Softwareserial.h Library May 2026

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."

void loop() if (gps.available()) char c = gps.read(); Serial.print(c); // Echo GPS data to Serial Monitor softwareserial.h library

void setup() Serial.begin(9600); // Debug console gps.begin(9600); bluetooth.begin(38400); // Common HC-05 default gps.listen(); // Listen to GPS first // Debug console gps.begin(9600)

Default buffer is 64 bytes. Modify SoftwareSerial.h in your Arduino core: // Common HC-05 default gps.listen()