Page 25 - Hacking Roomba

6 Part I — Interfacing

through its S, M, and L buttons. It shipped with at least one virtual wall (a special
battery-powered infrared emitter used to create virtual boundaries) and a plug-in battery
charger.

FIGURE 1-1: The original Roomba

Second Generation

The second Roomba generation added what many considered a necessity: a dirt sensor. This
generation also featured improvements in battery life and cleaning efficiency. As with the
first generation, this generation also did not have ROI functionality. The second generation of
Roomba cleaners included two models:

Roomba Pro: This model, shown in Figure 1-2, was released in 2003 as the base
model of the new generation. It included the new dirt sensor and could perform
spot cleaning.
Roomba Pro Elite: This model, shown in Figure 1-3, was also released in 2003 and
was the same as the Roomba Pro model, but colored red, and included both spot
cleaning and max cleaning.