Convert serial.read() to usable int

Projects Programming
6

I suggest you try this on the receiving end:

void loop() {
    if (Serial1.available() > 0) {
        char ch = Serial1.read();
        // show the byte on serial monitor
        Serial.print(ch, HEX);
    }
}

Match what you see on the receiving arduino serial monitor with the int value you're sending from the other one...