QRDude User Guide: 2D Panels

Location of controls...

2D screen - default settings
2D screen - default settings


2D mode uses the following settings from the main screen:


N7 inverse qrd diffusers
Lego comparison of depth-optimised vs legacy panels


Depth-optimise menu
2D inverse options selected from main screen


The shift controls

The shift controls allow the panel build to be started at any position in the number sequence. QRDude automatically clicks the Centre button when you access the 2D screen, giving a symmetrical panel. Assymetrical panels, such as those commercially available, can be modelled by pressing the No shift button

Shift controls
Shift controls



The "Export / Generate 2D report" menu option will create the text file qrdude_2d.txt containing the build information and weight estimate. QRDude will then attempt to open this file in your default text editor (normally notepad)
If the fin width is zero, the weight estimate is based on using solid blocks.
For non-zero fin widths, it is assumed that floor plates are used at the bottom of each well, and that these are made of the same material as the fins.

Note that the reported dimensions and weights do not include any backboard.
When building with fins, a backboard can be used, but a more common option is to use a slightly larger floor plate to sit across the bottom of the fins for the maximum depth wells. This results in a panel that sits off the wall by the thickness of these plates.
Another option would be to make the fins deeper by the thickness of the plate, and fit a standard sized plate between the fins as is done for all the other wells - a neater finish, but a little heavier.
Some future version might offer a choice of build style, but for the moment, you'll have to do this bit manually


Maxpic screen

For those keen on eye candy, the maxpic screen shows the 3d panel fullscreen. Click any mouse button or press any key to exit.


Maxdata screen

The maxdata screen is intended as a construction aid, and is particularly useful for building panels when there is a computer available next to the build area.


Maxdata screen
Partial maxdata screen for an N29 diffuser

The maxdata screen shows the crossword style data panel fullscreen. The colors used are the same as used for the crossword area on the 2d screen, ie blues for block heights, reds for well depths. If the dimensions checkbox is ticked, the actual sizes will be shown rather than depth units.

Since the detail on higher order panels can be hard to read, particularly when working in inches, a floating panel has been added. This shows the following information for the well under the cursor:


When building the panel, it is handy to make an adjustable jig to set the position of the floor plates for each well. This leads to all the wells of the same depth being done before moving on to the next depth. Double-clicking the left mouse button on any well highlights all wells of that depth in yellow, making it easy to find 'em all...


Maxdata screen with cells highlighted
Maxdata screen with cells highlighted (after left double-click)


Double-clicking the right mouse button on any well will highlight all those wells as before, but it will also replace the colors of the other wells. Wells that are deeper than the current well will be shown in a light shade of color (blue or red depending apon whether you are working with block heights or well depths). Wells that are shallower than the current one will be shown in white.

Maxdata screen with layers highlighted
Maxdata screen with cells and layers highlighted (after right double-click)


As you are gluing in the floor plates for the current depth, the wells shown in the light color should already have been completed (assuming you build the deepest wells first). This provides a quick check that you haven't missed any.
If you build the shallowest wells first, you can swap the layer colors by ticking the inverse-colors checkbox on the 2d screen.

Regardless of which scheme you use, the highlighting can be cancelled by double-clicking the wheel on your mouse. If you don't have a wheel mouse, you will need to exit the maxdata screen and come back in. Since the mouse buttons are reserved for highlighting, you need to press a key to exit the maxdata screen. Any key will do.


A few photos
2D-N29 QRD diffuser
Finless N29 by Swedish builder Petter Persson


2D-N29 QRD diffuser with fins
Work in progress: Finned N29 by US builder Lonely Raven using plates for the well bottoms rather than blocks


2D-N13 test build
Lonely Raven's partial build of an N13 as a proof of concept prior to embarking on the N29


A small treat to finish with...
N11 inverse qrd diffuser
Animation of building a 2D depth-optimised inverse N11 using Lego


Additional QRDude pages:


/qrdude-user-guide-page2.htm last modified: 27 July 2019
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