Two nrf51 module and a smartphonehttps://devzone.nordicsemi.com/f/nordic-q-a/14538/two-nrf51-module-and-a-smartphoneHi! I&#39;m am working on a project where there I need to connect two nrf51 modules and a phone. Say: Module A, module B and phone P. The setup i a bit tricky to explain, but here goes: Module A shall be a peripheral. It has a sensor connected toen-USTelligent Community 13Mon, 20 Jun 2016 10:01:59 GMTRE: Two nrf51 module and a smartphonehttps://devzone.nordicsemi.com/thread/55541?ContentTypeID=1Mon, 20 Jun 2016 10:01:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:40d6ae55-ae71-47df-b161-574487bba487Petter Myhre<p>@Christian E Correct. You can have a look at \examples\ble_central_and_peripheral\experimental\ble_app_hrs_rscs_relay in SDK 11. <a href="http://%5Cexamples%5Cble_central_and_peripheral%5Cexperimental%5Cble_app_hrs_rscs_relay">This</a> example on Github may also be useful. You could also consider having another protocol between A and B, for example ANT or gazell, examples found in \examples\multiprotocol. Or <a href="https://devzone.nordicsemi.com/blogs/733/running-micro-esb-concurrently-with-ble/">ESB</a>.</p><div style="clear:both;"></div>RE: Two nrf51 module and a smartphonehttps://devzone.nordicsemi.com/thread/55540?ContentTypeID=1Mon, 20 Jun 2016 09:51:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:37cd1bfa-4dbb-4ca9-b5b0-7cb214908f91Christian E<p>Yes preferably. What other method did you have in mind?</p><div style="clear:both;"></div>RE: Two nrf51 module and a smartphonehttps://devzone.nordicsemi.com/thread/55539?ContentTypeID=1Mon, 20 Jun 2016 09:47:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:20d7855e-29b3-422b-ba56-14ca151600a8awneil<p>Is it essential that the B-to-A link is BLE ?</p><div style="clear:both;"></div>RE: Two nrf51 module and a smartphonehttps://devzone.nordicsemi.com/thread/55538?ContentTypeID=1Mon, 20 Jun 2016 09:03:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5acfc9a3-2ee1-484d-9aa0-62a242936a9cChristian E<p>Thank you for the response. So a possible solution is to have P connect to B, where P is central and B is peripheral. Concurrently B and A connects if A is present, where B is central and A is peripheral. Is this correct?</p> <p>Which example can I base this of? Specially the B module part where it must have two connection at the same time, one as central and one as peripheral. Multilink with s130?</p> <p>Again thank you for your input.</p><div style="clear:both;"></div>RE: Two nrf51 module and a smartphonehttps://devzone.nordicsemi.com/thread/55537?ContentTypeID=1Sat, 18 Jun 2016 12:14:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2578cf32-da1a-4830-81ca-29916a97815dawneil<p>Agree: Why do they all need to be connected?</p> <p>Since B is &quot;always present&quot;, it would seem most obvious to have the phone just connect to B and to access A via B if A is present.</p><div style="clear:both;"></div>RE: Two nrf51 module and a smartphonehttps://devzone.nordicsemi.com/thread/55536?ContentTypeID=1Fri, 17 Jun 2016 13:51:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3ef439d3-30f7-4449-aace-7e5f82f93db9Petter Myhre<p>The S130 v2 SoftDevice supports up to 8 connections in total, up to 8 connections as a central, and 1 connection as a peripheral.</p> <p>Seems like you want A, B and P to be connected to eachother, which means that all of them needs to be in the central and peripheral role concurrently. This is supported by our chipsets, but the peripheral role support for smart phones is pretty fresh, I&#39;m not sure how well it actually works.</p> <p>Why do they all need to be connected? It is not enough that A is connected to B, and B is connected to P?</p><div style="clear:both;"></div>