Where are the hex files compiled by Arduino?

Question

Where does the Arduino IDE save the binaries on Mac OS X?

Answer 1

Arduino 1.6.5 has a new command: Under the Sketch menu, select Export compiled Binary, then Show Sketch Folder. There it is.

Answer 2

The arduino web page http://arduino.cc/en/Hacking/BuildProcess described

During a "Verify" the .hex file is written to /tmp (on Mac and Linux) or \Documents and Settings\\Local Settings\Temp (on Windows)

I am using fedora19 64bit, and when i check my /tmp the build directory created is /tmp/build8102....tmp/

Answer 3

It is very beautifully explained in the following blog Where to find Arduino Hex files or Output Binaries I hope this helps :)

Answer 4

What UDalillu said. The trick also works on Windows. On XP it ended up in C:\Documents and Settings\Your_User_Name\Local Settings\Temp\buildxxxxx\ (the xxx number changes for each build, pick the most recent).

Answer 5

In the Arduino software: go to File -> Preferences and then select Show verbose output during -> compilation.

Finally, when you are compiling, the program will show you lots of data. At the last lines, you will find the path¹ to the .hex file.

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¹Every time the path changes!

Answer 6

Arduino IDE uses the mktemp command to create the temp directory on Mac and Linux. However, on Mac the default $TMPDIR env var is not /tmp/ as it is on Linux. On Mac it's under /var/folders and it is randomly generated on boot. That complicates things a little, but here are tricks you can add to your toolkit (as aliases, functions, shell scripts, etc.) to help you find what you need.

To find the hex files

find $TMPDIR -name \*.hex -exec ls -lrt {} \; #<-- you need that backslash before and space after the semicolon

To find build directories

ls -ldrt $TMPDIR/build*

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NOTE: The ls flags of r and t cause the listing to be "reverse" sorted by "time" respectively. This means that the newest will be on the bottom.