In this guide, you’ll learn how to send sensor readings with the ESP32 to ThingSpeak. For demonstration purposes, we’ll use a BME280 sensor, but you can easily modify the examples …
This tutorial shows how to build an ESP32 web server that displays a web page with multiple sliders. The sliders control the duty cycle of different PWM channels to control …
There is a new Arduino IDE—Arduino IDE 2. In this tutorial, you’ll learn how to install the ESP32 boards in Arduino IDE 2 and upload code to the board. This …
This project shows how to build a web server with the ESP32 to plot sensor readings in charts with multiple series. As an example, we’ll plot sensor readings from four …
By default, the hostname of the ESP32 is espressif. In this guide, you’ll learn how to set a custom hostname for your board. To set a custom hostname for your …
In this project, we’ll create a status indicator PCB shield for the ESP32 featuring two rows of addressable RGB neopixel LEDs, a BME280 sensor, and a pushbutton. We’ll program the …
In this guide, you’ll learn how to do over-the-air (OTA) updates to your ESP32 boards using the AsyncElegantOTA library and VS Code with PlatformIO. The Async Elegant OTA library creates …
This guide shows how to use a microSD card with the ESP32: you’ll learn how to read and write files to the microSD card. To interface the microSD card with …
In this guide, you’ll learn how to do over-the-air (OTA) updates to your ESP32 boards using the AsyncElegantOTA library. This library creates a web server that allows you to upload …
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 …