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Q: What is the detection range of the FC-51 IR sensor? A: The detection range of the FC-51 IR sensor is adjustable, ranging from 2cm to 30cm.
| Feature | Specification | |---------|----------------| | | 3.3V – 5V DC (typical 5V) | | Current Consumption | ~20–30 mA (at 5V) | | Detection Range | 2 cm – 30 cm (adjustable via potentiometer) | | Output Type | Digital (TTL) – 0V or Vcc | | Output Logic | Active LOW (LOW when obstacle detected) | | Sensing Element | IR LED + Phototransistor | | Indicator LED | Power LED (red) + Output LED (red) | | Mounting Holes | 3mm diameter, 33mm pitch | | Dimensions | 32 mm × 14 mm × 8 mm | | Operating Temperature | -10°C to +50°C | Fc 51 Ir Sensor Datasheet
| FC-51 Pin | Arduino Uno Pin | | :--- | :--- | | VCC | 5V | | GND | GND | | OUT | Digital Pin 7 | Q: What is the detection range of the FC-51 IR sensor
This simple sketch prints "OBSTACLE!!" to the serial monitor when an object is detected. A multi-turn potentiometer (blue trim pot) is used
A multi-turn potentiometer (blue trim pot) is used to increase (clockwise) or decrease (counter-clockwise) the sensitivity and detection distance. Operational Notes
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If the reflection is strong enough (meaning an object is close), the module drives its digital output pin ( OUT ) LOW (0V) and illuminates the onboard obstacle indicator LED. If no obstacle is present, the output remains HIGH (VCC) . 2. Technical Specifications Specification Value Operating Voltage (VCC) 3.3V to 5V DC Operating Current ≥is greater than or equal to Output Type