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Braille
Data connection via [https://www.wemos.cc/en/latest/d32/index.html ESP-32 (Wemos Lolin D32)] with Bluetooth.
== Braille ==* try it yourself [https://brailletutorial.com/tutorial/ online brailletrainer]* [https://en.wikipedia.org/wiki/Braille Wikipedia Braille]
== Science ==
