This is a design for tilable solar, based around a roboport checkered grid. It is as close to perfect ratio as I could get it (0.8406), and is designed for people like me who are dyslexic to be able to stamp down easily. Just line up the roboports on the edges.
There are two individual diamond designs. One with and one without a central block of accumulators. The one with accumulators ratios at at 0.82, and the one without at 0.851. Two with accumulators and one without gives you the magic number. 2:1, or 4:2, which lets us build the first blueprint in the book, a rectangle that is perfectly ratioed, fits on one screen, and which tiles with a 180 rotation per stamp down. Quick and easy to place.
Have fun tiling the world!