https://devzone.nordicsemi.com/f/nordic-q-a/8885/redbearlab-nrf51822-led-controlGood work, I am trying to control with android i nrf51822 But I have a problem. Ten LEDs After connecting the device with Android when I press the off button or &quot;device does not support UART .disconnecting &quot; I get this error . I got here developer.mbeden-USTelligent Community 13Mon, 31 Aug 2015 07:31:55 GMThttps://devzone.nordicsemi.com/thread/32680?ContentTypeID=1Mon, 31 Aug 2015 07:31:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b05a5584-7b97-496c-8908-28ba72766298Stian R&#248;ed Hafskjold<p>Duplicate question: <a href="https://devzone.nordicsemi.com/question/49147/device-does-not-support-uart/">devzone.nordicsemi.com/.../</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/32679?ContentTypeID=1Tue, 25 Aug 2015 14:33:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3a6c9432-8985-47ad-9001-76bee331bd2eahmet<p>Yes,I am using mbed with RedBearlab nrf51822.I wanted to do , but I&#39;m compiling LED control program and loading in redbearlab nrf51822 after I download ble_test connection.After I connected the Android with nrf51822 but Disconnecting</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/32678?ContentTypeID=1Tue, 25 Aug 2015 13:50:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:069d9f24-f791-4f94-b1f5-139dbb79f2daStian R&#248;ed Hafskjold<p>Sorry, I&#39;m not sure if I understand you completely. The example works, but when you turn of the device you get an error on your Android phone? And you are using mbed with the RedBearLab RF51822 module?</p><div style="clear:both;"></div>