Cytron Maker Reflect IR Reflectance Sensor for Beginner The Cytron Maker Reflect IR Reflectance Sensor is a compact and beginner-friendly module designed to help learners understand how infrared reflectance works in robotics and automation. Using an IR LED and a high-sensitivity phototransistor, it measures how much IR light bounces back from a surface and generates an analog voltage that’s easy for any microcontroller to read. This makes it perfect for exploring concepts like surface detection, black-and-white line following, and reflectivity measurement. Designed by Cytron with simplicity in mind, this sensor is ideal for kids, students, and makers stepping into DIY robotics projects. Its ultra-small size and centered mounting hole allow it to fit even in tight robot designs, while its 3.3V and 5V compatibility ensures smooth use with Arduino, Raspberry Pi, and all common controllers. Whether you're building a line follower, Sumo bot, maze robot, or encoder-based mechanism, the Maker Reflect delivers reliable IR performance with minimal setup. Features: Works as a hands-on IR reflectance sensor that uses an IR LED + phototransistor to measure surface reflectivity for reliable detection. Helps beginners learn analog sensing, line detection, object presence, and robot navigation, building strong STEM fundamentals. Built with safe, durable Cytron components, ensuring stable performance even in beginner-level DIY robotics projects. Fully compatible with 3.3V and 5V systems, making it easy to interface with Arduino, Raspberry Pi, microcontrollers, and robotics platforms. Offers a sensing distance of 1mm to 40mm at 5V (ideal for black/white surface detection and line following). Provides analog voltage output, allowing smooth interpretation of different surface colors and reflectivity. Compact size of 18.1mm × 8.4mm × 4.2mm, with a centered mounting hole for accurate positioning at the front of robots. Suitable for school projects, robotics clubs, and maker experiments - perfect for line followers, Sumo robots, maze solvers, and encoder wheels. Makes a great STEM learning gift for young robotics enthusiasts and beginners exploring IR sensors.

DFRobot -70°C to 380°C TS01 Infrared Temperature Sensor Module Non-Contact Analog The TS01 Non-Contact IR Sensor is a really smart tool for checking the temperature of things from a distance, without any physical contact. It can measure a very broad range of temperatures, from super cold -70°C all the way up to a very hot 380°C. This is very useful for checking machines that are moving, things that are hard to reach, or surfaces that you just shouldn't touch. It uses infrared technology to sense the heat given off by an object and is built to be very reliable. Because it's an IP65 Temperature Sensor, it's well protected from dust and water splashes, making it great for factories, workshops, or even some outdoor uses. This Infrared Temperature Sensor 4-20mA sends out a standard 4-20mA current signal, which is what many industrial machines and PLCs use. This makes it easy to connect to existing systems. For students and hobbyists, you can use a simple converter module to read the signal with boards like Arduino. The Wide Range Temperature Sensor (-70 to 380C) has a strong metal body and special wiring to avoid outside electrical noise, ensuring you get stable and accurate temperature readings. Features Measures Temperature: From -70 degrees Celsius up to 380 degrees Celsius. How it Works: Non-contact, uses Infrared (IR) light. Output Signal: Standard 4 to 20 milliAmp (mA) current. Protection Level: IP65 (dust-tight and protected from water jets). Power Needed: 7.5 Volts to 36 Volts DC. Field of View (FOV): Narrow 5 degrees for precise targeting. Body Material: Strong all-metal casing for durability.

DFRobot A01NYUB Waterproof Ultrasonic Distance Sensor (28-750cm Detection Range) The A01NYUB Waterproof Ultrasonic Sensor is a very useful device for finding out how far away something is, and it’s built tough for outdoor or wet places. It can measure distances from as close as 28cm to as far as 7.5 meters! Because it's fully sealed (that's what IP67 means), you don't need to worry about rain, splashes, or dust getting inside and spoiling it. This sensor is designed to be a dependable Long Range IP67 Sensor that can still give good readings even if the air is a bit smoky or dusty. Connecting this 750cm Ultrasonic Sensor to your project is easy because it talks using a standard UART serial connection, which is something most popular microcontrollers like Arduino or Raspberry Pi can understand without any fuss. The UART Ultrasonic Distance Sensor works by sending out a sound pulse (that humans can't hear) and then listens for the echo to come back, calculating the distance accurately. Dimensions Features Measuring Range: 28cm to 750cm (for flat objects). Waterproof Level: IP67 (totally protected from dust and water). Communication Type: UART (serial output). Works With: 3.3V to 5V power supply. Power Use: Very low, average current is less than 15mA. Response Time: Quick, around 100 milliseconds. Viewing Angle: About 55 degrees (with the bell-mouth attachment). A01NYUB Ultrasonic Distance Sensor with Arduino Circuit Diagram A01NYUB Ultrasonic Distance Sensor with Raspberry Pi Circuit Diagram

