Help needed for GSm modem.

[Electronics_chaitanya]

Hello friends




I need your help about GSM modem.Before some day i found one project about controlling home appliances using SMS they used GM47 Modem but i cant found that modem in my town :sad:.So i want to ask that can i use Modem such like SIM300 or SIM900 instead of GM47?


Communication is take place between micro controller and modem by Tx and Rx so is this possible to replace GM47 by SIM300? or SIM900?







Thanks in advance :-D

 

[chipseller]

Seems a reasonable thing to do, they are not especially different. The SIM300 has been obsolete for over a year now, so you will find the '900 easier to get.

 

[sherazi]

you can use it but definitely change but keep in mind that the pin-out is different ... furthermore there might be a small difference in some AT commands.