I have printer with USB OTG capability which I want to use with my Android Tab (as USB device).
Is this possible -- and if so, will it work for all Android versions from 2.3 up? Is there any driver needed for this communication?
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Did you try this App? Supports Ethernet, USB or Serial (with serial-USB adapter). https://play.google.com/store/apps/details?id=qsrtech.posprintdriver
Also, try this app from Opera Mobile Store. If this app doesn't work with your printer, send printer profile to the app server. They might add support. http://apps.opera.com/en_in/usb_printer_driver_21_developer_edition.html