Softwareserial H _hot_ May 2026

void setup() // Hardware serial for debugging Serial.begin(9600);

// Send data via software serial (non-blocking friendly) if (Serial.available()) char out = Serial.read(); mySerial.write(out); // blocking but short softwareserial h

// Optional: increase receive buffer size (edit library file) void setup() // Hardware serial for debugging Serial

void loop() // Continuously read from software serial while (mySerial.available()) char c = mySerial.read(); Serial.print(c); // echo to hardware serial // echo to hardware serial