Control and Monitor via SMS

[mzakmal87]

Hi,

Just want checking, can i change the RS232 SIM900 with GMS TC35? if possible, how would be the connection and does it require to connect with LC04A? Then how long the MCU will shown ready at LCD display, because almost 1 hour but still shown testing comm on the LCD display? Please guide and thank you.

[ober]

Well, you will need to check the protocol of both these modems, it is all based on the protocol. If the protocol are same, it can be inter-change and still function.

RS232 SIM900 uses RS232/COM port for connection, if the original connection uses COM port, replace it directly with the RS232 connector on TC35 modem, no LC04A is needed.

Not really understand what do you mean by the testing comm on LCD, are you referring to specific tutorial of link? Please provide it clearly.