mhmdtanveer:
Hello,I am facing the same issue as you did. I get junk characters that range from chinese symbols to ones that look like the pound symbol. I have a arduino board connected to the SIM900 module and I am using the Serial Monitor to see the results.
As far as I can see, when I set it at 19200 baud rate, I get a set of junk characters, but while its set at 9600, I get an entirely different set of junk letters. I can assure you that the GSM board is working perfectly fine since its blinking as well as I can call it.
I have set the baud rate at the Control panel level, the arduino level, the gsm level as well as the serial monitor level.
Connections: GSM Tx - Pin 7 Arduino | GSM Rx - Pin 8 Arduino | GSM GND to Ardunio GND
Any help?
i'm having same issues here.. but my problem is bit different because my module shows mixed characters, some of which are what i sent and others are unrecognizable.
its been a week now that i'm trying to solve the issue. but nothing goes right.