How can I print to the serial monitor a string or just single character followed by a variable like "L 55"
Serial.print
int Var = 55; //Do it in 2 lines e.g. Serial.print("L "); // String Serial.println(Var); // Print Variable on same line then send a line feed
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Serial.print
. – jfpoilpret Mar 10 '15 at 19:52