TOP 15 Arduino Sensors with Projects for Beginners(Updated)

Are you a beginner and want to work on different sensors, but don’t know how to start? Here is the list of 15 Arduino Sensors with Projects for you to get started.

In this post, we have listed the most popular and widely used sensors plus one or more projects based on each sensor. Before you go through the post, I want you to know that the projects listed below are selected very carefully by keeping in mind each and every aspect.

NOTE: Please keep in mind that each Arduino-Sensor project listed below is selected on the basis of creativity and application. And not merely on the basis of complexity involved. So when you go through these projects, just try to grasp the idea behind these sensors applications and write down how you can use them in your own project.

The link to each project is given below the respective project’s summary.

Just try out these sensors to unleash that creative engineer within you!

LM393 Speed Sensor

LM393 Speed sensor
LM393 Speed sensor

LM393 is a speed sensor module used for measuring the speed of the motor, pulse count, etc.

Project: 5V geared motor speed measurement 

Speed Measurement of DC Motor
Speed Measurement of DC Motor

Our goal here is to regulate the speed of a 5V geared motor. This is an innovative project that allows you to make a speed regulator at home using an Arduino Uno and a speed sensor.

The speed sensor detects the change in the value of the 10K pot and varies the speed accordingly. Now you don’t need to worry about the low speed of fan interrupting your NETFLIX experience.

Components required for the project are-

  • Arduino Uno
  • LM393 Speed Sensor Module
  • 5V geared motor with encoder wheel
  • PCB and breadboard
  • Cables and connectors
  • 16×2 LCD
  • 10K POT

Link to the project is given below-

Touch Sensor

touch sensor
touch sensor

About Touch Sensor: Unlike pushbuttons, a touch sensor is activated due to physical contact. It is highly sensitive and can sense different touch modes i.e single tapping, long touch, and swipe, etc.

Project: Touch Dimmer circuit using Arduino

Touch dimmer switch circuit using arduino
Touch Dimmer switch circuit using Arduino

Objective: In this project, the brightness of a small bulb is controlled using a touch sensor. The longer the touch time, the brighter the bulb glows. So the brightness of the bulb is adjusted in accordance with the touch time.

Components Used:

  • Arduino Board x 1
  • Touch Sensor
  • 2N2222 NPN Transistor
  • 1 Kohm Resistor
  • Small Bulb
  • Power Supply
  • Breadboard for connections
  • Connecting Wires

The link to the project site is given below:

Touch dimmer circuit

TCS-3200 Color Sensor

TCS3200 Color sensor
TCS3200 Color sensor

The TCS3200 Color Sensor Module has a high-quality light sensor that allows the sensor to sense any color through a combination of Red, Green, and Blue. 

Project: Color detection using TCS-3200 and LCD display

Color detection using TCS-3200 and LCD display
Color detection using TCS-3200

This project allows you to detect the color of something without even looking at it. When we place a colored sheet in front of the sensor, it detects the color and flashes it on the 16×2 LCD.

This project can come in handy for blind or color blind people or save your relationship when she asks you to pick up the perfect shade of Lipstick.

The project link is given below-

Color detection using TCS-3200

MQ-2 Gas Sensor

MQ-2 Gas sensor_detector
MQ-2 Gas sensor

MQ-2 Gas sensor or detector senses the concentration of gases such as LPG, hydrogen, alcohol, propane, methane, smoke, and carbon monoxide in the air.

Project: Alcohol detector using MQ-2 with Arduino and LCD

Alcohol detector using MQ-2 with Arduino
Alcohol detector using MQ-2 with Arduino

With this project you can make your handy alcohol detector at home and save yourself when your drunk friend insists on driving, claiming that he is not drunk.

An alcohol detector detects the presence of alcohol present in its surrounding atmosphere and sends a signal to flash a warning message on the 16×2 LCD and set out the alarming buzzer. Congratulations! Now you are a traffic cop (almost)!

The project link is given below-

Alcohol detector using MQ-2

Temperature Sensor LM35

LM35 Temperature Sensor
LM35 Temperature Sensor

About LM35 temperature sensor: LM35 is one of the popular temperature ICs. It is used to measure the surrounding temperature in the form of the analog voltage.

Project: Temperature measurement using LM35

Arduino Thermometer using LM35
Arduino Thermometer using LM35

Objective: To measure and display the temperature of surroundings using an LM35 temperature sensor and display the readings on the LCD display.

LM35 measures the temperature and sends this in the form of analog voltage to Arduino. This temperature value is then displayed on the LCD display. 

