https://devzone.nordicsemi.com/f/nordic-q-a/32041/communication-between-sdk-8-0-based-nrf51822-and-sdk-14-based-nrf52832HI, I am unable to communicate between a SDK 8.0 based nRF51822 sender and SDK 14 based NRF52832 receiver. The data rate of the SDK 8.0 sender is 250 KBits/sec, whereas the data rate of the SDK 14.2 based receiver is 1Mbit per second. We are unableen-USTelligent Community 13Tue, 13 Mar 2018 14:10:35 GMThttps://devzone.nordicsemi.com/thread/124188?ContentTypeID=1Tue, 13 Mar 2018 14:10:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dce37e38-6ae4-4d38-b3ea-fe7244fcfc8aketiljo<p>The datarate must be equal on both ends of the link. 250 kbps is depreciated on the nRF52 so if you need to communicate with your excising device at 250 kbps, you must use the nRF51 as a receiver as well.</p><div style="clear:both;"></div>