Super Mario on floppy-drive

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Interfacing the Floppy Drive with Arduino

Connect the 2nd header of the floppy drive cable to connect to the floppy drive itself.
Then, on the end that you normaly connect to your motherboard, find pin 1 (see the red wire)

Connect pin 13 & 14 together.
Connect pins 17 & 19 to ground.
Connect pin 18 to digital 3 on the arduino
Connect pin 20 to digital 2 on the arduino

Basic Code

NO MARIO TUNE YET

 const byte FIRST_PIN = 2;
 const byte PIN_MAX = 3;
 
 void setup()
 {
   pinMode(13, OUTPUT);
   pinMode(2, OUTPUT);
   pinMode(3, OUTPUT);
   pinMode(13, HIGH);
 }
 
 void loop()
 {
   reset();
   for (byte s=0;s<180;s++){ // For max drive's position
     for (byte p=FIRST_PIN;p<=PIN_MAX;p+=2){
       digitalWrite(p,HIGH);
       digitalWrite(p,LOW);
     }
     delay(2);
   }
 }
 
 void reset()
 {
   for (byte s=0;s<80;s++){ // For max drive's position
     for (byte p=FIRST_PIN;p<=PIN_MAX;p+=2){
       digitalWrite(p+1,HIGH); // Go in reverse
       digitalWrite(p,HIGH);
       digitalWrite(p,LOW);
       digitalWrite(p+1,LOW);
     }
     delay(5);
   }
 }