Poors_man_osc_sketch.ino

/*
 Poor's Man Oscilloscope Arduino Skecth
 
 This is an example code for reading the 
 analog input and to display the value
 signal output on processing.
 
*/

#define ANALOG_IN 0

void setup() {
  Serial.begin(9600);
}

void loop() {
  int val = analogRead(ANALOG_IN);
  Serial.write( 0xff );
  Serial.write( (val >> 8) & 0xff );
  Serial.write( val & 0xff );

}