Sensors are the backbone of any IoT project. Here’s a detailed look at five essential sensors and their applications:
1. DHT11 Temperature and Humidity Sensor
- Uses: Home automation, weather monitoring.
- Why It’s Great: Easy to use with Arduino and Raspberry Pi.
- Example Project: Build a smart indoor climate monitor.
DHT11 Temperature and Humidity Sensor Module Digital Switch with Indicator for Arduino
DHT11 DHT-11 Digital Temperature and Humidity Temperature Sensor for arduino DIY KIT
2. Ultrasonic Sensor (HC-SR04)
- Uses: Distance measurement, obstacle avoidance in robots.
- Why It’s Great: Accurate and affordable.
- Example Project: Create an ultrasonic parking assistant.
3. PIR Motion Sensor
- Uses: Security systems, automatic lighting.
- Why It’s Great: Detects human presence efficiently.
- Example Project: DIY motion-activated lights.
4. MQ-2 Gas Sensor
- Uses: Gas leakage detection, air quality monitoring.
- Why It’s Great: Sensitive to various gases, including methane and smoke.
- Example Project: Build a gas-leak alert system.
5. Light Dependent Resistor (LDR)
- Uses: Light-sensitive applications, solar trackers.
- Why It’s Great: Simple and versatile.
- Example Project: Design a smart light control system.