Display Block

 

Use this block to display an image, write some text, or draw a shape on the NXTs display screen.

By positioning several Display blocks in a row you can create more complex drawings by adding additional images, text and shapes with each new Display block.

If you want to erase the contents of the screen before beginning, check the "Clear" checkbox.

If you would like to return to the default LEGO MINDSTORMS icon, select Reset in the pull-down menu.

The screen measures 100 pixels wide by 64 pixels high.

 

 

1.   This icon shows whether the block is set to display an image, some text, or a drawing; or whether it will just reset the display to the default icon.

2.   You can change values dynamically by connecting data wires to this block’s data hub. (See the Data Hub section below for more information.)

 

Configuring the Display Block:

 

1.   Use the pull-down menu to choose whether you want to display an image, some text, or your own drawing; or whether you just want to reset the display.

2.   To erase the contents of the NXTs screen, check the "Clear" checkbox.

If you choose to display an image (as in the configuration panel above), you’ll be able to set the following additional properties:

3.   The File property will let you select the image to display. Click on each name to see a preview. Images are stored in the Image Files folder of the LEGO MINDSTORMS software on your hard drive.

4.   Use your mouse to move an image, some text, or a drawing around the preview screen to position it. The X and Y input boxes let you precisely position the image. Typing zeros into both boxes will set the image against the left and bottom edges of the screen.

 

 

If you choose to display some text (as in the configuration panel above), you’ll be able to set the following additional properties:

5.   The Text property will allow you to enter the text to be displayed on screen.

6.   Use the pull-down menu to choose the line number that you would like your text displayed on or use the X and Y input boxes to set a precise starting location for the text. Typing zeros into both boxes will start the text at the bottom edge of the screen against the left edge.

 

 

If you choose to draw a shape (as in the configuration panel above), you’ll be able to set the following additional properties:

 

7.   The Type property will allow you to set the shape that you will draw. The choices include drawing a dot, a line and a circle.

 

8.   If you choose to draw a dot, the X and Y input boxes determine the location of the dot on the screen. Typing zeros into both boxes would position the dot at the bottom edge of the screen against the left edge.

 

If you choose to draw a line, a second set of input boxes will appear so that you can set the end points of the line. The starting point of the line should be defined in the upper x and y coordinate boxes and the end point in the lower x and y coordinate boxes.

If you choose to draw a circle, an additional box will appear identified as the radius of the circle. Type the coordinates that define the center location of the circle into the first two coordinate boxes and the radius of the circle into the radius box.