nrf24 as TX and nrf51 as RX: ESBhttps://devzone.nordicsemi.com/f/nordic-q-a/15053/nrf24-as-tx-and-nrf51-as-rx-esbHI, I have a remote control with nRF24L01. It was talking with Gen1(uses nRF24L01) product via ESB. Now, I am developing Gen2 product*using nRF51822xxaa) and I need to support backwards compatibility with the remote control, in other words, I need toen-USTelligent Community 13Mon, 11 Jul 2016 11:08:26 GMTRE: nrf24 as TX and nrf51 as RX: ESBhttps://devzone.nordicsemi.com/thread/57452?ContentTypeID=1Mon, 11 Jul 2016 11:08:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:95ce7e96-cbca-42db-a1db-e3c24c1aaf96Hung Bui<p>@nordicdev: On the other way around can you send ack payload from the nRF24L01 to the nRF51 ? I would suggest you to test with the latest SDK v11, where we have the ESB library open source. You can actually debug inside the nRF51 when it receive a packet to see what would be wrong with the ACK TX packet. You can then compare it with the TX packet when the nRF51 acts as PTX (that works fine).</p><div style="clear:both;"></div>