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Rapid Online - Rapid Electronics Ltd.£3.48Visit shop Seeed 101020010 Grove - Ultrasonic Ranger Distance Sensor 3cm to 4m 5V
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The Grove - Infrared Reflective Sensor is designed for hobbyists and developers using platforms like Raspberry Pi and Arduino who need to detect surface reflectivity. Its key benefit is enabling projects that react to surface color or object presence, such as line following or proximity detection. A potential caveat is that ambient light conditions can sometimes affect readings, requiring careful placement or calibration.
| Model Part Number | 101020174 |
|---|---|
| Brand | Seeed Studio |
The effective range is typically very short, usually within a few millimeters to a centimeter, depending on the surface reflectivity and ambient light conditions. It is designed for close-proximity detection.
The sensor detects reflectivity, not color directly. It can differentiate between light and dark colors, or between shiny and matte surfaces, based on how much infrared light they reflect.
Yes, the sensor emits its own infrared light, so it can function in complete darkness by detecting the reflection of its emitted light.
The Grove - Infrared Reflective Sensor typically operates on 3.3V or 5V, depending on the Grove shield or base board it is connected to.
No, this sensor is designed to detect differences in reflected light from surfaces. It cannot reliably detect transparent objects.
The digital output provides a simple HIGH/LOW signal indicating if the reflected light exceeds a preset threshold (often adjustable via a potentiometer). The analog output provides a variable voltage proportional to the amount of reflected light, allowing for more detailed readings.
Ensure the sensor is properly connected to the Grove port and the microcontroller. Check that the surface has sufficient reflectivity contrast. Verify that the code is correctly reading the digital or analog pin.
Ambient light can interfere. Try shielding the sensor from external light sources or implement software filtering/calibration to account for ambient light levels. Ensure the sensor is at an appropriate distance from the surface.
Adjust the onboard potentiometer (if available on your specific module variant) to fine-tune the digital threshold. Ensure the surface reflectivity meets the threshold set by the potentiometer and ambient conditions.
Setup: Connect the sensor to a Grove Base Shield or compatible microcontroller using the provided Grove cable. Ensure the sensor is oriented to face the surface to be detected. For digital output, connect to a digital I/O pin. For analog output, connect to an analog I/O pin.
Compatibility: This sensor is compatible with microcontrollers that support 3.3V or 5V logic, such as Arduino boards and Raspberry Pi, when used with a suitable Grove interface board.
Care: Keep the sensor lens clean from dust and smudges. Use a soft, dry cloth for cleaning. Avoid exposing the sensor to excessive moisture or direct sunlight for prolonged periods, as this can affect performance. Store in a dry environment.
