51 Ir Sensor Datasheet !full! - Fc
Decreases the detection distance threshold.
Emits infrared light at a specific frequency (usually 950nm).
| Pin Name | Description | |----------|-------------| | | Power supply (3.3–5V) | | GND | Ground | | OUT | Digital output (0V when obstacle present, Vcc when no obstacle) | | EN | Enable pin (leave floating or pull HIGH to enable; LOW may disable) – not always present on all clones |
The FC-51 is very straightforward to use with any Arduino board. Fc 51 Ir Sensor Datasheet
Digital Signal (TTL levels: LOW when obstacle detected, HIGH when clear) 2cm to 30cm (Adjustable via potentiometer) Detection Angle 35° Effective Angle Comparator IC LM393 Dual Differential Comparator PCB Dimensions Mounting Hole 3mm screw hole for easy physical installation 3. Pin Configuration
When an object enters the sensor's field of view, the emitted IR light bounces off the object's surface.
The module consists of several key parts that handle signal transmission and processing: IR Emitter: Sends out a continuous infrared signal. IR Receiver (Photodiode): Detects the IR light reflected back from obstacles. LM393 Comparator: Decreases the detection distance threshold
When an object enters the detection zone, it reflects the infrared light back toward the sensor.
Automatic faucets, soap dispensers, and hand dryers.
Digital signal (TTL Level: Low when obstacle detected, High when clear) LM393 Voltage Comparator Dimensions 3.2cm × 1.4cm Mounting Hole 3mm screw diameter 3. Hardware Component Breakdown Digital Signal (TTL levels: LOW when obstacle detected,
Illuminates only when an obstacle is detected within the set range. 4. Pinout Configuration
| Parameter | Value | |-----------|-------| | Response Time | ~2–10 ms | | Output Frequency | ~50–100 Hz (typical) | | Settling Time after power-up | <50 ms |
Emits infrared light at a specific frequency.
The FC-51 is an analog/digital infrared (IR) sensor module designed for short-range obstacle detection (2 cm to 30 cm). Unlike Sharp GP2Y0 series sensors (which give analog distance values), the FC-51 typically outputs a simple (HIGH/LOW) when an object is within a preset threshold.
