So I'm having a little bit of difficulty here in my NEO-6M. The problem is it doesn't show any data in my serial monitor.
My NEO-6M Led is already blinking so its already ok.
RX -> Pin3 , TX -> Pin4 , VCC -> 3.3v , GND -> GND
Code: https://github.com/mikalhart/TinyGPSPlus/blob/master/examples/FullExample/FullExample.ino