to control the ESP32 or ESP8266 NodeMCU outputs with a pulse using Arduino IDE. The pulse width (“timer”) can be adjusted using …
ESP32
ESP32/ESP8266 Web Server HTTP Authentication (Username and Password Protected)
Learn how to add HTTP authentication with username and password to your ESP32 and ESP8266 NodeMCU web server projects using Arduino IDE. You can only access your web server if …
ESP-NOW with ESP32: Receive Data from Multiple Boards (many-to-one)
This tutorial shows how to set up an ESP32 board to receive data from multiple ESP32 boards via ESP-NOW communication protocol (many-to-one configuration). This configuration is ideal if you want …
ESP32/ESP8266: Control Outputs with Web Server and a Physical Button Simultaneously
This tutorial shows how to control the ESP32 or ESP8266 outputs using a web server and a physical button simultaneously. The output state is updated on the web page whether …
ESP32/ESP8266 Web Server: Control Outputs with Momentary Switch
This tutorial shows how to create a web server with a button that acts as momentary switch to remotely control ESP32 or ESP8266 outputs. The output state is HIGH as …
ESP-NOW with ESP32: Send Data to Multiple Boards (one-to-many)
In this tutorial, you’ll learn how to use ESP-NOW communication protocol to send data from one ESP32 to multiple ESP32 or ESP8266 boards (one-to-many configuration). The boards will be programmed …
MicroPython: MQTT – Publish DHT11/DHT22 Sensor Readings (ESP32/ESP8266)
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 …
ESP32 HTTP GET and HTTP POST with Arduino IDE (JSON, URL Encoded, Text)
In this guide, you’ll learn how to make HTTP GET and HTTP POST requests with the ESP32 board with Arduino IDE. We’ll cover examples on how to get values, post …
MicroPython: SSD1306 OLED Display Scroll Functions and Draw Shapes (ESP32/ESP8266)
This guide shows additional functions to control an OLED display with MicroPython using the ESP32 or ESP8266. You’ll learn how to scroll the entire screen horizontally and vertically and how …
ESP32 MQTT – Publish DHT11/DHT22 Temperature and Humidity Readings (Arduino IDE)
Learn how to publish temperature and humidity readings from a DHT11 or DHT22 sensor via MQTT with the ESP32 to any platform that supports MQTT or any MQTT client. As …
ESP32 MQTT – Publish BME280 Sensor Readings (Arduino IDE)
Learn how to publish BME280 sensor readings (temperature, humidity and pressure) via MQTT with the ESP32 to any platform that supports MQTT or any MQTT client. As an example, we’ll …
ESP32 Digital Inputs and Digital Outputs (Arduino IDE)
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 ESP32 with Arduino IDE. Prerequisites …
ESP32 MQTT – Publish DS18B20 Temperature Readings (Arduino IDE)
Learn how to publish DS18B20 temperature readings via MQTT with the ESP32 to any platform that supports MQTT or any other MQTT client. As an example, we’ll publish sensor readings …
ESP32 NTP Client-Server: Get Date and Time (Arduino IDE)
Learn how to request date and time from an NTP Server using the ESP32 with Arduino IDE. Getting date and time is useful in data logging projects to timestamp readings. …