Arduino bluetooth module

Hello...

I need help making a bluetooth module if it is disconnected from the smartphone then the led will turn on....
Any code for this? :confused:

Did you search the internet for any results?

freeze12:
Any code for this? :confused:

Probably not, but that may depend on what LED, and what Bluetooth you are talking about. Blueteeth will typically flash their LED for ready to connect when disconnected, without any code or configuration from you, so what you really want is far from clear.

I need help making a bluetooth module if it is disconnected from the smartphone then the led will turn on....

See this thread about reading the "STATE" pin on the HC05 module.