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Trigger D0 GPIO notifications

• Make sure you have a Node-RED flow enabled that listens to /oap notifications (see Lab 15. receive temperature )

• 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.

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