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I just received my Wanhao Duplicator i3 PLUS. Everything prints and functions fine via SD card and the display but when connecting to my Mac computer the printer seems to restart.

  • Baud Rate: 115200
  • Serial Port: /dev/tty.wchusbserial1420

Any ideas what it could be?

Greenonline
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JRomero
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2 Answers2

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I don't know that printer. But Arduino has a feature that a USB connection causes a reset. The Idea is that this helps when doing software update as the Arduino Boot loader will be active for one second after that reset.

This can be disabled, but needs hardware modification.

Lars Pötter
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That is normal on most printers. They restart if you connect.

As you have an SD card slot I would recommend using it rather than your computer. If your connected computer goes to sleep it would also reset the connection after wakeup.

ftobler
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