https://devzone.nordicsemi.com/f/nordic-q-a/120923/code-doesn-t-run-nrf52820-custom-hardware-zephyrHello, I have a custom hardware around the nrf52820, and I simply can&#39;t make it to run the basic hello_world and blinky samples. I&#39;m compiling the samples using nrf52833dk_nrf52820 board, as the Zephyr documentation lists it to be possible to useen-USTelligent Community 13Wed, 23 Apr 2025 16:49:52 GMThttps://devzone.nordicsemi.com/thread/532660?ContentTypeID=1Wed, 23 Apr 2025 16:49:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3c5a86e1-10f7-4d22-85a1-d0e33a980a57areuter<p>Found the solution to my issue here: &nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/102168/failed-to-port-nrfconnect-blinky-to-52805-stuck-in-lfclk_spiwait">Failed to port nRFConnect blinky to 52805: stuck in lfclk_spiwait()</a><br />My board does not include the optional low frequency oscillator. This should be way more clearly documented.<br /><br /></p><div style="clear:both;"></div>