Dec 13, 2011 #1 C cheenu02 Junior Member level 3 Joined Jun 16, 2011 Messages 31 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 1,500 hi, I am using using SIM900a to send sms in my project.It was worked fine till yesterday.The problem is it is restarting continuously from today morning onwards.The output is like this RDY +CFUN: 1 +CPIN: READY Call Ready RDY +CFUN: 1 +CPIN: READY Call Ready RDY +CFUN: 1 +CPIN: READY please help me
hi, I am using using SIM900a to send sms in my project.It was worked fine till yesterday.The problem is it is restarting continuously from today morning onwards.The output is like this RDY +CFUN: 1 +CPIN: READY Call Ready RDY +CFUN: 1 +CPIN: READY Call Ready RDY +CFUN: 1 +CPIN: READY please help me
Dec 14, 2011 #2 E elex101 Newbie level 6 Joined Apr 29, 2010 Messages 12 Helped 2 Reputation 4 Reaction score 2 Trophy points 1,283 Location Philippines Activity points 1,349 Can you share your schematic.
Mar 13, 2014 #3 S sukumar Junior Member level 3 Joined Nov 18, 2006 Messages 31 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,286 Activity points 1,464 Check the input voltage to the module. It must be atleast 4.1.
Mar 13, 2014 #4 nandhu015 Advanced Member level 5 Joined Feb 11, 2006 Messages 1,960 Helped 300 Reputation 600 Reaction score 222 Trophy points 1,353 Location India Activity points 9,924 Commonly it happens when the supply voltage drops below the brown out level of the module. Increase the supply current (the power supply should able to supply around 1.5Amps for a short period)
Commonly it happens when the supply voltage drops below the brown out level of the module. Increase the supply current (the power supply should able to supply around 1.5Amps for a short period)