Hello,
I am working on a project where i have to send AT commands from an avr to a cell phone via bluetooth. A friend lent me the bluetooth device GP-GC021 (bluetooth ↔ Uart) to start experiment with.
I can make successful connections between my PC (bluetooth) and the module and exchange data successfully but i can’t make connection between my mobile phone (Sony Ericsson W880i) and the bluetooth module. My cell phone founds the bluetooth module at a device search, it tries to make connection with asking for a connection password, i enter the same default password i entered from the pc when i made the successful connections, it accepts the password putting the module at the list of “My Devices” but it doesn’t stays connected with to send data from the module to the cell phone as it does with the pc.