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To calibrate the front sensors, press "f" and then [Enter]. This will display the readings from the four front
sensors. Place the robot so there is nothing within 1 meter of the sensors. All sensor readings should have
similar low values. As you move your hand in front of the sensors you should see the readings change.
The value "Object Size" is the decimal value of the sensor readings used by the sample software to
determine what action to take.
The optional sensor alignment rings may affect the sensitivity of the sensors but will help maintain their
alignment if the robot bumps into an object.
The battery voltage can be monitored by pressing "b" and then [Enter]. The reading is approximately 100x
the actual voltage so in this case the battery reading would be 7.35 Volts. This voltage can fluctuate as
motors and sensors operate so the sample software averages this over a 20 second period when
determining if the batteries are being recharged.
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