DFRobot A02YYUW Waterproof Ultrasonic Distance Sensor - 3-450cm Detecting Range The A02YYUW Waterproof Ultrasonic Distance Sensor is a reliable solution for distance measurement in challenging environments where water and dust protection is essential. With its IP67 waterproof rating, this sensor can be safely used outdoors, in industrial settings, or any application exposed to moisture and dust. The sensor offers an impressive detection range from 3cm to 450cm with a resolution of 1mm, making it suitable for various distance measurement projects from short-range obstacle detection to long-range monitoring. The integrated UART communication interface allows for simple connection to Arduino, Raspberry Pi, or other microcontroller platforms without complex wiring or additional components. This ultrasonic sensor features a compact design with a pre-attached 1-meter waterproof cable, allowing for easy installation in tight spaces or remote locations. The sensor operates on a wide voltage range from 3.3V to 5.5V DC and consumes only 10mA during operation, making it ideal for battery-powered projects. With a blind zone of just 3cm, the A02YYUW can detect objects at very close range, which is particularly useful in robotics and automation applications. The sensor's temperature compensation feature ensures consistent performance across varying environmental conditions, while its narrow 15° beam angle provides focused detection for accurate measurements. Whether you're building a water level monitor, parking assistant, or industrial automation system, this waterproof ultrasonic sensor delivers reliable performance in demanding conditions. Beam Directionalities Diagram Features Detection range: 3cm to 450cm with 1mm resolution Communication: UART interface (9600 baud rate) Waterproof rating: IP67 for complete dust protection and water immersion Operating voltage: 3.3V to 5.5V DC Current consumption: 10mA during operation, 3.5mA in standby Operating temperature: -15°C to 60°C Beam angle: 15° for focused detection Connection Diagram with Arduino Connection Diagram with Raspberry Pi Dimensions

DFRobot Fermion VL6180X ToF Distance Ranging Sensor (Breakout) with Header The Fermion VL6180X ToF Distance Ranging Sensor is a high-precision measurement tool that uses advanced Time-of-Flight technology to detect distances from 5mm to 100mm with millimeter accuracy. Unlike traditional infrared sensors that can be affected by object color or reflectivity, this sensor measures the actual time taken for light to travel to the target and back, providing consistent readings in various lighting conditions. The compact breakout board comes fully assembled with voltage regulation, I2C level shifting, and easy-to-use pin headers, making it perfect for students and hobbyists working on robotics, smart devices, or automation projects. This versatile sensor combines distance measurement with ambient light sensing in one small package, opening up possibilities for many creative applications. The VL6180X communicates through a simple I2C interface, making it compatible with popular platforms like Arduino and Raspberry Pi. With its small size (20.5mm × 15.6mm), low power consumption, and ability to work accurately in changing environments, this sensor is an excellent choice for gesture detection, object presence sensing, and precise distance measurement in tight spaces. Whether you're building a line-following robot, a touchless switch, or a smart inventory system, this ToF sensor provides reliable measurements for your electronics projects. Features Detection range: 5mm to 100mm with millimeter-level accuracy Integrated ambient light sensor with adjustable sensitivity Operating voltage: 3.3V to 5V DC with onboard voltage regulation Communication: I2C interface (address 0x29 by default) Compact dimensions: 20.5mm × 15.6mm × 3.1mm Immune to target color and reflectivity variations Compatible with Arduino, Raspberry Pi, and other microcontroller platforms DFRobot Fermion VL6180X ToF Distance Ranging Sensor with Arduino Connection Diagram

DFRobot SLAMTEC RPLiDAR A1M8 360 Degree Laser Range Finder – 12m Radius Range The RPLIDAR A1M8 is like a pair of eyes for your robot, letting it see everything in a full circle around itself. This advanced 360 Degree LiDAR Scanner spins around and uses a laser to quickly measure distances to objects up to 12 meters away. It creates a digital map of its surroundings, which is super useful if you're building a robot that needs to move around a room, avoid bumping into things, or even clean your house automatically. It takes up to 8000 distance readings every single second, so the maps it makes are quite detailed. Students and hobbyists will find this 12m Laser Range Scanner fantastic for all sorts of cool projects, especially for learning about robot navigation and SLAM (Simultaneous Localization and Mapping – which means the robot can figure out where it is while making a map at the same time). Thanks to its clever OPTMAG design, this SLAM LiDAR Sensor doesn't use old-style parts that wear out, so it's built to keep working for a long, long time (up to five years). It's designed to be easy to get started with, often just needing a simple USB connection. Features Scanning Range: Sees all around (0 to 360 degrees). Distance Measurable: From 0.15 meters up to 12 meters. How Fast it Scans: Takes up to 8000 distance samples per second. Spinning Speed: Adjustable from 2 to 10 times per second (Hz). Long Life Design: Uses OPTMAG technology for better durability (up to 5 years). Easy to Connect: Usually via USB adapter (often included in kits).

