No response from sim300 module when connected with Atmega 16.

[Pravin Poudel]

Dear sir,

I am going to interface sim300 moudule with Atmega 16.When i connect this module with pc and communicate through hyper terminal it’s working properly  but when i connect this module with Atmega 16 with F_CPU 12 mhz and baudrate of 9600 no response from the gsm module so how to solve this problem?

[AJISH ALFRED]

Hi Praven,

Connect your atmega16 to the hyperterminal and see if it is sending the required AT commands

[Sandeep]

I am having the same problem .

 

As Ajish told check if the right commands r comming out of ur AVR 

 

download realterm from d link

 

http://sourceforge.net/projects/realterm/

 

go to display tab and check the ” Hex+Ascii” to see the exact hex value u r sending out 

 

and do the same for SIM900 i.e send ur AT command in “Hex+Ascii” and check if both are same

 

I have done all dis and everything is fine but still my SIM900 is not responding

 

I am finnding out next steps for troubleshooting

[Author]

Posts