Sharp GP2Y0A21YK0F Infrared Distance Sensor – 10cm to 80cm Analog Output
Product Description
The Sharp GP2Y0A21YK0F Infrared Distance Sensor is a non-contact distance measurement sensor designed for robotics, automation, obstacle detection and embedded electronics projects. It uses infrared sensing technology to measure the distance to nearby objects within an approximate range of 10cm to 80cm.
The sensor provides an analog voltage output that varies with the detected distance, allowing compatible microcontrollers to read measurements through an analog input. It is suitable for integration with Arduino, ESP32, Raspberry Pi systems with an appropriate analog-to-digital converter (ADC), and other compatible development platforms.
With its compact design and practical sensing range, the GP2Y0A21YK0F is a useful choice for mobile robots, obstacle avoidance systems, smart devices, educational electronics and distance-monitoring applications.
Key Features
Infrared Distance Measurement: Detects objects without physical contact.
10cm to 80cm Range: Suitable for short- to medium-range proximity sensing.
Analog Voltage Output: Provides a distance-dependent signal for microcontroller interfacing.
Sharp Sensor Model: GP2Y0A21YK0F.
Compact Design: Convenient for integration into robots and embedded systems.
Obstacle Detection: Helps robots detect nearby objects and obstacles.
Microcontroller Integration: Suitable for compatible Arduino and other development boards.
Versatile Applications: Useful for robotics, automation, educational projects and smart devices.
Technical Specifications
Parameter | Specification |
Product Name | Sharp Infrared Distance Sensor |
Model Number | GP2Y0A21YK0F |
Sensing Technology | Infrared (IR) |
Measurement Range | Approximately 10cm–80cm |
Output Type | Analog voltage |
Measurement Method | Non-contact distance sensing |
Interface | Analog signal output |
Suitable Applications | Robotics, obstacle detection, automation |
Microcontroller Compatibility | Arduino, ESP32 and other compatible systems |
Applications
Robot obstacle avoidance
Mobile robot navigation
Distance measurement projects
Smart automation systems
Embedded electronics development
Educational robotics and STEM projects
Object proximity detection
Interactive electronic devices
Industrial and experimental automation prototypes
Package Includes
1 × Sharp GP2Y0A21YK0F Infrared Distance Sensor
Important Notes
ESP32 compatibility: Check the sensor's output voltage range before connecting it to an ESP32 ADC input. Use suitable voltage scaling if required.
Raspberry Pi compatibility: Most standard Raspberry Pi boards do not have a built-in analog input, so an external ADC is needed to read the sensor's analog output.
Measurement limitations: Readings can vary depending on the target's surface, reflectivity, angle and ambient lighting.
Minimum range: The sensor is not intended for reliable measurements below its specified minimum distance of approximately 10cm.
Verify the supplied sensor's connector, cable and power requirements against the manufacturer's datasheet before installation.
The Sharp GP2Y0A21YK0F is a practical distance-sensing solution for makers, students and developers building robotics and embedded electronics projects.
