Connecting and Programming a Temperature and Humidity Sensor in

🌍 Why Are Sensors Important?

Sensors help the Arduino interact with the real world — just like how humans use their senses!

They allow the Arduino to:

•Detect changes around it (light, heat, motion, etc.)

•Collect data from the environment

•Make smart decisions automatically

👉 Without sensors, the Arduino cannot “feel” what’s happening.

🔌 Circuit Connection (DHT11):

1- Include the DHT11 Library:

This line tells the Arduino to use the DHT11 library, which contains all the instructions needed to communicate with the DHT11 sensor.

Sketch → Include Library → Manage Libraries → Search “DHT sensor library” → Install.