ESP32 Relay Module – Control AC Appliances (Web Server)
Using a relay with the ESP32 is a great way to control AC household appliances remotely. This tutorial explains how to control a relay module with the ESP32. We’ll take …
ESP32 Projects
ESP32 LoRa Sensor Monitoring with Web Server (Long Range Communication)
In this project, you’ll build a sensor monitoring system using a TTGO LoRa32 SX1276 OLED board that sends temperature, humidity and pressure readings via LoRa radio to an ESP32 LoRa …
TTGO LoRa32 SX1276 OLED Board: Getting Started with Arduino IDE
The TTGO LoRa32 SX1276 OLED is an ESP32 development board with a built-in LoRa chip and an SSD1306 0.96 inch OLED display. In this guide, we’ll show you how to: …
EXTREME POWER SAVING (0µA) with Microcontroller External Wake Up: Latching Power Circuit
In this tutorial, we’ll show you how to build an Auto Power Off circuit (Latching Power Circuit) on a custom PCB, which is extremely useful to save power in your …
ESP32 I2C Communication: Set Pins, Multiple Bus Interfaces and Peripherals (Arduino IDE)
The ESP32 has two I2C bus interfaces that can serve as I2C master or slave. In this tutorial we’ll take a look at the I2C communication protocol with the ESP32 …
ESP32 Pinout Reference: Which GPIO pins should you use?
The ESP32 chip comes with 48 pins with multiple functions. Not all pins are exposed in all ESP32 development boards, and there are some pins that cannot be used.
ESP32 SIM800L: Send Text Messages (SMS Alert) with Sensor Readings
In this project we’re going to create an SMS notification system with the T-Call ESP32 SIM800L module that sends an SMS when sensor readings are above or below a certain …
ESP32 Publish Data to Cloud without Wi-Fi (TTGO T-Call ESP32 SIM800L)
This project shows how to connect the TTGO T-Call ESP32 SIM800L board to the Internet using a SIM card data plan and publish data to the cloud without using Wi-Fi. …
Input Data on HTML Form ESP32/ESP8266 Web Server using Arduino IDE
In this guide, you’ll learn how to create an ESP32/ESP8266 web server with three input fields to pass values to your ESP using an HTML form. Then, you can use …
ESP32 Built-In Hall Effect Sensor with Arduino IDE and MicroPython
The ESP32 development board features a built-in hall effect sensor that detects changes in the magnetic field in its surroundings. This tutorial shows how to use the ESP32 hall effect …
ESP32 DHT11/DHT22 Web Server – Temperature and Humidity using Arduino IDE
In this project, you’ll learn how to build an asynchronous ESP32 web server with the DHT11 or DHT22 that displays temperature and humidity using Arduino IDE. The web server we’ll …
ESP32 Web Server with BME280 – Advanced Weather Station
In this tutorial you’re going to learn how to create a web server with the ESP32 to display readings from the BME280 sensor module. The BME280 sensor measures temperature, humidity, …
ESP32/ESP8266 Plot Sensor Readings in Real Time Charts – Web Server
Learn how to plot sensor readings (temperature, humidity, and pressure) on a web server using the ESP32 or ESP8266 with Arduino IDE. The ESP will host a web page with …
ESP32 DS18B20 Temperature Sensor with Arduino IDE (Single, Multiple, Web Server)
This is a in-depth guide for the DS18B20 temperature sensor with ESP32 using Arduino IDE. We’ll show you how to wire the sensor, install the required libraries, and write the …