Re: JY-MCU Bluetooth Serial Module (HCARDU0004 & HCARDU0064)
Could you confirm that it is pairing with this tablet? If so, although your tablet may have successfully paired with the slave module, it wont link to it until you actually open a serial terminal connection on your tablet. If you still have no luck can you also confirm the following things:
At any point does the LED go from a slow blink to being permanently on?
What software are you using to connect to the module?
You you see the module from within the app?