Arduino based home security and automation.

sir we are doing project that related to security using sensors and at the same time we are making it automation too using GSM shield. so please can u support us by providing us the software related to sensors like LM35,smoke and gas sensor,PIR sensor and GSM shield. Thanking you...

How about some googling?

E.g. google arduino PIR google arduino lm35 I guess you can come up with something for the others.