GPS Tracking

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i'm creating real-time vehicle tracking android application using arduino uno , sim900 gps. want use firebase database coordinates hold longitude , latitude. question sending data through gprs firebase. right i've been able use terminal program send @ commands create connection i've been getting errors when connecting firebase using at+cipsend. know excepts https traffic i've been trying commands here.

quote
but i've been getting errors when connecting firebase using at+cipsend.
no context + no code + no error messages == no help.


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