Avoid obstacles and measure distances with the ultrasonic range finder. Device emits a high-frequency sound wave that alerts the robot to things in its path. A Programming Kit is needed to change the program in the VEX Controller. Measure distances from 1.5in to 115in. Detect obstacles using high frequency sound waves.
If it's a gallery, they will usually expect to be paid 50% - 60% of the selling price. If you need to be paid $499.80 for the quilt, that means the person the gallery is selling it to will need to pay at least $999.60 for the quilt.
I have made a lot of baby quilts for the ABC Quilt project. They range in size from 3X3 to 4X4 feet. If you want to make a quilt for the baby to drag around, this is a good size. If you want to make a quilt for the crib you might want to make it a little longer and narrower - say 3X5. I hope this helps. By the way, be sure to overstitch or quilt about 1 inch in from the edge, and quilt or tie closely.