Shape Robotics Fable User Manual page 10

Proximity sensors: Three more sensors are available on the Spin, which can detect objects
in front of the module. The sensors work similar to the parking assistance system in cars,
where it can alert about obstacles in the way. The proximity of a foreign object can range from
0 (no obstacles detected) to 100 (obstacle detected very close to the module). The proximity
sensors can be measured at any time.
IR sensors: The two infrared sensors allow communication between multiple Spin modules.
A Spin module can be instructed to transmit a message through the IR Transmitter sensor,
while other modules can be instructed to listen for a message through the IR Receiver sensor.
If the module receives a message, an action can be triggered by the user, e.g. spin around
and go closer to the transmitting Spin module. Alternatively, another action can be triggered if
a message stops being received., e.g. goal line detection to spot a ball passing the goal line.
Figure 6 - Front side of a Spin Module.
Pairing: Spin Modules have a button which, if pressed, will change the LED color. The color
of the light indicates whether a Hub would be able to detect and pair with the module. Only
matching colored devices are able to communicate with each other, e.g. red Spin modules
with red Hubs.
Self-protection: Spin Modules continuously monitor the load and temperature on the motors
and the battery level. As a self-protection mechanism, modules will automatically turn off if an
overload or low battery level event is detected. You should avoid overloading, blocking or
pulling locked motors as they can be damaged.
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