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Re: biqu bx 3d printer ??



On Thursday, December 23, 2021 9:07:56 AM EST Tixy wrote:
> On Thu, 2021-12-23 at 13:22 +0000, Curt wrote:
> > On 2021-12-22, Tixy <tixy@yxit.co.uk> wrote:
> > > On Wed, 2021-12-22 at 04:36 -0500, gene heskett wrote:
> > > [...]
> > > 
> > > > What utility could adjust the baud and endianess of this tty_ACM0?
> > > 
> > > I can't see how that is relevant, this is your printer's USB connection
> > > not some old style asynchronous serial interface like RS232.
> > 
> > Apparently it is though, relevant, to a virtual serial port.
> > 
> > https://www.reddit.com/r/MPSelectMiniOwners/comments/7a9zl8/issues_printin
> > g_over_usb_in_ubuntulinux/
> > 
> > Maybe the OP could try Octoprint or Pronsole.
> 
> I just read that, very strange if setting a baud rate on a 'virtual'
> (i.e. not hardware) serial port makes any difference. Unless the act of
> sending the baud rate commands over USB to the printer makes its
> software (or Linux) go into some different state where subsequent
> printing commands work.
> 
> Not knowing really what ACM is I looked for the docs on the internet,
> seems ACM is part of the PSTN subclass of USBs Communications Device
> Class (CDC) and the docs says:
> 
>    With an Abstract Control Model, the USB device understands standard
>    V.250 (AT) commands.
> 
> Ahh, AT commands, that brings back memories. :-)

Not always fond memories, every modem maker had their own interpretation of 
the Hayes cmd set.

> Still none the wiser of what hardware in the printer you would be
> setting the baud rate of though, but as I'm ignorant of the insides of
> 3D printers perhaps that's not a surprise.

There's an echo here too.

Thanks all and Merry Christmas to all.
Cheers, Gene Heskett.
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>




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