Martyn … I tried to switch my V1 BT breadboard setup over to the V3 beta. I uploaded the new V3 sketch to the Arduino nano with no errors. I swapped the various new pin positions on the Arduino to match the new assignments for V3 as per the schematic. I installed the Android app for V3 and then tried to connect to the system. I can make a connection to the HC-06 BT module as indicated by the status light going from flashing to solid red, but the Android app does not go into “connected” status. I tried disconnecting and reconnecting several times, but I still could not get the app to recognize the BT connection.
… not sure what I am doing wrong