In this ESP32 user guide, we will show you how to encrypt messages while using ESP-NOW protocol while wirelessly transferring data from one ESP32 to another. In previous ESP-NOW getting started tutorials we looked upon this wireless protocol in depth where we performed wireless communication between ESP32 devices. This communication protocol is a low-power, secure, … Read more
In this user guide, we will learn to interface MS5611 barometric pressure sensor module with Arduino. Firstly, we will introduce you to the MS5611 sensor including its pinout, features, and interfacing with Arduino. Secondly, we will install the Arduino MS5611 library in Arduino IDE to access the sensor data. Lastly, we see two examples to … Read more
In this user guide, we will learn to interface HTU21D Temperature and Humidity Sensor module with Arduino. Firstly, we will introduce you to HTU21D sensor including its pinout, features, and interfacing with Arduino. Secondly, we will install the Adafruit HTU21D library in Arduino IDE to access the sensor data. Lastly, we see two examples to … Read more
In this tutorial, we will introduce you to Deta Base (NoSQL database) and how to use it with ESP32. We will show you how to perform different CRUD operations such as create, read, update, delete and query for a Deta Base instance using our ESP32 and Arduino IDE. We will demonstrate all this through an … Read more
In this tutorial, we will learn to use SPI communication buses of ESP32. By using that, we will see how to perform master slave SPI communication with ESP32 boards using Arduino IDE. Furthermore, we will look into SPI pins, how to use multiple SPI bus interfaces supported by ESP32, and how to configure them. Recommended … Read more
In this tutorial, we will learn to use ESP32 I2C communication channels using Arduino IDE. We will learn how to use different pins of ESP32 for I2C communication apart from the default I2C pins, connect different I2C devices to the same bus and also see how to use the two I2C bus interfaces. Moreover, we will interface … Read more
In this tutorial, we will learn to publish sensor readings to Node-Red with ESP32 MQTT and Arduino IDE. We will perform MQTT communication with ESP32 and Node-Red by publishing and subscribing to MQTT topics. There will be one ESP32 MQTT publisher and Node-Red as a subscriber. We will publish DS18B20, DHT, and BME280 sensor readings … Read more
In this ESP8266 tutorial, we will learn to use ESP8266 NodeMCU as an MQTT client with examples of Publisher and Subscriber using Arduino IDE. There will be one ESP8266 MQTT publisher and two subscribers. We will publish DS18B20 sensor readings to MQTT with ESP8266 and one ESP8266 will act as a subscriber and Node-Red Dashboard … Read more
In this ESP8266 tutorial, we will learn to use ESP8266 NodeMCU MQTT as a Publisher and Subscriber using Arduino IDE. There will be one ESP8266 MQTT publisher and two subscribers. We will publish BME280 sensor readings to MQTT with ESP8266 and one ESP8266 will act as a subscriber and Node-Red Dashboard will also subscribe to … Read more
In this tutorial, we will learn to use MQTT with ESP32 to publish and subscribe to MQTT topics. We will see how to use ESP32 as an MQTT publisher and subscriber. For demonstration, we will control ESP32 outputs by publishing MQTT messages. There will be one ESP32 MQTT publisher connected with a push button and … Read more