I have an Arduino Uno connected to an HC-05 Bluetooth sender/receiver chip. I am trying to create a Bluetooth connection between my Acer laptop running under Ubuntu 14.04 LTS and the HC-05 chip.

Ubuntu detects the HC-05 chip, as can be seen below.

phodor@ubuntu: hcitool scan
Scanning ...
    11:22:33:44:55:66   HC-05

I am able to create a pair between my laptop Bluetooth device and the HC-05 chip. However, I am unable to create a connection with that pair from the Ubuntu interface. The "Connection" button cannot be clicked on, as you can see on the figure below.

I tried creating a connection using the terminal, but after that the terminal still did not detect any connection.

phodor@ubuntu: sudo hcitool cc 11:22:33:44:55:66
[sudo] password for phodor: 
phodor@ubuntu: hcitool con

I also checked that my computer Bluetooth device was working.

phodor@ubuntu: hcitool dev
    hci0    AA:BB:CC:DD:EE:FF

Any idea why the connection cannot be created ? Any idea on how to do it using the Ubuntu interface or the terminal ?

enter image description here


You can find the answer in the Bluetooth connection to HC-05 paired but not connected


1.Once you have paired the HC-05 as you've described, bind the device by entering;

sudo rfcomm bind 0 "MAC address" 1

2.To trigger the connection & display the data using minicom, run;

sudo minicom -D /dev/rfcomm0

You'll notice that port /dev/rfcomm0 will be available from the arduino IDE as well.

3.To exit minicom, press ctrl+A and then X.


you can try this website for more information


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