Sharp GP2Y0A21YK0F IR Range (Distance) Sensor 10-80cm + Cable
The Sharp GP2Y0A21YK0F IR Distance Sensor is a reliable infrared proximity sensor that measures distances from 10 cm to 80 cm. It emits an IR beam and detects the reflection to calculate distance, providing a clean analog voltage output that can be easily read by Arduino or any microcontroller. Powered by 4.5V–5.5V with low current consumption (~30 mA), and supplied with a connection cable, it's perfect for robotics, obstacle avoidance, and proximity-sensing applications.
حساس Sharp GP2Y0A21YK0F هو حساس مسافة بالأشعة تحت الحمراء موثوق، يقيس المسافات من 10 إلى 80 سم. يُطلق شعاعاً تحت الأحمر ويلتقط انعكاسه لحساب المسافة، ويُخرج إشارة جهد تناظرية يسهل قراءتها عبر Arduino أو أي متحكم دقيق. يعمل بجهد 4.5 إلى 5.5 فولت باستهلاك منخفض (~30 مللي أمبير)، ويأتي مع كابل توصيل جاهز، مما يجعله مثالياً لتطبيقات الروبوتات وتجنب العوائق واستشعار القرب.
The Sharp GP2Y0A21YK0F IR Range Sensor is one of the most popular and trusted infrared distance measuring sensors in the maker and robotics community. Designed by Sharp Corporation, this sensor delivers accurate, continuous distance readings within a range of 10 cm (~4 inches) to 80 cm (~30 inches) by emitting an infrared beam and detecting its reflection through an integrated PSD (Position Sensitive Detector).
The sensor outputs a continuous analog voltage that is proportional to the distance of the detected object, allowing easy interfacing with any microcontroller's ADC (Analog-to-Digital Converter) input — including Arduino, ESP32, STM32, Raspberry Pi (with ADC), and PIC. The simple 3-wire interface (VCC, GND, Vo) and included JST connection cable make installation and prototyping fast and hassle-free.
Unlike ultrasonic sensors, the GP2Y0A21YK0F is immune to acoustic noise and works reliably with soft, sound-absorbing surfaces such as fabric, foam, and irregular shapes. Its compact form factor, low current consumption (~30 mA), and stable output make it an ideal choice for mobile robots, obstacle avoidance systems, security devices, and industrial automation.
This sensor is the modern replacement for the discontinued GP2D12 and is lead-free / RoHS compliant, ensuring environmentally friendly performance.
Specifications
- Model: Sharp GP2Y0A21YK0F
- Sensor Type: Infrared (IR) Distance Measuring Sensor
- Detection Range: 10 cm to 80 cm (~4" to ~30")
- Output Type: Analog Voltage
- Input Voltage Range: 4.5V – 5.5V DC
- Recommended Operating Voltage: 5V DC
- Average Input Current: ~30 mA
- Interface: 3-wire (VCC, GND, Vo)
- Connector: JST Cable Included
- Compliance: RoHS / Lead-Free
- Replaces: Discontinued GP2D12
Applications
- Mobile Robotics — obstacle detection and avoidance for differential-drive robots
- Autonomous Vehicles — small-scale RC and self-driving prototypes
- Line-Following & Maze-Solving Robots — wall detection and navigation
- Industrial Automation — object presence detection on conveyor belts
- Security & Alarm Systems — short-range intrusion detection
- Smart Home Devices — proximity-triggered lights and dispensers
- 3D Printer Calibration — bed leveling and object positioning
- Educational & STEM Projects — Arduino and Raspberry Pi learning kits
- Interactive Art Installations — gesture and presence detection
- Touchless Switches & Kiosks — hands-free triggering systems
- Liquid Level Detection — non-contact tank monitoring (with reflective surface)
- Drone Altitude Sensing — short-range terrain following