I am on a mobile phone and cannot check data sheet for you PIC but I thing you cannot use 115k with 4Mhz xtal.
As for the TTL level use it directly to Pic without max232.
Re: help me I need code Sim900 + PIC16F877A
I am on a mobile phone and cannot check data sheet for you PIC but I thing you cannot use 115k with 4Mhz xtal.
As for the TTL level use it directly to Pic without max232.
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