Thank u sir for your kind help. Thank you very much.
But Sir, I could not get what is RST terminal at the top. And where should I connect the SIM900 module to interpret the SMS Commands. Also the chip MT8770 is used as DTMF decoder. Is it really necessary? and what should I feed into it.
Plz Sir help me. I cannot get hoe to connect the SIM900 module and make it interpret my sms commands like suppose, sending ‘1’ means ON n ‘0’ means OFF. Also can u plz giv me the link to the code on your site.
Thank You Sir very much.
Soubhik.