Maximum Amount of Data That Can Be Sent Through Extended Advertisements nRF52840https://devzone.nordicsemi.com/f/nordic-q-a/41180/maximum-amount-of-data-that-can-be-sent-through-extended-advertisements-nrf52840Through doing some implementations of extended advertisements between two nRF52840 boards, I have found the maximum amount of data that I can put into an extended advertisement payload is 238 bytes, with the amount of custom data that I can send throughen-USTelligent Community 13Tue, 04 Dec 2018 10:38:42 GMTRE: Maximum Amount of Data That Can Be Sent Through Extended Advertisements nRF52840https://devzone.nordicsemi.com/thread/160172?ContentTypeID=1Tue, 04 Dec 2018 10:38:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6f2961d2-bfe4-42ae-bfad-6d0726529c22run_ar<p>Seems about right. From the latest migration notes: The SoftDevice now supports advertising up to 255 bytes of advertising data. The macro BLE_GAP_ADV_SET_DATA_SIZE_EXTENDED_MAX_SUPPORTED is added to indicate this. For connectable extended advertising, the maximum advertising data size is 238 bytes, as indicated by BLE_GAP_ADV_SET_DATA_SIZE_EXTENDED_CONNECTABLE_MAX_SUPPORTED.</p> <p>You can find the migration note in nRF5_SDK_15.2.0_9412b96\nRF5_SDK_15.2.0_9412b96\components\softdevice\s140\doc</p><div style="clear:both;"></div>