Fc 51 Ir - Sensor Datasheet

| Feature | FC-51 | HC-SR04 (Ultrasonic) | TCRT5000 (Reflective) | | :--- | :--- | :--- | :--- | | | IR reflection | Sound wave echo | IR reflection | | Output | Digital (HIGH/LOW) | Analog (PWM width) | Analog/Digital (with add-on) | | Max Range | ~30 cm | ~400 cm | ~10 cm | | Color Sensitive? | Yes (dark objects reduce range) | No | Yes | | Cost | Very low ($1-2) | Low ($2-4) | Very low ($0.5-1) | | Best Use | Proximity switch, line follow (short range) | Distance measurement | Line following (very short) |

| Condition | Output Pin | Output LED | | :--- | :--- | :--- | | No object in front | HIGH (1) | OFF | | Object within set range | LOW (0) | ON | The FC-51 features a small, blue potentiometer (variable resistor) on the back of the PCB. Turning this potentiometer changes the comparator’s reference voltage, effectively adjusting the sensitivity. Fc 51 Ir Sensor Datasheet

import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) SENSOR_PIN = 17 GPIO.setup(SENSOR_PIN, GPIO.IN) | Feature | FC-51 | HC-SR04 (Ultrasonic) |

delay(50);

However, finding a consolidated, detailed datasheet for the FC-51 can be challenging. Many sellers provide only basic pinouts, leaving users to guess at critical specifications like current consumption, detection range, and timing characteristics. import RPi