HC-SR-04 Ultrasonic Sensor The HC SR04 ultrasonic sensor is used to detect the distance of an object between 2-400cm with an accuracy of up to 3mm. This hc sr04 ultrasonic sensor is based on the SONAR principle and hence its working is not affected by sunlight or other ambient lighting conditions making it ideal for outdoor applications also. The sensor works by transmitting a signal and starting a timer simultaneously, it then stops the timer when the receiver receives the signal after bouncing back from the object. Note: The HC-SR04 has a 5V output (which needs to be reduced to 3.3V to work with the Raspberry Pi). Applications: Used to avoid and detect obstacles with robots like biped robots, obstacle avoider robots, path finding robots, etc. Used to measure the distance within a wide range of 2cm to 400cm Can be used to map the objects surrounding the sensor by rotating it Depth of certain places like wells, pits, etc. can be measured since the waves can penetrate through the water

HC-SR04 Ultrasonic Sensor The HC-SR04 Ultrasonic Sensor Module is a popular tool for measuring distance and detecting objects. It’s small, easy to use, and combines everything you need—a transmitter, receiver, and control circuit—in one module. It works like a sonar, sending out sound waves to measure the distance to objects, just like how bats and dolphins sense their surroundings. This HC-SR04-Ultrasonic Range Finder can measure distances from 2 cm up to 400 cm with high accuracy, about 3 mm. It’s reliable for many projects, from robotics to simple object detection, and works well even in different lighting conditions. This HC SR04 ultrasonic distance sensor module has two main pins, Trigger and Echo, which connect easily to microcontrollers like Arduino, making it perfect for projects where you need non-contact distance sensing. Check out the best selection of Distance Sensors . Note: The HC-SR04 sensor has a 5V output (which needs to be reduced to 3.3V to work with the Raspberry Pi). Read our blog on how to connect ultrasonic sensor to Raspberry Pi. Features: Non-Contact Distance Sensor Measures 2cm to 400cm Sonar technology for accuracy Suitable for robotics and DIY projects Stable performance indoors and outdoors Durable materials Easy to install, user-friendly 5V DC power supply High resolution: 0.3 cm Best ultrasonic sensor for Arduino and Raspberry Pi projects Applications: Used to avoid and detect obstacles with robots like biped robots, obstacle avoider robots, path-finding robots, etc. Used to measure the distance within a wide range of 2cm to 400cm Can be used to map the objects surrounding the sensor by rotating it The depth of certain places like wells, pits, etc. can be measured since the waves can penetrate through the water Read our blog explaining the ultrasonic sensor working . Pinout

HC-SR04 Ultrasonic Distance Sensor Module (Pack of 20) This is a Ultrasonic Distance Sensor Module of 20 Quantity. Ultrasonic Module HC-SR04 Distance Sensor can measure the distance to an object by using echo. It can measure the distance between the sensor and the object by the time from the sound wave of a specific frequency to the time when the sound wave is heard to bounce back. The HC-SR04 Ultrasonic Distance Sensor Pack of 20 is perfect for all kind of projects that need distance measurements, e.g. avoiding obstacles. HC-SR04 provides 2cm-500cm non-contact measurement function, the ranging high accuracy can reach to 3mm. Features: Measurement Range: 2 cm to 400 cm (0.8 inches to 13 feet) Accuracy: Approximately 0.3 cm (0.1 inches) Power Supply: 5V DC Current Consumption: Quiescent current: < 2mA Working current: ~15mA Measuring Angle: Effective angle < 15 degrees Dimensions: 45mm x 20mm x 15mm Applications: Can be used with Arduino to make robotic projects based on distance, position & motion sensing. Can be used in obstacle avoiding robot. Can be used in IoT devices using any other Microcontroller board. Take a look at our blog on interfacing ultrasonic sensor with Arduino . Whether you're new to this or already have some experience, this guide will make things clear for you to understand ultrasonic sensor interfacing with Arduino.

IR Proximity Sensor The IR Proximity Sensor has a distance range of 2cm to 30cm and it is ideal for obstacle detection, line tracking, and more. It is designed for easy setup and has onboard detection indication to verify its status. A preset knob allows you to fine-tune the distance range for more accurate readings. This IR Sensor is best for IoT projects, such as creating automatic sanitizer dispensers and home automation systems. This infrared sensor is suitable for various applications in industrial, automotive, and consumer electronics settings. This sensor offers unbeatable value for money while ensuring optimal accuracy and efficiency in all your projects. The detection range of the infrared proximity sensor can be adjusted by the potentiometer. Read our blog proximity sensor working principle . Enjoy our free shipping on orders above Rs 500/- within India. Features: Easy to assemble and use Onboard detection indication The effective distance range of 2cm to 30cm A preset knob to fine-tune distance range If there is an obstacle, the indicator lights on the circuit board. Infrared Sensor Applications: IP cameras Alarm systems and other crime prevention devices Battery-driven human presence sensors for IoT smart homes IR sensors are also used in IR imaging devices, optical power meters, sorting devices, remote sensing, flame monitors, moisture analyzers, night vision devices, infrared astronomy, etc. Infrared Sensor Diagram: The IR proximity sensor circuit diagram consists of the following components: LM358 IC Resistors in the kilo-ohm range 2 pairs of IR transmitter and receiver LED Variable resistors IR sensor pinout