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  • gdsports's Avatar
    12-05-2020, 09:35 PM
    I can't help with the vendor specific COM mode. I suggest adding more debug output to see why it is failing. It has been a while since I last used the printer driver so I tested with Arduino IDE 1.8.13 and...
    12 replies | 468 view(s)
  • gdsports's Avatar
    11-27-2020, 09:14 PM
    The example program Printer.ino detects the printer then it creates a pass through between the USB serial port (Serial) and the USB printer port. Open the Arduino Monitor (baud rate does not matter since it is native...
    12 replies | 468 view(s)
  • gdsports's Avatar
    11-24-2020, 07:39 AM
    The USB device does not identify itself as a USB printer class device. The (class,subclass,protocol) is (255,0,255) which means vendor specific. A USB printer class device would have class = 7. Consult the printer...
    12 replies | 468 view(s)
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Teensy 4.1 USB Host with ESC/POS Printer 12-05-2020 09:35 PM
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07-19-2018