Fc 51 Ir Sensor Datasheet Online

When an object comes within the sensor’s field of view, the IR light bounces off the object and into the phototransistor. The onboard comparator circuit (usually an LM393 chip) then processes the signal and outputs a clean , which can be read directly by a microcontroller.

import RPi.GPIO as GPIO import time

| Feature | FC-51 | TCRT5000 (Reflective) | Sharp GP2Y0A21 (Analog) | |---------|-------|------------------------|---------------------------| | Output | Digital | Digital (needs comparator) | Analog voltage | | Range | 2–30 cm | 1–15 cm | 10–80 cm | | Distance measurement | No | No | Yes | | Cost | $1–2 | $0.5–1 (bare) | $10–15 | Fc 51 Ir Sensor Datasheet

The operational limits of the module heavily dictate its deployment in embedded systems: 3.0V to 6.0V DC (Standard TTL levels) Current Consumption: ~23 mA at 3.3V | ~43 mA at 5.0V When an object comes within the sensor’s field