https://devzone.nordicsemi.com/f/nordic-q-a/7177/nrf24l01-not-receiving-ackHi, I&#39;ve been working with a two LPC1768 boards with connections to Addicore nRF24L01+ boards. I have not been able to successfully receive an ack on the PTX board although I see data arriving on the receiver platform. I have been working with aen-USTelligent Community 13Fri, 22 May 2015 12:17:34 GMThttps://devzone.nordicsemi.com/thread/25362?ContentTypeID=1Fri, 22 May 2015 12:17:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8ea2452d-1ed2-4096-b1e4-5cb9c88ff7c4Dan Ledger<p>Hi,</p> <p>Found the problem:</p> <p>My EN_RXADDR on the transmit side was zero&#39;ed out. With EN_RXADDR = 0x01 (enable data pipe 0) on PTX, I am consistently getting ACKs.</p> <p>Dan</p><div style="clear:both;"></div>