If you specify more than 7 decimal places for string constructor it doesn't convert it properly. String fltstring; float test = 0.000123456789; fltstring = String(test,7); Serial.print("Test String: "); Serial.println(fltstring) ; The code above produces expected output: Test String: 0…

String constructor doesn't convert float type correctly

liuzengqiang October 5, 2016, 1:30am 7

Like mentioned before, read the source code. My guess is the digit specified get used to generate digits after decimal.

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