Untitled

/* 10Hz Sine wave generator*/

float time;
int value;

void setup() {                
DDRK = 0xFF;
}

void loop(){  
   time = millis()/50.0;  //millis is amnt of time passed since beginning program
   value = 128.0 + 128.0*sin(time*PI); 
   PORTK = value;
}