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08 Sep [SOLVED] DHT11/DHT22 – Failed to read from DHT sensor
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This is a troubleshooting guide for the most common issues with the DHT sensor when using ESP32, ESP8266, Arduino, or similar boards.If you get an error message in your serial Monitor while reading the temperature and humidity from the DHT11, DHT22, AM2302 or AM2301 sensor, follow the next steps to see if you can make it work.“Failed to read from D..
08 Sep ESP32 with DHT11/DHT22 Temperature and Humidity Sensor using Arduino IDE
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This tutorial shows how to use the DHT11 and DHT22 temperature and humidity sensors with the ESP32 using Arduino IDE. We’ll go through a quick introduction to these sensors, pinout, wiring diagram, and finally the Arduino sketch.Learn how to display temperature and humidity readings on a web server using the ESP32 or ESP8266 boards:ESP32 DHT11/DHT2..
08 Sep ESP8266 DHT11/DHT22 Temperature and Humidity Web Server with Arduino IDE
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In this project you’ll create a standalone web server with an ESP8266 that displays the temperature and humidity with a DHT11 or DHT22 sensor using the Arduino IDE. The web server you’ll build can be accessed with any device that has a browser on your local network.Throughout this tutorial we’ll show how to build two different web servers:Web Serve..
08 Sep ESP32 DHT11/DHT22 Web Server – Temperature and Humidity using Arduino IDE
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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 build updates the readings automatically without the need to refresh the web page.With this project you’ll learn:How to read temperature and humidity from DHT sensors;Build..
08 Sep How to Use I2C LCD with ESP32 on Arduino IDE (ESP8266 compatible)
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This tutorial shows how to use the I2C LCD (Liquid Crystal Display) with the ESP32 using Arduino IDE. We’ll show you how to wire the display, install the library and try sample code to write text on the LCD: static text, and scroll long messages. You can also use this guide with the ESP8266.16×2 I2C Liquid Crystal DisplayFor this tutorial we’ll be ..
08 Sep ESP32 OLED Display with Arduino IDE
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We also have a dedicated guide that shows how to display temperature and humidity readings using DHT sensor and ESP32.Introducing 0.96 inch OLED DisplayThe OLED display that we’ll use in this tutorial is the SSD1306 model: a monocolor, 0.96 inch display with 128×64 pixels as shown in the following figure.The OLED display doesn’t require backlight, ..
08 Sep ESP32: Migrating from version 2.x to 3.0 (Arduino IDE)
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Recently the ESP-IDF has been updated and with this new major version, there are some breaking changes in the API. In this guide, you’ll learn about all changes in the API and how you can migrate to the latest version.This guide covers the changes from ESP32 board add-on versions 2.X (based on ESP-IDF 4.4) to version 3.0 (based on ESP-IDF 5.1) of t..
06 Sep ESP32-CAM Camera Boards: Pin and GPIOs Assignment Guide
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ESP32-CAM AI-Thinker Pin AssignmentESP32 development boards with camera are becoming popular with the maker community. There are different models of ESP32 Camera boards with different features. Each ESP32 Camera dev board uses different GPIOs to connect to the camera. In this guide we’ll show you the pin definition to include in your code for each ..
06 Sep Change ESP32-CAM OV2640 Camera Settings: Brightness, Resolution, Quality, Contrast, and More
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This guide shows how to change the ESP32-CAM OV2640 camera settings such as contrast, brightness, resolution, quality, saturation and more using Arduino IDE.The instructions in this tutorial work for any ESP32 camera development board as long as it comes with the OV2640 camera.Installing the ESP32 add-onWe’ll program the ESP32 board using Arduino I..
06 Sep TTGO T-Journal ESP32 Camera: Built-in Programmer, OLED, Antenna and Project Examples
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This is a getting started guide for the TTGO T-Journal ESP32 Camera Development Board. The TTGO T-Journal features an OV2640 camera, an OLED display, several GPIOs to connect peripherals and a built-in programmer, which makes it easy to upload code. We’ll take a quick look at the camera dev board and learn how to program it using Arduino IDE.Introd..
