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    Old habits from plain C? Commented Aug 27, 2019 at 15:23
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    @EdgarBonet I was already a bit 'afraid' of such remark. Commented Aug 27, 2019 at 15:26
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    People copying examples from people that have bad habits, or learned from people with bad habits. Commented Aug 27, 2019 at 15:53
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    I would use a byte for values that are <=255, save on memory. Commented Aug 27, 2019 at 16:06
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    @CrossRoads You are right ... although I use mostly int's when I just want to test something, for a program where I expect (even in future) that memory is an issue (which is very fast for an Arduino) I use smaller types. In this case it doesn't matter, it doesn't use any SRAM memory. Commented Aug 27, 2019 at 16:18