https://devzone.nordicsemi.com/f/nordic-q-a/37380/ble-master-slaveHi, I am doing one more project in that project I want to do following things: 1) my one BLE giga device module(nrf51822) will act as a master(central) &amp; other AT command module will act as a slave(peripheral which connected to micro controller) oren-USTelligent Community 13Mon, 13 Aug 2018 12:13:58 GMThttps://devzone.nordicsemi.com/thread/143941?ContentTypeID=1Mon, 13 Aug 2018 12:13:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4e901b7a-c71c-455b-9607-c46e6ebbdb9aEdvin<p>Hello,</p> <p>When you say &quot;one more project&quot;, I assume that you are talking about <a href="https://devzone.nordicsemi.com/support-private/support/210173">this one</a>.</p> <p>If so, you should already be familiar with the ble_app_uart example. Have you tested the ble_app_uart_c example, found in:</p> <p>SDK10\examples\ble_central\ble_app_uart_c\...</p> <p>&nbsp;</p> <p>If you program one&nbsp;development kit with ble_app_uart, and another with ble_app_uart_c, they will connect to each other, and do pretty mutch what you are looking for.</p> <p>Note that the ble_app_uart_c device is looking for devices advertising with the NUS UUID, it will connect to the peripheral (ble_app_uart) device.&nbsp;</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>