         analogWrite(RED, redValue);
         analogWrite(GREEN, greenValue);
         analogWrite(BLUE, blueValue);
+        engine.setSpeed((redValue * 100) % 700);
     }
 }
 

#include <SPI.h>
#include <stdio.h>
#include <stdlib.h>

const int HASH_LEN = 20;


    digitalWrite(RED, LOW);
    digitalWrite(BLUE, LOW);
    digitalWrite(GREEN, LOW);
    engine.setSpeed(100);
}