05 Sep ESP32 with DC Motor and L298N Motor Driver – Control Speed and Direction
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This tutorial shows how to control the direction and speed of a DC motor using an ESP32 and the L298N Motor Driver. First, we’ll take a quick look at how the L298N motor driver works. Then, we’ll show you an example of how to control the speed and direction of a DC motor with the L298N motor driver using the ESP32 programmed with Arduino IDE.Update..
05 Sep Installing the ESP32 Board in Arduino IDE (Windows, Mac OS X, Linux)
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There’s an add-on for the Arduino IDE that allows you to program the ESP32 using the Arduino IDE and its programming language. In this tutorial we’ll show you how to install the ESP32 board in Arduino IDE whether you’re using Windows, Mac OS X or Linux.Using Arduino 2.0? Follow this tutorial instead: Installing ESP32 Board in Arduino IDE 2.0Watch t..
05 Sep Installing the ESP32 Board in Arduino IDE (Mac OS X and Linux instructions)
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There’s an add-on for the Arduino IDE that allows you to program the ESP32 using the Arduino IDE and its programming language. In this tutorial we’ll show you how to install the ESP32 board in the Arduino IDE on Mac OS X or Linux. If you’re using a Windows PC follow these instructions instead. Watch the Video TutorialThis tutorial is available in v..
05 Sep Getting Started with the ESP32 Development Board
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New to ESP32? Start here! The ESP32 is a series of low-cost and low-power System on a Chip (SoC) microcontrollers developed by Espressif that include Wi-Fi and Bluetooth wireless capabilities and dual-core processor. If you’re familiar with the ESP8266, the ESP32 is its successor, loaded with lots of new features.Updated 5 August 2024New to the ESP..
05 Sep ESP32 ADC – Read Analog Values with Arduino IDE
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This article shows how to read analog inputs with the ESP32 using Arduino IDE. Analog reading is useful to read values from variable resistors like potentiometers, or analog sensors.Reading analog inputs with the ESP32 is as easy as using the analogRead(GPIO) function, that accepts as argument, the GPIO you want to read.We also have other tutorials..
05 Sep ESP32 SPI Communication: Set Pins, Multiple SPI Bus Interfaces, and Peripherals (Arduino IDE)
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This is a simple guide about SPI communication protocol with the ESP32 using Arduino IDE. We’ll take a look at the ESP32 SPI pins, how to connect SPI devices, define custom SPI pins, how to use multiple SPI devices, and much more.Table of Contents:Introducing ESP32 SPI Communication ProtocolESP32 SPI PeripheralsESP32 SPI PinsUsing Custom ESP32 SPI ..
05 Sep ESP32 I2C Communication: Set Pins, Multiple Bus Interfaces and Peripherals (Arduino IDE)
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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 using Arduino IDE: how to choose I2C pins, connect multiple I2C devices to the same bus and how to use the two I2C bus interfaces.In this tutorial, we’ll cover the following concepts:Connect..
05 Sep ESP32 PWM with Arduino IDE (Analog Output)
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Learn to generate PWM signals with the ESP32 using Arduino IDE. We’ll explain two different methods: using analogWrite and using the LEDC API. As an example, we’ll build a simple circuit to fade an LED.Updated 11 June 2024Before proceeding with this tutorial you should have the ESP32 add-on installed in your Arduino IDE. Follow the next tutorial to..
05 Sep ESP32 Touch Wake Up from Deep Sleep
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This guide shows how to wake up the ESP32 from deep sleep using the touch sensitive pins. The ESP32 will be programmed using Arduino IDE.The ESP32 can be awake from deep sleep using several wake up sources: timer, external wake up and touch wake up. This article shows how to use touch wake up.To learn more about deep sleep and other wake up sources..
05 Sep ESP32 Capacitive Touch Sensor Pins with Arduino IDE
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his article shows how to use the ESP32 touch pins with Arduino IDE. The ESP32 touch pins can sense variations in anything that holds an electrical charge. They are often used to wake up the ESP32 from deep sleep.To read the value of the ESP32 touch pins, use the touchRead(GPIO) function, that accepts as argument, the GPIO you want to read.Watch the..
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