Follow me Season 2 Episode 1 Basic Task 3 (Must Do): Proximity Detection

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Follow me Season 2 Episode 1 Basic Task 3 (Must Do): Proximity Detection [Copy link]

 

Here we use two onboard infrared LEDs, one for transmitting and one for receiving, to determine the set threshold. It should be noted that the infrared light-emitting tube should emit light in a flashing manner to avoid overheating and burning.

The code is as follows

exhibit

Since the picture cannot show the approaching process, please refer to the demonstration video