https://devzone.nordicsemi.com/f/nordic-q-a/8390/master-control-panel-can-t-write-data-to-51822HI: i use master control panel to write data to 51822(sdk8.0 ble_app_uart),but i can&#39;t write successfully.i do as help information.and i have selected the right UUID and the handle(click the characteristicDeclaration will generate the UUID and handleen-USTelligent Community 13Tue, 28 Jul 2015 23:29:00 GMThttps://devzone.nordicsemi.com/thread/30446?ContentTypeID=1Tue, 28 Jul 2015 23:29:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:236bdee0-ab9e-4e28-800b-c031b7e165dfjerly<p>HI Petter: which version of your master control panel is.mine is 3.9(64bit)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/30447?ContentTypeID=1Tue, 28 Jul 2015 10:50:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bb2816e8-694f-4425-83e5-fb93fa9c8a94Petter Myhre<p>Your Master Control Panel look a bit weird. The write button the left should actually be long write, and the one to the right should be write. The right write button should work. Please see this:</p> <p><img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/mastercontrolpanel.JPG" alt="image description" /></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/30445?ContentTypeID=1Tue, 28 Jul 2015 03:16:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e5d7f7fc-212d-4945-b458-4308d3738d45jerly<p><a href="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/20150728105011.jpg">20150728105011.jpg</a></p> <p>the screenshot as attachment.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/30444?ContentTypeID=1Mon, 27 Jul 2015 11:41:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:db52e35c-8769-41f8-962e-d9832a456e97Petter Myhre<p>What does the log show? Could you edit your question to include a screenshot?</p><div style="clear:both;"></div>