https://devzone.nordicsemi.com/f/nordic-q-a/11133/region-ram-overflow-with-stackHi, In my project I am using rev3 nrf51822-QFAA chip set with s130 soft device.while I compiling getting the error &quot;region RAM overflowed with stack&quot;. Then I followed some question in Nordic site related to these error and changed the heap size fromen-USTelligent Community 13Tue, 05 Jan 2016 11:59:17 GMThttps://devzone.nordicsemi.com/thread/41719?ContentTypeID=1Tue, 05 Jan 2016 11:59:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:da101b50-87c2-409f-aeff-81319253ef1eOle Bauck<p>Some additional info: The SoftDevice and SDK do not use any heap.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/41718?ContentTypeID=1Mon, 04 Jan 2016 15:57:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:041124c2-667c-4861-91ef-9f682fe416fdWojtek<p>If you are not using dynamic memory allocation (malloc), it is 100% safe. you can set it to 0.</p><div style="clear:both;"></div>