Super Feeder lets you adjust the duration of the feedings, which I think is pretty accurate, but you'll have to calibrate it for the desired weight, food size,

Super Feeder lets you adjust the duration of the feedings, which I think is pretty accurate, but you'll have to calibrate it for the desired weight, food size, etc. I added the relay because I wanted more control. Normally you use a wall outlet relay or timer but then you only have one preset duration, and there's a 10 minute reset interval between feedings.