Top Used Sensors for Arduino

 

 

The Arduino community has created a wide variety of modules and shields that can enhance your projects. Here’s the ultimate collection of 30 Arduino Modules that you can get for less than $2 . Let’s start!

 

 

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List of the Best  Arduino Modules

Sensors are awesome because they allow us to know what’s going on in the outside world. There are sensors for almost anything you can think of. In this guide we’re going to show you a collection of 30 Arduino sensors and modules you can buy for less than $2. We also have instructions on how to use most of them with the Arduino.

 

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1. HC-SR04 Ultrasonic Module

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The HC-SR04 ultrasonic sensor uses sonar to determine 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.

Here’s a complete guide on how to use this module

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2. IR Infrared Obstacle Avoidance Sensor Module

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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 °.

Here’s a complete guide on how to use this module

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3. Soil Hygrometer Detection Module Soil Moisture Sensor

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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..

Here’s a complete guide on how to use this module

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4. Microphone Sensor

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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 the sound intensity reaches a certain threshold. The threshold-sensitivity can be adjusted via potentiometer on the sensor

Here’s a complete guide on how to use this module

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5. Digital Barometric Pressure Sensor Board

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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.

Here’s a complete guide on how to use this module

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6. Photoresistor Sensor Module Light Detection Light

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You can use this module for light detection with an Arduino. For example, you can build a Night Security Light project.

Here’s a complete guide on how to use this module

                                                                                Amazon​click here to View this module on amazon 
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7. Digital Thermal Sensor Module Temperature Sensor Module

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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.

Here’s a complete guide on how to use this module

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8. Rotary Encoder Module Brick Sensor Development Board

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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.

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

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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.

Here’s a complete guide on how to use this module

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10. SW-420 Motion Sensor Module Vibration Switch Alarm

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

Here’s a complete guide on how to use this module

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11. Humidity and Rain Detection Sensor Module

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

Here’s a complete guide on how to use this module

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12. Passive Buzzer Module

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

 

                                                                               Amazon​click here to View this module on amazon 
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13. Speed Sensor Module

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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.

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14. IR Infrared Flame Detection Sensor Module

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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.

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15. 5V 2-Channel Relay Module

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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

Here’s a complete guide on how to use this module

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16. Breadboard Power Supply Module 3.3V 5V

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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.

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17. HC-SR501 Pyroelectric Infrared Sensor Module

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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.

Here’s a complete guide on how to use this module

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18. Accelerometer Module

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

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19. DHT11 Temperature and Humidity Sensor

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It’s a great little sensor to measure temperature and humidity in your room or outside. It integrates seamlessly with the Arduino.

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20. RF 433MHz Transmitter/Receiver

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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). 

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21 . ESP8266 WiFi Module

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This module costs a little bit more than $2, but it’s totally worth it. You can get one ESP8266 WiFi Module for about $4 This module can send emails, host a web server, control LEDs, etc.

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22 . knock sensor

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In simple terms, this is a switch that turns on when it detects a knock. There is an LED that alternatively gives a visual signal of the state of the sensor, high or low, and the high level designated by the LED turning on.

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23 . Voltage (over/under) detection

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This sensor detects the voltage level of any DC voltage supplier, up to 25 volts. Critical points of over-voltage / under-voltage can be adjusted.

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24 . magnetic reed sensor for Arduino

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This sensor helps sense the presence of magnetic fields. When a magnetic substance approaches, the switch senses the magnetic field and is electrified; thus, the module outputs low level. When there is not magnet approaching, the module is de-energized and will output high

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25 . Optical fingerprint sensor

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This sensor helps to detect, record or verify finger-prints. This can help you enroll new fingers directly. Up to 162 finger-prints can be stored in the onboard FLASH memory

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26 . Alcohol Gas Sensor Detector for Arduino

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This sensor senses the presence of alcohol Gas in the air. The detection range is 10 to 1000ppm. Detecting Type: Alcohol, Ethanol

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27 . 2.4GHz Wireless Transceiver in Antistatic Foam

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This is an important part of a wireless sensor network. It can help control objects wirelessly. This module can be used for projects such as: wireless voice transmission such as VoIP, home automation and wireless networks.

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28 .Liquid Crystal Display                     

Sdd  LCDs like these are very popular and broadly used in electronics projects as they are good for displaying information like sensors data from your project, and also they are very cheap.

Here’s a complete guide on how to use this module

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