https://devzone.nordicsemi.com/f/nordic-q-a/90938/how-do-i-wake-up-to-nrf52840-with-timerMy device get deep sleep mode. It wakes up from reset button trigger. Because I couldn&#39;t gpio pin trigger for wakes up. So I put vibration sensor to reset pin. It wakes up trigger with vibration sensor. I have an idea but ı dont know how to do. Wake upen-USTelligent Community 13Mon, 15 Aug 2022 08:54:34 GMThttps://devzone.nordicsemi.com/thread/381496?ContentTypeID=1Mon, 15 Aug 2022 08:54:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:af0abca8-e04f-4e0b-9ab5-8d9fa6a3dd63sasci<p>Thank you Jared <span class="emoticon" data-url="https://devzone.nordicsemi.com/cfs-file/__key/system/emoji/1f642.svg" title="Slight smile">&#x1f642;</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/381478?ContentTypeID=1Mon, 15 Aug 2022 07:54:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:47faf25e-19b6-48bb-8b35-3662c14972d8Jared<p>Hi,</p> <p>Correct, all clocks are disabled in System Off sleep.</p> <p>regards</p> <p>Jared&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/381375?ContentTypeID=1Fri, 12 Aug 2022 13:22:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:060db7ac-888b-4788-851f-64d14ef820cdsasci<p>As far as I understand there is no wake-up with the timer trigger. Is it true?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/381304?ContentTypeID=1Fri, 12 Aug 2022 08:53:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:05e7fc61-9318-4060-943b-d4edce11a6b0Jared<p>Hi.</p> <p><a href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/power.html?cp=4_0_0_4_2_2#unique_220399309">From System OFF sleep, the nRF52840 can be woken up by the following sources:</a></p> <ul> <li>The DETECT signal, optionally generated by the GPIO peripheral.</li> <li>The ANADETECT signal, optionally generated by the LPCOMP module.</li> <li>The SENSE signal, optionally generated by the NFC module to wake-on-field.</li> <li>Detecting a<span>&nbsp;</span><a href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/power.html?cp=4_0_0_4_2_2#unique_506524919">valid USB voltage</a><span>&nbsp;</span>on the VBUS pin (V_BUS,DETECT).</li> <li>A reset.</li> </ul> <p>If you want the device to wakeup from GPIO peripheral then you can follow the method described in <a href="https://devzone.nordicsemi.com/f/nordic-q-a/78902/gpio-wakeup-from-systemoff">this </a>thread.</p> <p>regards</p> <p>Jared</p><div style="clear:both;"></div>