void translateCircle(float speed){
  
  if ((screenWidth - menu.width)/calibrator.magx - t > 60){
    clearDisplay();
    fill(0,0,0);
    strokeWeight(10);                              // Controls thickness of line
    stroke(color(0, 0, 255));
    ellipseMode(CENTER);
    
    ellipse(convertXCoord(centerX), convertYCoord(centerY), 
            (screenWidth - menu.width)/calibrator.magx - t, (screenWidth - menu.width)/calibrator.magx - t);
            
    t = t + speed*1;
    
  } else {
    
    if (convertXCoord(centerX) - t2 > convertXCoord(250)){
      clearDisplay();
      fill(0,0,0);
      strokeWeight(10);                              // Controls thickness of line
      stroke(color(0, 0, 255));
      ellipseMode(CENTER);
      ellipse(convertXCoord(centerX) - t2, convertYCoord(centerY), 
              (screenWidth - menu.width)/calibrator.magx - t, (screenWidth - menu.width)/calibrator.magx - t);
              
      t2 = t2 + speed*0.1;
    }
  }
}