Reflective IR Sensor with 470 and 10K Resistors

Adafruit IndustriesSKU: RB-Ada-203
Manufacturer #: 2349

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Sale price £1.87

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Only 2 units left

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  • Reflective IR sensor
  • Comes with a 470 ohm resistor
  • Breadboard friendly sensor and easy to solder 
  • Best working range: 2mm to 10mm

The Reflective IR Sensor with 470 and 10K Resistors is a simple plastic casing with two elements - an IR LED and an IR phototransistor. You can control the IR LED and turn it on to bounce IR off objects to determine their reflectivity. White & light colored stuff will bounce the light, so you can detect it. Black & dark colored stuff will absorb the IR light so that it isn't detected. Likewise, if something isn't in the way of the sensor, it won't trigger either. Comes with a 470 ohm resistor and a 10K resistor which you can use as a pull-up resistor for the phototransistor. The sensor is breadboard friendly and easy to solder to. This works best when detecting a light-colored object approximately 5mm away - 2mm to 10mm worked fairly well but your results may vary with the LED brightness, object shininess, etc.

Reflective IR Sensor with 470 and 10K Resistors- Click to Enlarge

  • Size: 15mm x 18mm x 5mm / (0.6" x 0.7" x 0.2")
  • Weight: 1g

Customer Reviews

Based on 1 review
short range

I received this in quick time. It was good that the vendor supplied the resistors for the reference config. I should have paid more attention. 2 - 10mm range was too short for my obstacle detection application. Particularly as my bot would cover that distance in a very short time. Giving little time to take action on obstacle detection.

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