https://devzone.nordicsemi.com/f/nordic-q-a/20048/convert-blinky-project-from-board-pca10040-to-my-custom-board-on-eclipseHi, I would like to convert a blinky project for the BOARD_PCA10040 to my own custom board. I can&#39;t find on eclipse where &quot;#define BOARD_PCA10040&quot; symbol is defined so I change it. can you help me please find where I can change this symbol.en-USTelligent Community 13Tue, 28 Feb 2017 12:20:05 GMThttps://devzone.nordicsemi.com/thread/78036?ContentTypeID=1Tue, 28 Feb 2017 12:20:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:99a8bc2d-794e-4f1d-b39a-fa8f94a86fffVidar Berg<p>C pre-processor symbols are defined in the Makefile, see CFLAGS variable. &quot;names&quot; with -D as prefix are preprocessor symbols. E.g.,</p> <pre><code>CFLAGS += -DBOARD_PCA10040 </code></pre><div style="clear:both;"></div>