Hi,
I recently soldered some header pins to my GY-NEO6MV2 GPS Module. With a regular volt meter I measured that all pins were not connected and after connecting the 5V and GND a led starts blinking on the LED.
However, when I tried uploading the testing code provided with the TinyGPS library(https://github.com/mikalhart/TinyGPS) the GPS module does not seem to respond to any of serial communication.
Did I fry my GPS by soldering? Is there a way I can diagnose this?

Any general tips for a starting Arduino enthusiast are always welcome!

 

... have to ask ...Is th GPS module ground connected to the Arduino ground?

 

I'm assuming you have FTDI cable...

You could try to connect computer to GPS and see if that is working correctly at least https://www.terraelectronica.ru/pdf/show?pdf_file=/z/Datasheet/U/UART+GPS+NEO-6M+User+Manual.pdf