Download Microcontroller Based Fish Feeder

stationary device is electrically powered feeder. The automatic fish feeder falls
under this category.
Electrically powered feeders are of two kinds - those which operate
mechanically and those which employ compressed air. In both cases the control
devices are electrical. The time and duration (thus the amount of feed) can be
pre-set by the operator using an electrical timer. This may be mains or battery
driven and it may operate a single feeder or a whole bank of feeders.
Basically, though there are many variants and patented examples of
compressed air feeders, most are based on the same principle. A compressor
supplies air to one or a number of feeders.
The operation of these types of feeders, which are also controlled by
timers, depends on electro-magnets or electric motors.
Type C
Type B
Type A
Type E
Type F
Type D
Type G
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