This infrared sensor detects objects up to 3cm away. With an infrared LED and a phototransistor it detects objects or black-white changes for line following robots or edge detection.
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Our Code: MCU-60220
Supplier Link: [SparkFun MPN:246]
Internally this sensor has an infrared LED that emits light that is reflected back from objects and detected by the photo transistor. Hooking it up requires a few resistors as this is really two components in one. Check this hookup guide for details.
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