Openthread UDP and groups with nRF52840https://devzone.nordicsemi.com/f/nordic-q-a/124805/openthread-udp-and-groups-with-nrf52840Hello, I have a series of nRF52840 devices that are already connected together in a Thread Network. My system is composed by one client and multiple servers. 1) I&#39;d like to create a firmware that use UDP protocol for exchanging messages betweenen-USTelligent Community 13Wed, 08 Oct 2025 15:33:10 GMTRE: Openthread UDP and groups with nRF52840https://devzone.nordicsemi.com/thread/550934?ContentTypeID=1Wed, 08 Oct 2025 15:33:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6317615c-46d4-409d-b25d-f3a344217afcstefanogradozzi<p>THank you, your answers have been very useful!</p><div style="clear:both;"></div>RE: Openthread UDP and groups with nRF52840https://devzone.nordicsemi.com/thread/550817?ContentTypeID=1Tue, 07 Oct 2025 13:17:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fc82793d-e43d-4e32-87f6-8c4c48c80fccAmanda Hsieh<p>Hi,&nbsp;</p> <p><span>The&nbsp;</span><a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/net/udp/README.html#building_and_running" rel="noopener noreferrer" target="_blank">UDP sample</a><span>&nbsp;demonstrates how to send and receive UDP packets. This sample can be used as a starting point for implementing UDP-based messaging between your client and server devices in a Thread network.</span></p> <p>The<span>&nbsp;</span><a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/openthread/coap_client/README.html" rel="noopener noreferrer" target="_blank">Thread CoAP Client/Server samples</a><span>&nbsp;</span>demonstrate group and unicast control of LEDs using CoAP over Thread, which is another common approach for resource control in Thread networks. These samples show how to control LEDs on server nodes using both unicast and multicast (group) messages, and may be easier to adapt for group-based control than raw UDP.&nbsp;</p> <p>Regards,<br />Amanda H.&nbsp;</p><div style="clear:both;"></div>