Meet BallReady: an automatic pet feeder and ball launcher that keeps your dog active and fed. It lets you control the amount of food that is released. BallReady can set food for every 1 or 5 balls returned. You can also schedule feeding sessions ever 12 or 24 hours.
BallReady lets you play fetch with your dog and promotes activity when your are away. It has buttons to control food amount and other settings. More information is available here.