Prints data to the serial port as human-readable ASCII text followed by a carriage return character (ASCII 13, or '\r') and a newline character (ASCII 10, or '\n'). This command takes the same forms as Serial.print().
Serial.println(val)
Serial.println(val, format)
val: the value to print - any data type
format: specifies the number base (for integral data types) or number of decimal places (for floating point types)
None
/* Analog input reads an analog input on analog in 0, prints the value out. created 24 March 2006 by Tom Igoe */ int analogValue = 0; // variable to hold the analog value void setup() { // open the serial port at 9600 bps: Serial.begin(9600); } void loop() { // read the analog input on pin 0: analogValue = analogRead(0); // print it out in many formats: Serial.println(analogValue); // print as an ASCII-encoded decimal Serial.println(analogValue, DEC); // print as an ASCII-encoded decimal Serial.println(analogValue, HEX); // print as an ASCII-encoded hexadecimal Serial.println(analogValue, OCT); // print as an ASCII-encoded octal Serial.println(analogValue, BIN); // print as an ASCII-encoded binary Serial.println(analogValue, BYTE); // print as a raw byte value // delay 10 milliseconds before the next reading: delay(10); }