ADC on P0.04 doesn&#39;t register 1.5vhttps://devzone.nordicsemi.com/f/nordic-q-a/123622/adc-on-p0-04-doesn-t-register-1-5vI am trying to use the ADC on an nRF52840DK. I have configured the two ADC channels in the overlay I setup the channels like this and take readings using this code I have setup a simple voltage divider. Two 10kOhm resisters between GND anden-USTelligent Community 13Tue, 12 Aug 2025 05:41:18 GMTRE: ADC on P0.04 doesn't register 1.5vhttps://devzone.nordicsemi.com/thread/545296?ContentTypeID=1Tue, 12 Aug 2025 05:41:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ae431149-116e-419f-9e58-1ffdbe38baa6Tom McGuinness<p>Not in a million years would I have found that! Channel 1 now registering 1.5v (ish) volts on P0.04.</p> <p><img style="max-height:240px;max-width:320px;" alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1754977259473v1.png" /></p> <p>Thank you&nbsp;<a href="https://devzone.nordicsemi.com/members/hmolesworth">hmolesworth</a>&nbsp;</p><div style="clear:both;"></div>RE: ADC on P0.04 doesn't register 1.5vhttps://devzone.nordicsemi.com/thread/545269?ContentTypeID=1Mon, 11 Aug 2025 19:34:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7d0aa86f-f1c7-4f35-bffd-58ce2f88a9b3hmolesworth<p>SW7 will switch P0.04 into the alternate hardware flow control (HWFC) position; this will impact the analogue voltage reading on AIN2 by reducing the impedance. Ensure SW7 is in the &quot;Def&quot; (Default) position. Also must ensure elsewhere in the code HWFC on P0.04 is not enabled.</p><div style="clear:both;"></div>