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Cat feeder uses Archimedes screw

Normally DIY cat feeders uses simple dispenser. This works great, but it is hard to predict the amount of food that drops in to dish. Mgrenonville started with dispenser based feeder and now introduces second version which is more controllable and predictable. The feeder is controlled by Arduino with proto-shield attached. Time is kept using DS1307 RTC board. And feeder is run with screwdriver motor.

There is also an LCD screen where status can be seen. A serial interface is used to modify settings like time, number of feeds and other. Most fun part in this is screw feeder. It is made of Poly-morph which has low melting temperature and is fairly easy to work with. Feeder seems to work pretty smooth and is well blended above cat dish.

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