This guide shows how to save data permanently on the ESP32 flash memory using the Preferences.h library. The data held in the flash memory persists across resets or power failures. …
In this tutorial, you’ll learn how to build an ESP32 web server to serve files from a microSD card using a microSD card module that communicates using SPI protocol. You’ll …
This article is a compilation of useful Wi-Fi functions for the ESP32. We’ll cover the following topics: scan Wi-Fi networks, connect to a Wi-Fi network, get Wi-Fi connection strength, check …
This quick guide shows how you can reconnect your ESP32 to a Wi-Fi network after losing the connection. This can be useful in the following scenarios: the ESP32 temporarily loses …
This quick guide shows how to get epoch/unix time using the ESP32 board with Arduino IDE. Getting the epoch time can be useful to timestamp your readings, give unique names …
In this project we’ll build a web server with the ESP32 to display readings from the MPU-6050 accelerometer and gyroscope sensor. We’ll also create a 3D representation of the sensor …
In this guide you’ll learn how to use the MPU-6050 accelerometer and gyroscope module with the ESP32. The MPU-6050 IMU (Inertial Measurement Unit) is a 3-axis accelerometer and 3-axis gyroscope …
Learn how to upload files to the ESP32 board filesystem (SPIFFS) using VS Code with the PlatformIO IDE extension (quick and easy). Using the filesystem with the ESP32 can be …
In this project, you’ll learn how to build a Weather Station Interface PCB Shield for the ESP32 development board. The PCB features a BME280 temperature, humidity and pressure sensor, a …
Learn how to use ESP-MESH networking protocol to build a mesh network with the ESP32 and ESP8266 NodeMCU boards. ESP-MESH allows multiple devices (nodes) to communicate with each other under …
Learn how to publish BME680 sensor readings (temperature, humidity, pressure and gas air quality) via MQTT with the ESP32 to any platform that supports MQTT or any MQTT client. As …
This guide shows how to connect the TTGO T-Call ESP32 SIM800L board to the Internet using a SIM card data plan and publish/subscribe to a cloud MQTT broker without using …
This tutorial shows how to use Server-Sent Events (SSE) in an ESP32 Web Server programmed with Arduino IDE. SSE allows the browser to receive automatic updates from a server via …
In this tutorial you’ll learn how to build a web server with the ESP32 using WebSocket communication protocol. As an example, we’ll show you how to build a web page …