https://devzone.nordicsemi.com/f/nordic-q-a/14945/soft-power-and-nrf52As an experiment, we want to implement soft power off for nRF52 with external components. We want to keep the entire circuitry entirely switched off, and after a press of a pushbutton, we want to turn on an nRF52 and do a short transmission. This caseen-USTelligent Community 13Tue, 05 Jul 2016 15:59:22 GMThttps://devzone.nordicsemi.com/thread/57005?ContentTypeID=1Tue, 05 Jul 2016 15:59:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:31b0a578-ca07-4bc8-9784-e8be70dcfc3eAdam Sillye<p>Thanks. Will check out the sensor beacon. Also, we will check the leak on the other components. If any leak is there, it&#39;s easier to forget the whole thing and just put nRF to sleep mode, with GPIO wakeup. We&#39;ll check...</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/57004?ContentTypeID=1Tue, 05 Jul 2016 09:00:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cac70f5d-0248-4a46-8dfd-0c7aec73b28f&#216;yvind Karlsen<p>Hi,</p> <p>We have an example implementation on this in the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52/dita/nrf52/app_example/solar_beacon/introduction.html?cp=2_6_0">solar powered sensor beacon</a>.</p> <p>Make sure that you are using a battery that supports the instantaneous current draw that you may get, alternately use a large enough capacitor bank. If you drain too much current from the battery the voltage may drop rapidly and cause power on reset.</p> <p>What current levels are you seeing through the GPIO, and total current in your off mode? I expect that there is some small leakage current in all devices, FETS, nRF, diodes, etc.</p> <p>Best regards,</p> <p>Øyvind</p><div style="clear:both;"></div>