Flashing yellow led Ver 3 › Forums › General Questions and Comments › Flashing yellow led Ver 3 This topic has 1 reply, 1 voice, and was last updated 2 years, 3 months ago by Martyn. Viewing 1 reply thread Author Posts 2018-10-02 at 13:34 #2405 Reply Francisco CaamanoGuest I did everything but after I get the code uploaded I get a flashing yellow light, is there a way to debug ? I don’t get any Bluetooth connection from the app ether. 2018-10-06 at 18:42 #2406 Reply MartynGuest With Classic Bluetooth you need to pair the BT module with the Android device before connecting to the dropController. The yellow flashing LED means the dropController is waiting for the HELLO messages from the app. Author Posts Viewing 1 reply thread Reply To: Flashing yellow led Ver 3 Your information: Name (required): Mail (will not be published) (required): Website: Cancel Submit