Both of the calibration images are 3"x3"x3", fitting the vats of the DropLits. The images are identical except for the black/blue colorings.
*Print out the image above. You can print it to paper or cardstock, just make sure you are printing to the accurate dimensions of the picture (3"^3).
*Save the image above to your computer
*Take the printed image and put it underneath your vat's surface. You will want to ensure the picture is square with the frame of the droplit.
*Turn on your projector and project the second image (blue) onto the 'vat'
*You will want to match the black squares/text/markings on your 'calibration card' with the blue squares/text/markings being projected. The GIF above depicts an accurate, active calibration.
Once you are matched up, you are finished calibrating.
Circle versions are below. The circle is 3" round. Same method applies as the images are identical for color-matching