Newbie level 6
I bought a SIM 300 development board and I connected it with the PC and It works fine. I can send SMS and everything. But when I connect SIM300 developement board with PIC16F877A microcontroler, it does not work. I connected Rx and Tx pins through MAX232 and the GND pins only(Same as when communicating between PC and PIC16F877A). I want to send and receive SMS. Can anyone Help me Please. It's urgent!!