8
Spin Module
The Fable Spin Module allows the system to drive around on wheels. This is accomplished
with the help of two motors: A and B. It also provides sensor monitoring by utilizing ten sensors:
three light sensors, three color sensors, three proximity sensors, and an infrared sensor.
Wireless Communication: Spin modules are controlled wirelessly using the Hub.
DC motors: The two motors are identified as A and B and their position can be set to anything
between -32,768 and +32,767 degrees, marking a complete revolution every 360 degrees in
each direction. The direction of the two motors is mirrored, which means that to move in the
same direction, one of the motors has to be set to an angle opposite of the other. The speed
of movement of each motor can be controlled, and the angle can be measured at any time.
Headlights: The module has two headlights on the front (the side with the glass protector on
it). These can be turned off or on by the user.
Figure 5 - Front side of a Spin Module.
Light sensors: The Spin module contains three light sensors, allowing users to detect light
sources in the surrounding area (e.g. time of day, room lights) or directed light (e.g. phone
camera flash). The intensity of these light sources can be measured in percentage, from 0 (no
light) to 100 (strong light). The sensors can be measured at any time.
Color sensors: The Spin module also contains three color sensors, allowing users to detect
a color that is positioned close to them (up to 3 centimeters away). The color is represented
in a red-green-blue (RGB) scale. The observed color is strongly sensitive to light. We
recommend you turn on the headlights (see above) before trying to detect a color. The sensors
can be measured at any time.
