2. DESIGN THE PROJECTOR LAYOUT
Projector dimensions vary depending on the size of components selected, desired size of the projected
image, and the method of box construction. A good design will allow for adjustment of internal components, as millimeters make a big difference in precision optics.
2a. Calculate the dimensions. DAZZZLA, a
moderator on the Lumenlab forums, wrote a superb
focal calculator application ( makezine.com/go/
lumenlab) to determine the dimensions of your
projector based on known component values and
desired projection performance.
2b. Design the layout. Based on the calculator
and the width of my monitor, I had a pretty clear
idea of dimensions. I cut out what would become
the bottom of the box and started laying out the
components. Note the placement of the LCD
monitor control board (aka “The Brains,” as
shown in bottom left illustration on page 50).
2c. Place the components. Using the calculated
figures as gospel, my masking tape legend of key
measurements proved invaluable for component
placement.
Which
Fresnel is
which?
Object is bigger, more
distorted — 220mm
As opposed to smaller,
crisper — 317mm
Make: 55
