Fc 51 Ir Sensor Datasheet New! -

Used in sanitary environments to trigger devices (like hand sanitizers or water faucets) without physical touch. Technical Limitations and Considerations

Note: Values are typical for most generic modules. Always verify with your specific vendor.

When designing circuits with the FC-51, understanding its absolute electrical and physical limitations is crucial. Below are the standard datasheet specifications: 3.3V to 5V DC Operating Current: ≥is greater than or equal to

The LM393 comparator compares the voltage from the photodiode against a reference voltage set by the onboard potentiometer.

Suitable for obstacle detection at low to medium speeds (e.g., small robots, conveyor belts). Fc 51 Ir Sensor Datasheet

FC-51 Sensor Arduino Uno / Microcontroller +--------------+ +--------------+ | VCC |------------------->| 5V | | GND |------------------->| GND | | OUT |------------------->| Digital Pin 2| +--------------+ +--------------+ Pull-Up Resistor Notice:

The FC-51 operates on the principle of infrared light reflection and comparative voltage thresholds.

The FC-51 module relies on the reflection of infrared light to detect the presence of objects. How It Works:

2cm to 30cm (Adjustable via onboard potentiometer) Detection Angle: 35° Used in sanitary environments to trigger devices (like

Smooth, glossy surfaces offer specular reflection, producing consistent detection. Rough, matte, or transparent objects scatter or pass light through, drastically hurting accuracy.

The detection range can be fine-tuned using the onboard multi-turn potentiometer. Turning it clockwise increases the detection distance, while turning it counterclockwise decreases it.

If the reflected light is strong enough to pass the threshold, the LM393 pulls the OUT pin LOW and illuminates the green "Obstacle" LED. The Impact of Color and Material

// Since output is Active LOW, "LOW" means object detected if (sensorState == LOW) digitalWrite(ledPin, HIGH); Serial.println("Obstacle detected!"); else digitalWrite(ledPin, LOW); Serial.println("Path clear"); When designing circuits with the FC-51, understanding its

The FC-51 usually features a 3-pin header for easy connection: Power input (3.3V – 5V). GND: Ground connection. OUT: Digital output signal. Typical Applications Obstacle avoidance for smart cars or robots.

Understanding the hardware physical layout helps in tuning and troubleshooting the device:

I can provide customized code, wiring layouts, or hardware optimization tips for your setup. Share public link