I understand that Redbear Duo has dual bluetooth, and I want to implement a basic Bluetooth serial common when using HC-05 or HC-06 bluetooth module instead of using BLE. By default I dont think the Redbear duo broadcasts UUID, how can I implement simple Bluetooth standard arduino sketch so I can find the duo bluetooth and then send simple serial data?
Although the Duo supports dual bluetooth, we only designed BLE APIs and support BLE functionality only. Sorry for that. Here is the reference manual for programming with BLE:https://github.com/redbear/Duo/blob/master/docs/programming_reference_manual.md#bluetooth-low-energy-ble. Here you can find some BLE examples: https://github.com/redbear/STM32-Arduino/tree/master/arduino/libraries/RedBear_Duo/examples/03.BLE