 
 void loop ()
 {
-   // cls; // clear screen
-   // plot(x, y, color); put a certain pixel on (BLACK = OFF)
-   // plot_rect(x_left_upper, y_left_upper, x_right_down, y_right_down, color); // fill a rectangle
-   // vertical_bar(x_position, width, height); colored bard vertically (Orange - green - red)
-   // plot_char('A', x, y, color); // charachters should be uppercase! x, y = upper left corner; returns the width of the character plotted
-   // plot_int( number_to_display, x, y, number_of_chars, color); if to little space to display: drops higher numbers
-
-/*
-plot_char('8',0,0,GREEN);
-delay(2500);
-plot_char('8',0,0,BLACK);
-plot_char('6',0,0,GREEN);
-delay(2500);
-plot_char('6',0,0,BLACK);
-plot_char('9',0,0,GREEN);
-delay(2500);
-plot_char('9',0,0,BLACK);
-*/
-
-
   // read the input on analog pin 0:
   int sensorValue = analogRead(A0);
   // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):



// possible values for a pixel;
#define BLACK  0
#define GREEN  1
#define RED    2
#define ORANGE 3


#define cls          ht1632_clear


  delay(1000);
}

// Not tested yet
#define BIT_OVERRIDE(number,n,val) number & ~(1 << n) | (val << n);

/*
   plot a point on the display, with the upper left hand corner
