In this project, we will create a standalone web server using a NodeMCU ESP8266 that displays the Temperature and Humidity with a DHT11 sensor using the Arduino  IDE. Actually, the webserver we will build can be easily accessed with any device that features a browser on your local network. NodeMCU ESP8266 Monitoring DHT11/DHT22 Temperature and Humidity with Local Web Server.

1. TEMPERATURE
MEASURMENT
Submited by:-
Dheerendra Kumar 19BEE10025
Puru Sahu 19BEE10032
Tanmay Kalra 19BEE10003
Shrey Parag Patel 19BEE10022

2. • The DHT11 is a basic, ultra low-
cost digital temperature and
humidity sensor.
• It uses a capacitive humidity
sensor and a thermistor to
measure the surrounding air,
and spits out a digital signal on
the data pin (no analog input
pins needed).
• Its fairly simple to use, but
requires careful timing to grab
data.

3. NODEMCU(ESP8266 WIFI PROGRAMMING AND
DEVELOPMENT BOARD )
A mobile Phone
DHT11
Lithium Polymer Battery
100 Ohm Resistor Qty: 2
10k Ohm Resistor Qty: 1
LED 1 Red, 1 Green
USB micro-B Cable
Component
that we used in
this project

4. BLOCK
DIAGRAM

5. Circuit Diagram

6. Low cost
3 to 5V power and I/O
2.5mA max current use during
conversion (while requesting data)
Good for 20-80% humidity
readings with 5% accurace
Good for 0-50°C temperature
readings ±2°C accuracy
TECHNICAL DETAILS

7.  In this project, we will create a standalone
web server using a NodeMCU ESP8266 that
displays the Temperature and Humidity with a
DHT11 sensor using the Arduino IDE.
 Actually, the webserver we will build can be
easily accessed with any device that features
a browser on your local network. NodeMCU
ESP8266 Monitoring DHT11/DHT22
Temperature and Humidity with Local Web
Server.
 Web Server: Asynchronous web server which
will updates the Temperature and Humidity
automatically. We don’t need to refresh the
webpage to update the data.
 If temperature is below or equal to 25’C then
green LED glow and if temperature is more
than 25’C then red LED glow.
WORKING PLAN

8. Conclusion- 8
• Finally, we have completed the NodeMCU ESP8266 Monitoring DHT11/DHT22 Temperature and
Humidity with Local Web Server.

9. References-
https://www.google.com/url?sa=i&url=https%3A%2F%2Ftheiotprojects.com%2Fesp8266-dht11-dht22-temperature-
humidity-with-local-web-
server%2F&psig=AOvVaw3FgLTewrh5vsHWddHlYcRW&ust=1615827919126000&source=images&cd=vfe&ved=0CAIQjRx
qFwoTCMC_p56isO8CFQAAAAAdAAAAABAD