I have a Grove Base Shield and it seems that it does not work with Arduino Mega and it works for Arduino Uno (it says it is compatible to Arduino Mega)

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Hi Bill,

Thank you very much for the detailed response.

The UART was used for communicating with pc. Do you think if it is possible to use the Grove gps by coonecting to pin 13 and 14 of mega while using the base shield for other sensors?
Best regards,

Jian