Hey everyone, After two days of trying(in vain) to send/receive/make a call from my SIM300 module to the arduino,and reading up various blogs online,i'm left very confused on what i actually need ,to make the connections. Here are the things i'm using/doing:
1)12v ,1A DC adapter to power the SIM300 module
2)using the software serial library on the IDE and connecting pins 10 and 11(on the arduino) to tx and rx(on SIM300) respectively.
3)connecting the grounds of the arduino and the gsm module.
I read on a couple of blogs, the need for a ttl converter while using the SIM300.Why do we need it,if the max232 chip is already on the board and it can reduce the RS232 volatage level to TTL?? and the hyperterminal??Is that essential,for me to be able to send and receive an SMS??
I'm pretty much a beginner ,having dabbled in fairly basic projects before this and never one with a GSM module, so any help will be appreciated! :-)