IOT Based Temperature and Humidity Monitoring System Using Raspberry Pi Pico W

This paper presents a smart IoT-based environmental monitoring and control system utilizing the Raspberry Pi Pico W microcontroller.The system is equipped with DHT22 temperature and humidity sensors, an LDR for light sensing, and actuators like fans for environmental control.Sensor data is transmitted via Wi-Fi to cloud platforms such as Thing Speak for real-time monitoring.When environmental parameters cross set thresholds, actuators are automatically activated.The system is cost-effective, energy-efficient, and highly suitable for applications in agriculture, healthcare, smart homes, and industry.