How to get hex file from arduino files ?

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Well, since it was bumped it's worth mentioning there is a new way to do this added in Arduino IDE 1.6.5:

  • Sketch > Export Compiled Binary
  • If you are doing this with an example then you will be prompted to save the sketch in another location.
  • Wait until the sketch has finished compiling.
  • Sketch > Show Sketch Folder
  • The .hex file will be in the sketch folder