A Bluetooth LE device controlled via an HA automation.1 I was recently gifted a beautiful LED sign with a significantly less beautiful mobile app to control it. There are no buttons on the device, so ultimately I was left no choice but to reverse engineer how this LED strip worked to get it operable through Home Assistant. The device i’m targetting has a device name of ‘ELK-BLEDOM’ and uses the ‘duoCo’ iOS/Android app. Lots of people online have already reversed this device more ext...