matxt
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Hello fellow, after several days searching google and reading the datasheet, I can not find the solution to my problem and I appeal to your kindness and intelligence. ;-)
I designed my own hardware, not achieving the sim908 reply me any AT command, I do not get OK, or RDY. I paired the DTE baudrate (ATmega2560) and modem communication port to 9600.
Netlight LED is always on and does not understand that I may be doing wrong,
Any help ???
:-(
Facts:
ATmega2560 MCU, hardware own development.
Power supply, the entire circuit 3A 4.6V.
I designed my own hardware, not achieving the sim908 reply me any AT command, I do not get OK, or RDY. I paired the DTE baudrate (ATmega2560) and modem communication port to 9600.
Netlight LED is always on and does not understand that I may be doing wrong,
Any help ???
:-(
Facts:
ATmega2560 MCU, hardware own development.
Power supply, the entire circuit 3A 4.6V.