How to interface sim900 with 8051 microcontroller

[Prabakaran P M]

Hi,

Refer these articles for the basic idea about the GSM interface. In these you can see SIM300 is used, but you can get basic idea about AT commands and Sim900 interface.

http://www.engineersgarage.com/microcontroller/8051projects/gsm-interface-8051-microcontroller-circuit-code

http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code

http://www.engineersgarage.com/microcontroller/8051projects/interface-gsm-module-8051-microcontroller-circuit-code