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Answer 1:

Trigger D0 GPIO notifications

  • Connect a jumper between the DP2 and VSUPPLY pins. Make sure you receive a notification.

  • Move the jumper to connect the DP2 and GND pins. Make sure you receive a notification.

  • You can transition the jumper between the two positions above to generate further notifications.
     

Warning

NEVER

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CONNECT VSUPPLY

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and GND TOGETHER!!