Sitting on a sunny patio with a hot cup of coffee in hand, watching birds fly around the garden from the feeder to the birdbath, and to the treetops is one of life's greatest pleasures. According ...

Still, Arduinos are cheap (we just picked up some tiny Pro’s for about $3) and it is a more flexible arrangement than, say, a 555 driving the servo. We have seen many cat feeders over the years.