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Fc 51 Ir Sensor Datasheet ^new^ Today

FC-51

The is a low-cost infrared (IR) obstacle avoidance sensor module commonly used in robotics for short-range detection. It functions by emitting an IR signal from a transmitter LED; if an object is within range, the IR light reflects back and is detected by a receiver phototransistor, triggering a digital signal . Core Technical Specifications Specification Operating Voltage 3.0V – 6.0V DC Detection Range 2cm – 30cm (Adjustable via onboard potentiometer) Detection Angle Approximately 35° Current Consumption ~23 mA at 3.3V / ~43 mA at 5.0V Output Type

FC-51 IR Sensor

The is a popular, cost-effective module used widely in robotics for obstacle avoidance and proximity detection. Using a simple infrared "reflection" principle, it identifies objects by bouncing IR light off surfaces and measuring the return signal. FC-51 Key Technical Specifications Specification Operating Voltage 3.0V – 6.0V DC Detection Range 2cm – 30cm (Adjustable via onboard potentiometer) Detection Angle Current Consumption ~23 mA at 3.3V; ~43 mA at 5.0V Output Type Digital signal (0 or 1) Onboard IC LM393 Dual Comparator Pinout Configuration Fc 51 Ir Sensor Datasheet

re-aligning the IR emitter and receiver LEDs

If you find the detection range is too short (e.g., under 10cm), try . Pushing them slightly closer or ensuring they are perfectly parallel can sometimes improve the range up to 30cm. FC-51 The is a low-cost infrared (IR) obstacle

Operating Voltage

| 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 | Emitter : Infrared LED Detector : Photodiode Wavelength

GPIO.setmode(GPIO.BCM) SENSOR_PIN = 17 GPIO.setup(SENSOR_PIN, GPIO.IN)

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