Fc 51 Ir Sensor Datasheet Hot!

The FC-51 is an infrared (IR) proximity sensor module widely used for obstacle avoidance in robotics and automation. It works by emitting an infrared beam and detecting its reflection off a nearby object. Visual Overview

• Turn clockwise to increase range (detect farther).
• Turn counter-clockwise to decrease range (detect only very close objects).

Electrical characteristics (typical values)

• Supply voltage (Vcc): 3.3–5 V (commonly 5 V; module contains comparator tolerant to 5 V).
• Operating current: ~20–40 mA (emitter + receiver + indicator; varies).
• Output type: Digital (TTL) — active HIGH or LOW depending on module wiring; some versions provide both digital OUT and analog OUT.
• Output voltage: ~0 V (LOW) or Vcc (HIGH).
• Response time: Fast (ms range) — suitable for realtime sensing. Note: exact values vary by manufacturer; consult specific vendor datasheet for precise numbers.

Security: Simple proximity alarms or "black/white" line tracking for basic line-following robots. Usage Tip Fc 51 Ir Sensor Datasheet

Detection Range: Adjustable from 2cm to 30cm (some variants reach up to 80cm). Detection Angle: Approximately 35°. The FC-51 is an infrared (IR) proximity sensor

Digital signal (LOW when obstacle detected, HIGH when clear) Dimensions PCB: 3.1 cm x 1.4 cm; Overall: 4.5 cm x 1.4 cm x 0.7 cm Interface and Components Pinout: VCC: Power input (3.3V - 5V). GND: Ground connection. OUT: Digital output pin. Onboard Indicators: Power LED: Remains lit while the module is powered. Turn clockwise to increase range (detect farther)

Arduino Sample Code: