SIM868 confusion

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hello everyone,

i reading datasheet , application note of new sim868.i cant figure out modem uart.

where connect arduino send @ commands , response.i used older modules had 1 serial interface , clear.


sim868 has 2 uart(1 , 2),1 gps_uart , usb uart.

the hardware design manual (http://www.mt-system.ru/sites/default/files/documents/sim868_hardware_design_v1.00_0.pdf) states standard communication using @ commands uart1 has used. connect module arduino level converter necessary, above document shows simple circuit implement one.


Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > SIM868 confusion


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