Beam Brush is a new element of your laser projector which like the scanners and colors
in your laser has its own control parameters. To change those parameters, we have added
a tab in our projector settings window. To get to the projector settings window we go
to settings> Projector settings. Select the FB4 controller that you would like to configure
and go to the Beam Brush tab. Note, the beam brush tab will only appear
when your projector has beam brush in it. The first thing we want to do is enable beam
brush. This will reveal all the settings available
to us. There are 3 main adjustments we will make
to our beam brush act exactly as we would want.
First is scaling, minimum and maximum brushing. Second is a x,y offset.
And finally shift and slew rate. In output scaling and linearity correction
we can set our minimum, and maximum brush, and if needed a curve. It is unlikely this
will be anything but linear due to how the beam brush device works, but we have added
it just in case. This works just like in the advanced color correction settings and you
can use arrow keys to shift up and down selected points.
Use this to determine your maximum brush (or possibly minimum) that you will want to use
on this projector. Next let us look at the x, y shift compensation.
Beam brush systems as they move through brush values will create a slight x,y shift in output.
This can be minimized with perfect alignment, but in the reality of the touring world, this
is unachievable, so we have added a x,y compensation to tune this shift. The 0% and 100% are calculated
before output scaling and linearity, this means that tuning this option will always
be for 100% possible brush, and wont change if you change your minimum and maximum brush
values in the output scaling section. For the XY offset, you can select each tuning
point and use the grid here to move them into place. The test pattern will display a 0%
brushed square and the tuning point brushed square on top, the goal is to center the brushed
square on the 0% brushed square. You will do this for each percentage to correct for
the x/y offset. Beyond will smoothly go between each tuning
point when you select them so you could see if your adjustments worked. You can also change
the patterns colors here, first square is the 0% brush, and the second is the brushed
color. New beam brush projectors from Kvant will
have the x/y shift already completed from shipment and stored on the FB4 itself, changes
here will be on top of the settings originally created by the manufacturer.
And as one more note, if you need to go beyond the visual graph, you can go further by entering
a value here, or clicking on the arrows and dragging with your mouse.
For timing and shift compensation, we have first beam brush timing shift, this is like
color shift and changes how early the instructions sent to the beam brush mechanism compared
to x,y scanner position and color timing, as they all react at different rates. 4 is
a good default shift for 3mm systems, up to 10 watts, and 6 is a good default shift for
5mm systems, from 10w to 40w. The slew rate limiter is a calculation that
Beyond makes to make sudden transitions between brush sizes correctly time themselves out.
So, a sudden change in an effect, looks like a sudden change in real life. A slew rate
of 1.0 should work for the default maximum brushed size that came shipped with your projector,
however if you have changed the minimum and maximum size of the brush from a hardware
standpoint with tuning, you may need to adjust this, lower number for less overall brush,
and higher for higher overall brush. We use this test pattern to set these two
vales, you can see how these two values affect the pattern, we want the white bars to be
perfectly full sized, and the red lines be perfectly zero brush. Without any overleap between them.
Just pressing okay will save these settings to the temp file on your pc, but you can also
save this projector’s settings to a file using this tool, and beam brush settings will
be saved along with all the other settings tabs in this window.
In the end your test patterns should look like this
The circle test pattern will look like the progressively wider circle will smoothly increase
on all sides of the inner circle. And the line test pattern will have the whites
brushed correctly, and the reds at zero brush without any colors being shown to have brush
sizes they should not have. Thanks for watching our quick hints video
on using beam brush setting in Beyond and setting up your beam brush projector properly.
If you still have questions or need help, email support@pangolin.com and we can assist
as soon as possible and be sure to watch our other quick hints videos on the beam brush
additions to beyond to get the full picture!