https://devzone.nordicsemi.com/f/nordic-q-a/50302/lights-not-blinking-with-nrf-blinky-exampleI&#39;m very new and trying to get the nRF Blinky example to work with an iPhone with an nRF52840. I&#39;m able to connect to the device and it seems to be reading and writing correctly to the LED but the light won&#39;t blink on the board. It&#39;s not reading theen-USTelligent Community 13Mon, 29 Jul 2019 15:10:41 GMThttps://devzone.nordicsemi.com/thread/201035?ContentTypeID=1Mon, 29 Jul 2019 15:10:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4106cbe3-e08c-45e4-a083-c2a6701907a4Marjeris Romero<p>Hi Berry,</p> <p>Have you programmed your nRF52840 DK with the right ble_app_blinky example for your board? For the nRF52840 DK you should use the project for PCA10056 which can be found under <code>/examples/ble_peripheral/ble_app_blinky/pca10056/</code> in our SDK (latest version is v15.3). Remember to program Softdevice s140 as well.</p> <p>Best regards,</p> <p>Marjeris</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/200823?ContentTypeID=1Fri, 26 Jul 2019 19:49:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:44a082a6-58e5-48b1-bcc4-e88ff666cc55Berry Blue<p>Here is the output from the console on Xcode too. It looks like the board is getting read/written to but I&#39;m not seeing the LED turn on</p> <p></p> <p><b>Connecting to Blinky device...</b></p> <p><b>Connected to Blinky</b></p> <p><b>Discovering LED Button service...</b></p> <p><b>LED Button service found</b></p> <p><b>Discovering LED and Button characteristrics...</b></p> <p><b>Button characteristic found</b></p> <p><b>LED characteristic found</b></p> <p><b>Enabling notifications for characteristic...</b></p> <p><b>Button notifications enabled</b></p> <p><b>Reading Button characteristic...</b></p> <p><b>Reading LED characteristic...</b></p> <p><b>Button value changed to: 153</b></p> <p><b>LED value written 135</b></p> <p><b>Writing LED value (with response)...</b></p> <p><b>Reading LED characteristic...</b></p> <p><b>LED value written 1</b></p> <p><b>Writing LED value (with response)...</b></p> <p><b>Reading LED characteristic...</b></p> <p><b>LED value written 0</b></p> <p><b>Writing LED value (with response)...</b></p> <p><b>Reading LED characteristic...</b></p> <p><b>LED value written 1</b></p><div style="clear:both;"></div>