https://devzone.nordicsemi.com/f/nordic-q-a/32059/how-to-efficiently-use-the-adc-on-the-nrf51822-sdk8-1I am trying to use the ADC to take power measurements on an interval. I found an example to read the values out online: void ADC_IRQHandler() { nrf_adc_conversion_event_clean(); adc_sample = nrf_adc_result_get(); // trigger next ADC conversion nrf_adc_starten-USTelligent Community 13Wed, 14 Mar 2018 00:12:13 GMThttps://devzone.nordicsemi.com/thread/124248?ContentTypeID=1Wed, 14 Mar 2018 00:12:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cd3733c4-cf0d-461f-a703-578c5d0b3598Turbo J<p>A started ADC needs the HF clock running, which draws power. Try omitting the nrf_adc_start() at the end of your handler (and maybe trigger the ADC with a RTC based timer).</p><div style="clear:both;"></div>