The Sharp GP2Y0A21YK is a highly popular analog distance sensor that measures distances between 10 cm and 80 cm using infrared light. It is ideal for robotic navigation, obstacle avoidance, and proximity detection.Key Technical Specifications

• Sensing Range: 10 cm to 80 cm
• Operating Voltage: 4.5V to 5.5V DC
• Average Current Consumption: ~30 mA
• Output Type: Analog Voltage
• Output Voltage Range: ~3.1V at 10 cm to ~0.4V at 80 cm
• Dimensions: 44.5 mm 18.9 mm 13.5 mm

Pinout ConfigurationThe sensor usually comes with a 3-pin JST connector or pigtail wires:

• Red wire: VCC (Power, +5V)
• Black wire: GND (Ground)
• Yellow/White wire: Analog Output signal