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Hi
There are several possibilities for this situation,
First: Whether the line connection of the ultrasonic module is correct and whether the ultrasonic wave is hot, and whether the power supply wiring and the signal line are connected incorrectly.
Second: the poor contact between the driver board and the UNO board. Refer to the following figure to tidy up the pins and replace them on the UNO board.
Third: Whether the ultrasonic wiring is faulty, try other conductors, They have arched 10 wires.
The fourth: try again to download the code。 |
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