Components used:

  • 1 x Arduino UNO (can be any Arduino board)
  • 1 x 16×2 LCD
  • 1 x LM35 Temperature Sensor
  • 1 x Breadboard
  • 1 x USB Cable
  • 1 x 10k Potentiometer
  • 1 x 220-ohm resistor
  • 1 x 9V Battery and clip (optional, for more portability)

Link to the project site is given below:

Arduino Thermometer

Light Dependent Resistor(LDR)

LDR
LDR

About LDR: LDR or Light Dependent Resistor changes its resistance according to the intensity of light that falls on it. The resistance value is inversely proportional to the intensity of light.

Project 1: Using LDR to control the ON/OFF status of a bulb.

Controlling Status of Bulb using LDR
Controlling Status of Bulb using LDR

OBJECTIVE: To control the state of a bulb using LDR and Relay with Arduino. 

As soon as the intensity of light decreases below a certain value, the status of the bulb changes from OFF to ON.   

Electronic Components you need for this project are:

  • Arduino Uno
  • LDR
  • SPDT Relay
  • Connecting Wires

Link to the project site is given below:

LDR-Arduino

Project 2: Suntracker using 4 LDR with Arduino

Suntracker using LDR and Servo motor
Suntracker using LDR and Servo motor with Arduino

OBJECTIVE: To build an Arduino Servo-controlled mechanism that follows the sun as it moves in the horizon.

Solar Panels can be attached to the front so that maximum sunlight gets absorbed by them at any instant. Since Arduino-Sunflower acts like a real Sunflower in presence of sunlight, it is called an electronic Sundancer! 

This project was posted by Elecrow on Instructables.com

Components you need for this project are:

  • Arduino Board  
  • LDR(Light dependent resistors) X 4
  • Connecting Wires
  • Linear Potentiometer X 4
  • Base Shield For Arduino
  • Cardboard
  • Foamboard
  • Stick
  • Servo Motor

Link to the project site is given below:

Arduino Sunflower

Humidity plus Temperature Sensor Module

Humidity Sensor
Humidity Sensor

About this sensor: This sensor module measures the humidity and temperature of the surroundings.

Project: Humidity and Temperature measurement

humidity sensor with arduino
Temperature and humidity measurement using a humidity sensor

OBJECTIVE: To measure the humidity and temperature of surrounding using a Humidity sensor with Arduino and then prints the value on an LCD display.      

Components used:

  • Arduino Uno
  • DHT11 Humidity and Temperature sensor module
  • 16×2 LCD display
  • 10k Ohm potentiometer
  • 5kohm resistor
  • Power supply
  • Breadboard for connection
  • Connecting Wires

Link to the project site is given below:

Humidity Sensor Module

Water Flow Sensor

Water flow sensor
Water flow sensor

Water flow sensors are used in pipes to measure the rate of flow of water and for calculating the volume of water flowed through the pipe.

Project: Water flow and volume measurement

Water flow and Volume measurement Project
Water flow and Volume measurement Project

This project demonstrates a smart way to monitor the flow of water. The water flow sensor detects the rate of flow of water and keeps track of the total amount of water that has flowed through it. You can check the values on the LCD screen.

The project link is given below-

Water flow/volume measurement

Moisture Sensor

Moisture Sensor
Moisture Sensor

About Moisture sensor: Moisture sensor detects the level of moisture present in surroundings and hence commonly used in plant Irrigation type projects.

Project: Sensing Soil Moisture amount  

Soil Moisture measurement using Arduino
Soil Moisture measurement using Arduino

OBJECTIVE: To measure the soil moisture content and print it on Serial Monitor of Arduino IDE.                               

Electronic Components you need for this project are:            

  • Arduino Uno
  • Moisture Sensor
  • Breadboard for connections
  • Connecting wires

Link to the project page is given below:

Arduino Soil Moisture Sensor

Water / Rain / Liquid Sensor Module

 Rain Sensor Module
Rain Sensor Module

About: Rain Sensor senses the droplets of water on its detector plate. 

PROJECT: Arduino Rain Water Alarm

OBJECTIVE:  To detect the water droplets by Blinking LED and a buzzer.                                                                                             

Components you need for this project are:

  • Arduino Uno
  • Rain Sensor
  • Buzzer 
  • LED

Link to the project site is given below:

Liquid Sensor Module

Accelerometer Sensor

Accelerometer Sensor
Accelerometer Sensor

About accelerometer sensor: Accelerometer measures the acceleration in one to three-axis and thus can be used to sense tilt movements.

PROJECT: Accelerometer-based gesture-controlled Robot using Arduino. 

