Softwareserial.h Library File

1. Introduction: The Hardware Limitation Every Arduino enthusiast eventually hits the wall: "I only have one hardware serial port (pins 0 and 1), but I need to connect two serial devices."

Default buffer is 64 bytes. Modify SoftwareSerial.h in your Arduino core: softwareserial.h library

void loop() // Check GPS if (gps.available()) char c = gps.read(); Serial.print(c); // Show on debug bluetooth.print(c); // Forward to Bluetooth // Show on debug bluetooth.print(c)