https://devzone.nordicsemi.com/f/nordic-q-a/82196/gpio-configuration-to-drive-ledHi Nordic, I want to control an LED with the nrf GPIO, the LED Anode is connected to VDD, through a resistor, and the cathode is connected to the GPIO. Under this configuration, the LED should be ON when the GPIO is LOW but i cannot get the signalen-USTelligent Community 13Tue, 30 Nov 2021 14:13:17 GMThttps://devzone.nordicsemi.com/thread/341335?ContentTypeID=1Tue, 30 Nov 2021 14:13:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3e1d4e45-a807-4c3a-8513-d8191be70045ketiljo<p>Then you need to use a transistor to drive the LED.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/341330?ContentTypeID=1Tue, 30 Nov 2021 14:05:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7de14f3e-3ab4-447a-b760-03788fb2d8dfUser1321<p>Yes, i require it to be a 0V. I want to connect that GPIO to another LED so i can turn on both LEDs by pulling that GPIO low.</p> <p>Also i have a TVS in the middle with the second LED.</p> <p>If the anode from the LED is connected to VDD, will the LED current consumption still be a problem for the GPIO?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/341327?ContentTypeID=1Tue, 30 Nov 2021 13:57:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e55b8002-e177-422a-bb7c-bbb5151ffe9dketiljo<p>The problem is that the LED draws too much current so that the pin can&#39;t be pulled low enough. This is not a problem for the pin, unless you&#39;re using it for something else that requires it to be at 0 V.</p><div style="clear:both;"></div>