It is possible to use directly the Usb d+/d- and use it as a Serial port on arduino?
QuoteIt is possible to use directly the Usb d+/d- and use it as a Serial port on arduino?Yes, if the phone is a USB master. Otherwise, no, can't connect two USB slaves.RS232 to serial, just need a MAX232 or MAX3232 type chip, or a module depending on the connector needshttp://www.nkcelectronics.com/rs232-to-ttl-converter-board-33v232335.htmlhttp://www.nkcelectronics.com/RS232-to-TTL-converter-board-DTE-with-Male-DB9-33V-to-5V_p_369.html
Serial back & forth with Rx/Tx at up to 4800 is entirely different from USB running at 12 Mybytes/sec & the USB protocol that goes on between master/host & slave.
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