I am trying to write a float value to a file on a SD card. I don't understand why serial.println(float) on works, but file.println(float) does not. If someone can explain this I'd be most grateful. I've tried looking at dtostrf, but honestly I cannot find it in the reference. Thanks.

Writing a float value to a file

system April 15, 2012, 7:22pm 2

I don't have an SD shield. Can you define "doesn't work"? Do you mean "doesn't compile", or "compiles, but doesn't write to the file"?

Topic		Replies	Views
Converting a float to a char* for writing to SD card Storage	5	6491	May 6, 2021
Convert float to strint to use "WriteToFile(var)" Storage	4	700	May 6, 2021
String to Float conversion issue Programming	3	1961	May 5, 2021
problem float to string Programming	12	3047	May 5, 2021
How to sprintf a float? Syntax & Programs	11	121598	May 6, 2021