Bluetooth

1. Install bluez and bluez-tools. Start and enable bluetooth.service via systemctl.
2. From cli run sudo bluetoothctl.
3. Run next commands :

• power on
• scan on
• pair 98:D3:31:F4:11:FF
• input pin : 1234
• quit

4. Instal rfcomm tool (bluez-rfcomm for arch linux).
5. Run rfcomm bind rfcomm0 98:D3:31:F4:11:FF 5.1 sudo chmod a+rw /dev/rfcomm0
6. Use /dev/rfcomm0 as serial port