I've been using it for a week and I'm delighted. Programming the food is simple; you have to set how many portions of food you want to come out in the hours you program (each portion is approximately 5g). Also, you need to remember not to fill the tank to the top because otherwise the food doesn't come out well, and that there is a feeder that comes out more than another (but it's difficult to make each cat eat in one and not in the other, so that's why it doesn't pose much of a problem for me).
It works great and I can see which of my three cats is eating, so I can monitor their food. The camera is not of great quality, but sufficient to see them.
Really awesome, took for my diabetic cat that is always hungry, it's a lot easier to monitor food / feed in exact times, or if i'm not home, the camera is a nice