dizgah
Member level 5
hi every body
with using of a sim900a minum board i did a simple project & know i want to make my own pcb for that ,but i design & make more than 6 pcb & test more than 10 sim900a but none of them dosent work
power supply is same with my last minimum board(worked there) schematic is simcoms schematic .
i am really mixed up ,
module only response this characters:
can any body help please ?
with using of a sim900a minum board i did a simple project & know i want to make my own pcb for that ,but i design & make more than 6 pcb & test more than 10 sim900a but none of them dosent work
power supply is same with my last minimum board(worked there) schematic is simcoms schematic .
i am really mixed up ,
module only response this characters:
can any body help please ?