This tutorial is all about monitoring a live weather station with an ESP8266 NodemCU using Internet of Things technology. With the help of the NodeMCU ESP8266-12E Wifi Module, we will connect the DHT11 Humidity & Temperature Sensor, the BMP180 Barometric Pressure Sensor, and the FC37 Rain Sensor. The information that we gather by taking readings of the temperature, humidity, barometric pressure, and rainfall will then be uploaded to a web server. After the code has been successfully uploaded, the IP address of NodeMCU can be located in the serial monitor. Going to any web browser of your choice and displaying the data in an appealing widget manner requires only one IP address. The project is really intriguing, and it has the potential to be put to use in secluded locations or in a refrigerator where data needs to be monitored. What is a Weather Station? A weather station is a device that, via the use of a variety of sensors, gathers information relating to the environment and the weather. There are two distinct categories of weather stations: those that have their own sensors and those that get their data from remote servers. The first category of weather stations is the type that has its own sensors. In this walkthrough, we will focus on the first option, which is to create our very own weather station from scratch. A weather station's sensors might include a thermometer for obtaining temperature readings, a barometer for determining the pressure in the atmosphere, a hygrometer for determining the level of humidity in the air, a rain sensor for determining the amount of precipitation, an anemometer for determining the rate of wind, and other instruments. There are a few different names for weather stations, including weather centers, personal

weather stations, professional weather stations, home weather stations, and weather forecasters.

NodeMCU- ESP8266 BMP180 Sensor- BMP180 Barometric Pressure Sensor from Bosch DHT11 Sensor- DHT11 Humidity Temperature Sensor Rain Sensor - FC-37 Rain Sensor Module Resistor 4.7K Connecting Wires Breadboard

About DHT11 The DHT11 is a fundamental digital temperature and humidity sensor that is available at a very low cost. In order to determine the temperature and humidity of the air around it, it employs a capacitive humidity sensor and a thermistor, and then outputs a digital signal on the data pin. It is rather easy to operate, however precise timing is required in order to gather data. Almost any microcontroller will have a relatively simple time reading the digital signal. Features of DHT11 Ultra-low cost During conversion, a maximum current of 2.5 milliamperes will be drawn from 3 to 5 volts of electricity (while requesting data) Readings of humidity from 20 to 80% can be taken with an accuracy of 5%.

Accurate temperature measurements from 0 to 50 degrees Celsius, to within 2 degrees Celsius. The sampling rate should not exceed 1 Hz at most (once every second) Body size 15.5mm x 12mm x 5.5mm 4 pins with a 0.25 mm gap between them About BMP180 The BMP180 is Bosch Sensortec's brand-new digital barometric pressure sensor. It has a very high performance, which enables it to be used in sophisticated products like smartphones, tablet PCs, and sports gadgets. It is the successor to the BMP085 and introduces a number of advancements, including a reduction in size and an increase in the number of digital interfaces. Because of its extremely low power consumption—just 3 A— the BMP180 is the industry standard when it comes to helping your devices save power. In addition to this, the BMP180 is differentiated by the exceptionally stable behavior (performance) it demonstrates with regard to the independence of the supply voltage. Features of BMP180 Vin: 3 to 5VDC Logic: 3 to 5V compliant Pressure sensing range: 300-1100 hPa (9000m to -500m above sea level) Up to 0.03hPa / 0.25m resolution -40 to +85°C operational range, +-2°C temperature accuracy This board/chip uses I2C 7-bit address 0x77.

Rain sensors are used in the detection of water beyond what a humidity sensor can detect. The rain sensor is able to detect water because it is able to complete the circuits that are written on its sensor boards. When wet, the sensor board behaves like a variable resistor with a value of 100k ohms, but when dry, it has a value of 2 million ohms. In a nutshell, the amount of current that will be conducted will directly correlate to how moist the board is. The Connections and the Circuit Diagram The schematic for the live weather station monitoring that may be made with NodeMCU can be found down below. Put together the circuit in the same way as is depicted in the diagram.

First, put together the circuit in the same way that it is depicted in the figure, and then transfer the main ino file from your computer to the NodeMCU board. After the code is uploaded, obtain an IP address for the ESP8266 from the serial monitor.

After that, make a copy of this IP address, paste it into any web browser such as Google Chrome, and press the enter key. You will receive an attractive widget containing the weather information as displayed in the following example.