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Provides an interface to send and receive character on the UART over USB line of the MicroBit.
Line Follower Example
This example builds upon the "servos" and "neopixel" examples to implement a buggy with line following ability, based on the Kitronik :MOVE line follower add-on (which provides two optical sensors on the underside of the buggy).
The control loop is designed to follow a black strip (e.g. 20 mm black tape) on a light background. If both sensors get dark (e.g. due to a strip of tape across the main line), the buggy stops.
The motors are initially stopped. Press button A to start/stop running along the strip.