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arduino - I can't find out variable type

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arduino - I can't find out variable type


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152 % 10 is 2. 2 is STX (start of text). That's a control character which is non-printing.

https://en.wikipedia.org/wiki/Control_character

The start of text character (STX) marked the end of the header, and the start of the textual part of a stream.


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