https://devzone.nordicsemi.com/f/nordic-q-a/4226/high-ma-device-on-gpioI&#39;m trying to connect a camera module ( OV7670 ) to my nRF51822 EK. The camera requires an operating current of 18mA. If i were to connect the 3.3V rail input for the camera to the VCC of the nRF51822 EK, would i be able to provide this much current?en-USTelligent Community 13Wed, 29 Oct 2014 23:35:13 GMThttps://devzone.nordicsemi.com/thread/15092?ContentTypeID=1Wed, 29 Oct 2014 23:35:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a28b037d-198e-4156-9fd5-6f0d43b30675karthik.ganesan<p>Hi Vebjørn, you are right. I was able to source the necessary power. it turned out to be a problem with the reset and power down lines for my camera. i had to de-assert reset first, followed by power down and then provide a clock. it works now.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/15091?ContentTypeID=1Wed, 29 Oct 2014 08:41:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:95d9427a-6ad7-4c62-a8a9-3c26727136eeVebj&#248;rn<p>If you look at the schematic of the Evaluation Kit you will see that the VCC pins on the headers come directly from the battery/voltage regulator. (through some diodes, but you can neglect those) <img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/vcc_5F00_io.png" alt="image description" /></p> <p>This means that the current available there is only limited by the battery if you&#39;re using that, or the voltage regulator, which can supply 300mA. 18 mA will in other words not be a problem :)</p><div style="clear:both;"></div>