https://devzone.nordicsemi.com/f/nordic-q-a/119262/testing-ledsHello, I&#39;ve got the nrf9160dk board, but the nrf91 isn&#39;t visible. I was told that it&#39;s dead, and I should try to play around, at least with the 52840. I&#39;ve tried to make an easy blinking program, but that&#39;s where I got stuck. This code does nothingen-USTelligent Community 13Mon, 24 Feb 2025 12:21:43 GMThttps://devzone.nordicsemi.com/thread/524331?ContentTypeID=1Mon, 24 Feb 2025 12:21:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e16358ff-8b50-4944-a3c7-5dc8e39e8147Vidar Berg<p>Hello,</p> <p>The nRF52840 functions as a <a href="https://docs.nordicsemi.com/bundle/ug_nrf9160_dk/page/UG/nrf91_DK/hw_description/nrf9160_board_controller.html">board controller</a>&nbsp;on the nRF9160 DK and P1.03 is used as a control signal.</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1740399640081v1.png" alt=" " /></p> <p>Switch position to program the nRF9160</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1740399685267v2.png" alt=" " /></p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>