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Tips and questions relating to the GPS modules from SFE
By shashankmutha
#53909
Hello All,
I recently put together a quad band GM862 GSM+GPS module with usb interface. The problem is that I am unable to communicate with the device at all :cry:

I installed the usb driver mentioned on the website; a COM port also shows up in the device manager's hardware profile.
I reset the board and the green light blinks a couple of times before going silent.
I tried using the hyperterminal with the flow control set to Hardware and None, neither of them works.
When I type anything in the hyperterminal, nothing appears in the window i.e., neither the thing I type nor any respone from the device.
I tried looking in the forum for similar problems but I am afraid I haven't found anything that I could use.
Most people have been able to acheive basic communication atleast.
I look forward to everything that you may have to suggest and get this problem solved.
Thanks in advance,
Shashank.
By scorpion7
#59443
Im having the same problem cant get anything to display on the hyperterminal window.
By olivier_p
#59447
What baud rate are you using? I think it should be 4800. The USB RS232 is usually set between COM3 and COM8.
Hope that help you!
By shashankmutha
#59452
Your USB may not be supplying the required power, mine wasn't.
Connect an external power supply (I do not remember exactly but I used 9V) to the dc barrel jack connector on the board and you should be on.