IR Sensor Module (FC-51
The FC-51 IR Obstacle Avoidance Sensor Module is an infrared proximity sensor designed to detect nearby objects without physical contact. It uses an infrared L…
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Overview
The FC-51 IR Obstacle Avoidance Sensor Module is one of the most common infrared sensors available from Chinese manufacturers. It emits infrared light and detects the reflected signal from nearby objects. An onboard potentiometer allows adjustment of the detection distance, while indicator LEDs show power and object detection status.
It is widely used in obstacle-avoiding robots, automatic doors, object counters, smart vehicles, and industrial automation projects.
Specifications
Sensor Type: Infrared Obstacle Avoidance Sensor Comparator IC: LM393 Dual Voltage Comparator Operating Voltage: 3.3 V to 5 V DC Current Consumption: Approximately 15–20 mA Detection Distance: Approximately 2 cm to 30 cm (Adjustable) Infrared Wavelength: 940 nm Detection Angle: Approximately 35° Output Type: Digital Output (DO) Digital Output Level: LOW when object is detected, HIGH when no object is detected Sensitivity Adjustment: Onboard Potentiometer Interface: VCC, GND, DO (Digital Output) Indicator LEDs: Power LED, Detection Status LED Response Time: Less than 2 ms Module Operating Temperature: -25°C to +85°C PCB Dimensions: Approximately 41 × 15 mm Weight: Approximately 3–5 g
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