Interfacing GSM

[Hari Prasaath K]

Hi,

There are many models are avaible in GSM modem. Normally you can use SIM900, SIM 800 models for interfacing with 8051 that cost around Rs. 800 to Rs. 1500 you can buy it through online. For your interfacing reference the link is attached below.

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