After releasing some projects with the ESP32-CAM, some readers reported issues when trying to use the ESP32-CAM. This guide is a compilation with the most common errors when using the …
CONTINUE READING »ESP32-CAM Troubleshooting Guide: Most Common Problems Fixed
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: …
CONTINUE READING »TTGO LoRa32 SX1276 OLED Board: Getting Started with Arduino IDE
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 …
In this project you’ll build an ESP32 or ESP8266 client that makes an HTTP POST request to a PHP script to send an email notification with sensor readings. You can …
CONTINUE READING »ESP32/ESP8266 Send Email Notification using PHP Script
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 …
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.
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 …
CONTINUE READING »ESP32 SIM800L: Send Text Messages (SMS Alert) with Sensor Readings
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. …
CONTINUE READING »ESP32 Publish Data to Cloud without Wi-Fi (TTGO T-Call ESP32 SIM800L)
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 …
CONTINUE READING »Input Data on HTML Form ESP32/ESP8266 Web Server using Arduino IDE
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 …
CONTINUE READING »ESP32 Built-In Hall Effect Sensor with Arduino IDE and MicroPython
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 …
CONTINUE READING »ESP32 DHT11/DHT22 Web Server – Temperature and Humidity using Arduino IDE
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, …
CONTINUE READING »ESP32 Web Server with BME280 – Advanced Weather Station
In this project, you’ll create a web page that displays sensor readings in a plot that you can access from anywhere in the world. In summary, you’ll build an ESP32 …
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 …
CONTINUE READING »ESP32/ESP8266 Plot Sensor Readings in Real Time Charts – Web Server