19 Arduino Modules that You Can Buy For ₹ 200 (Jan-2021)

Sensors are electronic devices that help you to convert physical data into electrical or digital data. Arduino sensors are highly effective and easy to work with. By using those mentioned Sensors you can do your Own DIY. Sensors in Arduino are developed by a huge Arduino community. I also have instructions on how to use most of them with the Arduino.

Here are the Top 21 sensors for Arduino…

1. HC-SR04 Ultrasonic Module

The HC-SR04 ultrasonic sensor uses sonar to determine the distance to an object like bats do. It offers excellent non-contact range detection with high accuracy and stable readings in an easy-to-use package.

2. IR Infrared Obstacle Avoidance Sensor Module

This module is very easy to use and is often used in robots to detect objects near the sensor. These sensors have a digital output pin that outputs a signal when it detects an object. When the module detects an obstacle, the green indicator light on the board lights up. The module detects the distance 2 ~ 30cm, detection angle 35 °.

3. Soil Hygrometer Detection Module Soil Moisture Sensor

This is a simple water sensor that can be used to detect soil moisture. It outputs a high signal when the moisture is above a certain threshold. You can also read an analog signal whose value is proportional to the moisture level. Use this sensor to create an automatic self-watering plant.

4. Microphone Sensor

This sensor is used for sound detection. This module has two outputs: AO (analog output), or DO (digital output). The digital output sends a high signal when the sound intensity reaches a certain threshold. The threshold-sensitivity can be adjusted via a potentiometer on the sensor.

5. Digital Barometric Pressure Sensor Board

You can use this module to measure the absolute pressure of the environment. By converting the pressure measures into altitude, you have a reliable sensor for determining the height of your robot or projectile, for example. This sensor also measures temperature and humidity.

6. Photoresistor Sensor Module Light Detection Light

You can use this module for light detection with an Arduino.

7. Digital Thermal Sensor Module Temperature Sensor Module

The thermal sensor module is very sensitive to the ambient temperature, generally used to detect the ambient temperature. Through the adjustment of the potentiometer, you can change the temperature detection threshold.

8. Rotary Encoder Module Brick Sensor Development Board

When you rotate the rotary encoder it counts in the positive direction and the reverse direction. Rotation counts are not limited. With the buttons on the rotary encoder, you can reset to its initial state and start counting from 0.

9. MQ-2Gas Sensor Module Smoke Methane Butane Detection

This sensor module utilizes an MQ-2 as the sensitive component and has a protection resistor and an adjustable resistor on board. The MQ-2 gas sensor is sensitive to LPG, i-butane, propane, methane, alcohol, Hydrogen and smoke. It could be used in gas leakage detecting equipments in family and industry. The resistance of the sensitive component changes as the concentration of the target gas changes.

10. SW-420 Motion Sensor Module Vibration Switch Alarm

This module can be used to trigger the effect of various vibration, theft alarm, intelligent car, earthquake alarm, motorcycle alarm, etc.

11. Humidity and Rain Detection Sensor Module

This is a rain sensor. It’s used for all kinds of weather monitoring.

12. Passive Buzzer Module

A simple sound making module. You set high or low to drive this module. By changing the frequency you’ll hear a different sound.

13. Speed Sensor Module

Tachometer is a simple module that allow you to test the speed of the motor. Widely used for motor speed detection, pulse count, position limit, and so on.

14. IR Infrared Flame Detection Sensor Module

Flame detection sensor module is sensitive to the flame, but also can detect ordinary light. This is usually used as a flame alarm. Detects a flame or a light source of a wavelength in the range of 760nm to 1100 nm. Detection point of about 60 degrees, particularly sensitive to the flame spectrum.

15. 5V 2-Channel Relay Module

This is a 2 Channel 5V Relay Module. It allows you to control various appliances that operate at high voltages, with low voltages like 5V. It can be controlled directly by any microcontroller.

16. Breadboard Power Supply Module 3.3V 5V

A simple module to power your breadboard. It supplies both 3.3V and 5V. This is specially useful to power up your breadboard circuits from an external power supply.

17. HC-SR501 Pyroelectric Infrared Sensor Module

A PIR sensor is a little module that allows you to detect movement from humans or pets. It’s easy to integrate with your microcontroller.

18. Accelerometer Module

This module measures the acceleration. It’s commonly used in portable devices and video game controllers to detect movement and actions from the player.

19. RF 433MHz Transmitter/Receiver

If you need data sent from one microcontroller to another, the 433MHz link modules are a cheap way to do that (all data is sent via Radio Frequency).