In this ESP8266 NodeMCU tutorial, we will introduce you to DS3231 RTC module which will monitor the current time and display it on an OLED. We will build a Real Time Clock (RTC) with the help of DS3231 module, ESP8266 and OLED display. A real time clock is basically a digital clock which is responsible … Read more
In this user guide, we will learn to build ESP8266 NodeMCU SHT31 Web server using Server-Sent Events (SSE). Using this technique, we will build an ESP8266 controlled web server that will automatically update sensor readings such as temperature and humidity to all connected web clients and display them in linear and radial gauges. Any appropriate … Read more
Whatabot and callmebot are free WhatsApp APIs that are helpful in sending message notifications, sensor readings, motion detection and door-opening alerts. In this tutorial, we will create a ESP8266 NodeMCU based motion detection notification system with WhatsApp messages using callmebot and WhataBot APIs and HTTP client library in Arduino IDE. It will send motion detection notifications to your … Read more
In this user guide, we will learn to interface MS5611 barometric pressure sensor module with ESP8266 NodeMCU. Firstly, we will introduce you to the MS5611 sensor including its pinout, features, and interfacing with ESP8266. Secondly, we will install the Arduino MS5611 library in Arduino IDE to access the sensor data. Lastly, we see two examples … Read more
In this user guide, we will learn to interface HTU21D Temperature and Humidity Sensor module with ESP8266 NodeMCU. Firstly, we will introduce you to HTU21D sensor including its pinout, features, and interfacing with the ESP8266 board. Secondly, we will install the Adafruit HTU21D library in Arduino IDE to access the sensor data. Lastly, we see … Read more
In this user guide, we will learn to interface SHT31 Temperature and Humidity Sensor module with ESP8266 NodeMCU. Firstly, we will introduce you to SHT31 sensor including its pinout, features, and interfacing with ESP8266. Secondly, we will install the Adafruit SHT31 library in Arduino IDE to access the sensor data. Lastly, we see two examples … Read more
In this tutorial, we will learn to publish sensor readings to Node-Red with ESP8266 MQTT using Miro-Python. We will perform MQTT communication with ESP8266 and Node-Red by publishing and subscribing to MQTT topics. There will be one ESP8266 MQTT publisher and Node-Red as a subscriber. We will publish DS18B20, DHT, and BME280 sensor readings to … Read more
In this ESP32/ESP8266 tutorial, we will learn to use ESP MQTT as a Publisher using MicroPython and subscribe through Node-Red. There will be one ESP32/ESP8266 MQTT publisher and Node-Red subscriber. We will publish DS18B20 sensor readings to MQTT with ESP32/ESP8266 and Node-Red Dashboard will subscribe to the MQTT topics and display sensor readings on the … Read more
In this ESP32 ESP8266 tutorial, we will learn to use ESP MQTT as a Publisher using MicroPython and subscribe through Node-Red. There will be one ESP32/ESP8266 MQTT publisher and Node-Red subscriber. We will publish DHT11 and DHT22 sensor readings to MQTT with ESP32/ESP8266 and Node-Red Dashboard will subscribe to the MQTT topics and display sensor … Read more
In this ESP32 and ESP8266 tutorial, we will learn to use ESP MQTT as a Publisher using MicroPython and subscribe through Node-Red. There will be one ESP32/ESP8266 MQTT publisher and Node-Red subscriber. We will publish BME280 sensor readings to MQTT with ESP32/ESP8266 and Node-Red Dashboard will subscribe to the MQTT topics and display sensor readings … Read more