There are those of us who clean once a week, and there are
those of us who clean when the in-laws come to visit. The appeal of the robotic
vacuum reaches both camps: Either way, the house is a bit more spotless with
minimal human input.
Today's robotic vacuums are a far cry from the first models
that you had to track down, stranded somewhere in your house, by their
melancholy, "I'm out of power" beeping. The latest products clean
your house, remember the layout to increase efficiency, dump their own dirt in
a receptacle and find their way back to the charging station so they can
rejuice.
The Roomba Red is approximately 13 inches (33 cm) in
diameter and 3.5 inches (9 cm) tall. An external examination reveals the
following parts:
Roombas run on a rechargeable NiMH battery. The Roomba Red
battery pack is rated at 3 amp-hours and takes about seven hours to fully
charge to about 18 volts. Some of the more recent Roomba models have cut that
charge time down to about three hours. A full charge equals approximately two
hours of cleaning time, which in the Roomba world means vacuuming three
medium-size rooms before it needs to rejuice. The mobility system consists
primarily of two motor-driven, tracked wheels. Roomba steers by alternating the
power supplied to each wheel.
Roomba has a total of five motors:
- · One driving each wheel (2 total)
- · One driving the vacuum
- · One driving the spinning side brush
- One driving the agitator assembly
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