OBJECTIVE:  To build an accelerometer-based gesture-controlled robot using Arduino. 

Components you need for this project are:

  • Arduino UNO
  • Accelerometer
  • DC Motors
  • HT12D
  • HT12E
  • L293d Motor Driver
  • RF Module
  • 9v Battery
  • Robot Chasis
  • Connecting Wires

Link to the project site is given below:

Hand Gesture Controlled Robot

IR Infrared Obstacle Avoidance Sensor Module

IR Sensor
IR Infrared Obstacle Avoidance Sensor Module

About IR Sensor: IR or Infrared Sensor uses infrared waves to detect the presence of an object or white/black surface. 

PROJECT 1: IR Sensor-based Line Follower

Arduino Line Follower
Arduino Line Follower

OBJECTIVE:  To build a Line Follower Robot using two IR sensors with Arduino.                                                       

Components you need for this project are:

  • Arduino UNO
  • Motor Driver L293D
  • Geared DC Motors
  • IR Sensor Module x 2
  • Power Supply
  • Connecting Wires                                                                                  

Link to the project site is given below:

IR Sensor-based Line Follower

PROJECT 2: IR Sensor-based Motion Sensing-Alarm

OBJECTIVE:  To build a motion-sensing alarm with Arduino and IR sensors.                                                                 

Components you need for this project are:

  • Arduino Board
  • Buzzer
  • 470 Ohm Resistor
  • IR Sensor Module x 2
  • Power Supply
  • NPN transistor
  • Pushbutton
  • Connecting Wires                                                                                  

Link to the project site is given below:

IR Sensor based Motion Sensor Alarm

Ultrasonic Sensor (HC-SR04)

HCSR04 Ultrasonic Sensor
HC-SR04 Ultrasonic Sensor

About: HC-SR04 Ultrasonic Sensor is a simple ultrasonic sensor that can measure distance up to 400 cm. The sensor has 4 onboard pins that connect to a microcontroller like Arduino.d Waves.  

PROJECT 1: Door Alarm using Ultrasonic Sensor

OBJECTIVE: To build a Door Alarm using Ultrasonic Sensor with Arduino                                                                    

Components you need for this project are:

  • Arduino Board
  • Buzzer
  • HC-SR04 Ultrasonic Sensor
  • Breadboard for connection
  • Connecting Wires 

Link to the video source is given below:

Arduino Door Alarm

PROJECT 2: Distance Measurement using Ultrasonic Sensor and Arduino.

OBJECTIVE: To measure the distance of nearby objects using an ultrasonic sensor and Arduino.                                   

Components you need for this project are:

  • Arduino Board
  • LCD Display
  • HC-SR04 Ultrasonic Sensor
  • Breadboard for connection
  • Connecting Wires 

The link to the video source is given below:

Measuring Distance using HC-SR04 Sensor

PROJECT 3: Arduino Based Smart Blind Stick

Smart Blind Stick Using Arduino

OBJECTIVE: To make a circuit using an Ultrasonic sensor and Arduino which indicates the object in front by producing a beep sound.

This circuit can act as a smart blind stick if fitted onto a stick. The frequency of the beep sound increases as the stick comes closer and closer to the obstacle. Also, Circuit has an LDR to sense the light intensity and an RF remote to locate Stick remotely.

The ultrasonic sensor is the heart of this Arduino-based Alarm stick. It senses the distance from the obstacle and sends this data to Arduino. Arduino further processes this data and thus determines the frequency with which the buzzer produces sound.

Components you need for this project are:

  • Arduino Board
  • Ultrasonic Sensor HC-SR04
  • Buzzer and LED
  • Voltage Regulator L7805
  • LDR
  • 433 MHz transmitter and receiver
  • Perf Board
  • Push button
  • Battery(9 Volt)

Link to the project site is given below:

Smart Blind Stick

HC-SR501 Pyroelectric Infrared Sensor Module

HC-SR501 Pyroelectric Infrared Sensor Module
HC-SR501 Pyroelectric Infrared Sensor Module

About: Pyroelectric Infrared Sensor or PIR Sensor senses the heat energy emitted by a human body in the form of Infrared Radiation.

PROJECT: Using a PIR sensor with Arduino to Control home appliances.

OBJECTIVE:  To interface a PIR Sensor with Arduino and then control(ON/OFF) home appliances                             

Components you need for this project are:

  • Arduino Board
  • HC-SR501
  • 2 Channel Relay Module
  • A.C Appliance

Link to the project Site is given below:

PIR Sensor-Arduino

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