https://devzone.nordicsemi.com/f/nordic-q-a/21473/is-a-delay-needed-between-characteristic-updatesIs a delay needed between Characteristic updates I modified the ble_sdk_app_proximity example. I added x3 services, based on the BLE Characteristics, a beginner&#39;s tutorial, and it seems to be working fine. (nrf5-ble-tutorial-characteristic-CompletedCodeen-USTelligent Community 13Thu, 20 Apr 2017 06:29:56 GMThttps://devzone.nordicsemi.com/thread/84249?ContentTypeID=1Thu, 20 Apr 2017 06:29:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e5dad26e-7409-4960-a2d1-dfe381e6682bMartinBL<p>Hi,</p> <p>I think this is related to your other question: <a href="https://devzone.nordicsemi.com/question/130059/how-is-ble_conn_handle_invalid-changed-in-multiple-services/">How is BLE_CONN_HANDLE_INVALID changed in multiple services</a>.</p> <p>However, you are free to call <code>our_termperature_characteristic_update()</code> as fast as you want, but at a certain point the transmit buffer will overflow and <code>sd_ble_gatts_hvx()</code> will return <code>BLE_ERROR_NO_TX_PACKETS</code>. This error is pretty easy to handle though; make some sort of <code>if(returned error == BLE_ERROR_NO_TX_PACKETS)</code> check, and simply try again until the function return NRF_SUCCESS.</p><div style="clear:both;"></div>