Micro Bit example

microbit/micropython/uart.py: the Micro BIt comes with a UART simulator via the USB connection, it is very convenient: support.microbit.org/support/solutions/articles/19000022103-outputing-serial-data-from-the-micro-bit-to-a-computer To output data to the computer simply use Python print. To receive you can e.g. use GNU screen:
```
screen /dev/ttyACM0 115200
```
It appears to be very unreliable however, some times it shows up, sometimes it doesn't.

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