https://devzone.nordicsemi.com/f/nordic-q-a/69677/the-adc-value-of-the-potentiometer-seems-to-be-strangeHello I&#39;m going to use a potentiometer to control the pwm. I am using a 10K potentiometer and have used a saadc example. I printed out the value of adc through this example, but the value seems to be printing out weirdly. This is the result ofen-USTelligent Community 13Tue, 22 Dec 2020 07:49:33 GMThttps://devzone.nordicsemi.com/thread/286224?ContentTypeID=1Tue, 22 Dec 2020 07:49:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8de1517a-7d96-4233-b9f5-5791e370d6e2ketiljo<p>The reference of the ADC is not the same as what you connect the potmeter to.The input voltage can&#39;t be higher than the reference.&nbsp;</p> <p><a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/group__nrf__saadc__hal.html#gadda2525fbe5db392d1c1980c4a1286a0">https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/group__nrf__saadc__hal.html#gadda2525fbe5db392d1c1980c4a1286a0</a></p> <p><a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/group__nrf__saadc__hal.html#gad540c22a2e06a7828a5ce6c71bc8a5d4">https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/group__nrf__saadc__hal.html#gad540c22a2e06a7828a5ce6c71bc8a5d4</a></p> <p>When you set VDD/4 as a reference and the gain to 1/4, the range is GND to VDD.</p> <p></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/286193?ContentTypeID=1Tue, 22 Dec 2020 01:55:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9b410ad0-66eb-4db1-8eef-6f2fa52b838dschosdas<p>Hello</p> <p>I connected the + of the potentiometer to the VDD.&nbsp; And where can I find and change the settings for the gain?</p> <p>Thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/285987?ContentTypeID=1Mon, 21 Dec 2020 09:09:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2a279ad8-c72d-4a7f-9805-9d844a5fad86ketiljo<p>Make sure you set VDD as a reference and the gain to 1/4 for the full GND to VDD range.&nbsp;<a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/saadc.html#concept_kxz_4pp_qr">https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/saadc.html#concept_kxz_4pp_qr</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/285941?ContentTypeID=1Sun, 20 Dec 2020 05:41:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d0efaf1f-52da-4a11-a1e3-20e363284d22schosdas<p>Hi</p> <p>I connected the left pin of this to Vcc and the right pin to Gnd. And I connected the data pin to A0 (p0.03).</p> <p>Thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/285838?ContentTypeID=1Fri, 18 Dec 2020 13:30:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6da29808-b9da-407d-b435-94c79f4e60d6ketiljo<p>How have you connected the potentiometer?</p><div style="clear:both;"></div>