I have a bunch of different BT modules, amongst them several cheap HC-06 from ebay as well as the module from Flyduino. After a lot of squeezing Google for a while, I got most problems solved with the exception of one:
All modules can be programmed via Putty (e.g. OK on AT command)
All modules are runnig on 57600 baud (I have an additional 433MHz telemetry which is running on that baud rate and shall be used alternatively)
All modules are set on "Parity None"
All modules can be used to programm an AQ6 or M4 via PC by the GCS without any problem
Only a single one is properly working with the android app (set to BT, 57600 baud), whereas the others refuse to build up a connection.
Does anybody have an idea about tthe magic command, that will make the other work together with the app?