actually i have a robotics based project in which i need to interface a barcode scanner of usb connectivity with my arduino board without using usb host shield. i want to connect it serially. if u help me that would be very much kind of u>>> thank u
Are you saying you want to use a bar code reader that has a USB socket on it with an Arduino but you don't want to use a host shield.
If that is the case then you can't do it.