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.
This will give you the total square inches of your quilt. Then multiple the total square inches by the type of quilting you request. Example: A quilt which measures 60 X 72 = 4320 square inches X .02 (2 cents per square inch) = $86.40. We charge by the square inch in 3 different categories.