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Another update:
I have done continuity test for all pins and components, i have found a problem don't know if it is relevant or not, but the GPS_VCC_RF (output 2.8v) pin seems to be unusually connected to the NC pins. I have isolated the traces on the PCB, even let the pin float but still seems...
Hello everyone,
I am trying to use SIM908 with Arduino, but having problems with it. I used the reference design to create my own, below you will find the schematic. I have a stable 3.6~volt VBAT.
The problem is : the netlight pin is always high, therefore the net status LED is always...
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