Most of automated robotic projects start from a line-following robot, Grove – Line finder v1.1, designed to achieve this task easily and quickly. Those eye-like sensors on the board are actually IR emitting LED and sensitive phototransistor. When the phototransistor detects the reflected infrared light from the IR emitting LED, it will output a digital signal, which changes from HIGH to LOW.
Features:
- Easy to use
- Integrated indicator LED
- Digital output
- Adjustable detecting range.

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