Top 10 Sensors Every Arduino Project Needs

Why Sensors Matter

Sensors are the eyes and ears of your Arduino project. They convert real-world physical quantities into electrical signals your microcontroller can read and act on.

1. DHT22 — Temperature & Humidity

The DHT22 is a must-have. It measures temperature (-40 to 80°C) and humidity (0–100% RH) with high accuracy. Perfect for weather stations, smart home, and greenhouse automation.

2. HC-SR04 — Ultrasonic Distance

Measures distance from 2cm to 400cm using sound waves. Used in obstacle avoidance robots, parking sensors, and liquid level monitoring.

3. PIR HC-SR501 — Motion Sensor

Detects human movement in a 7-metre radius. Used in security systems, automatic lighting, and smart door bells.

4. MQ-2 Gas Sensor

Detects LPG, smoke, alcohol, propane, hydrogen, methane. Essential for home safety and air quality monitors.

5. ADXL345 — Accelerometer

3-axis digital accelerometer for tilt detection, vibration monitoring, and gesture recognition in wearable projects.

6. BMP280 — Barometric Pressure

Measures atmospheric pressure and altitude. Used in weather stations and drone altitude control.

7. MPU-6050 — Gyroscope + Accelerometer

6-axis IMU for drone stabilization, balance robots, and motion tracking systems.

8. Soil Moisture Sensor

Monitors soil water content for automated plant watering systems and smart agriculture.

9. Load Cell + HX711

For precise weight measurement in digital scales and force feedback systems.

10. Color Sensor TCS3200

Detects RGB color — used in sorting machines, line followers, and colour-mixing devices.

All these sensors are available at Anilestore with same-day dispatch and GST invoice.