https://devzone.nordicsemi.com/f/nordic-q-a/46096/thingy-service-documentationWhere can I find the specifications / documentation of the Thingy&#39;s BLE Services and Characteristics? ie, the stuff I would use in making a Central to connect to the Thingy. I can see stuff about the software implementation within the Thingy, buten-USTelligent Community 13Thu, 11 Apr 2019 16:05:22 GMThttps://devzone.nordicsemi.com/thread/181696?ContentTypeID=1Thu, 11 Apr 2019 16:05:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dab3b4bf-2266-4536-a736-d3f735ee004fawneil<p>I think I&#39;ve found it - under &quot;Firmware Architecture&quot;:</p> <p><a href="https://nordicsemiconductor.github.io/Nordic-Thingy52-FW/documentation/firmware_architecture.html#fw_arch_ble_services">https://nordicsemiconductor.github.io/Nordic-Thingy52-FW/documentation/firmware_architecture.html#fw_arch_ble_services</a></p> <p>Not really the most appropriate title.</p> <p></p> <p></p> <p></p> <table class="doxtable"> <tbody> <tr> <th>Name</th> <th>UUID</th> <th>Type</th> <th>Data</th> <th>Description</th> </tr> <tr> <td>Base UUID</td> <td>EF68xxxx-9B35-4933-9B10-52FFA9740042</td> <td></td> <td></td> <td></td> </tr> <tr> <td>UI service</td> <td>0300</td> <td></td> <td></td> <td></td> </tr> <tr> <td>LED characteristic</td> <td>0301</td> <td>Write&nbsp;req/Read</td> <td>Max 5 bytes</td> <td>RGB Value: <ul> <li>uint8_t - Mode (retained for BLE connected and disconnected): <ul> <li>0 = Off</li> <li>1 = Constant</li> <li>2 = Breathe</li> <li>3 = One Shot</li> </ul> </li> </ul> Constant mode (retained for BLE connected): <ul> <li>uint8_t - R intensity (0 - 255)</li> <li>uint8_t - G intensity (0 - 255)</li> <li>uint8_t - B intensity (0 - 255)</li> </ul> Breathe mode (retained for BLE connected): <ul> <li>uint8_t - color: <ul> <li>0x01 - RED</li> <li>0x02 - GREEN</li> <li>0x03 - YELLOW</li> <li>0x04 - BLUE</li> <li>0x05 - PURPLE</li> <li>0x06 - CYAN</li> <li>0x07 - WHITE</li> </ul> </li> <li>uint8_t - intensity (1-100) [%]</li> <li>uint16_t - delay [ms] (50 ms - 10 s)</li> </ul> One shot mode (retained for BLE connected): <ul> <li>uint8_t - color: <ul> <li>0x01 - RED</li> <li>0x02 - GREEN</li> <li>0x03 - YELLOW</li> <li>0x04 - BLUE</li> <li>0x05 - PURPLE</li> <li>0x06 - CYAN</li> <li>0x07 - WHITE</li> </ul> </li> <li>uint8_t - intensity (1-100) [%]</li> </ul> Default connected behavior: <ul> <li>Mode: Breathe</li> <li>Color: CYAN</li> <li>Intensity: 20%</li> <li>Delay: 3500 ms</li> </ul> </td> </tr> </tbody> </table> <p>The description&#39;s not very clear; I think it&#39;s trying to say that the format is one of:</p> <ol> <li>Off. (1 byte)</li> <li>Constant, R, G, B.&nbsp;<span>&nbsp;(4 bytes)</span></li> <li>Breathe, color, intensity, delay.&nbsp;<span>&nbsp;</span><span>&nbsp;(5 bytes)</span></li> <li>One Shot, color, intensity.<span>&nbsp;</span><span>&nbsp;(3 bytes)</span></li> </ol><div style="clear:both;"></div>