MP Mini Delta: OctoPrint won't connect but Repetier-Host-Mac will

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1

Running on macOS 10.13.6 (High Sierra)

OctoPrint : 1.4.0

Malyan/Monoprice Connection Fix Plugin : 0.1.3

Repetier-Host-Mac: Version 1.2.0 (105)

Python 3.7.7

OctoPrint's terminal:

Connecting to: /dev/tty.usbmodemFD1251
Using Malyan/Monoprice Connection Fix Plugin to create serial connection
Changing monitoring state from "Offline" to "Opening serial port"
Connected to: Serial<id=0x100fe5fd0, open=True>(port='/dev/tty.usbmodemFD1251', baudrate=57600, bytesize=8, parity='N', stopbits=1, timeout=10.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Changing monitoring state from "Opening serial port" to "Connecting"
Send: N1 M110 N1*125
No answer from the printer within the connection timeout, trying another hello
Send: N1 M110 N1*125
There was a timeout while trying to connect to the printer
Changing monitoring state from "Connecting" to "Offline"
Connection closed, closing down monitor

Repetier-Host-Mac's terminal:

  7:27:23 PM: Attempting to connect to printer
  7:27:23 PM: Connection opened
> 7:27:23 PM: N1 M110 *2
< 7:27:23 PM: ok N0 P15 B15 T:21.4 /0.0 B:25.0 /0.0 T0:21.4 /0.0 @:0 B@:0
> 7:27:23 PM: N2 M115 *4
< 7:27:23 PM: ok N1 P15 B15
< 7:27:23 PM: NAME. Malyan	VER: 3.7	MODEL: M300	HW: HG01
< 7:27:23 PM: BUILD: Jun 22 2017 20:42:15
< 7:27:23 PM: ok N2 P15 B15
> 7:27:23 PM: N4 M111 S6 *67
< 7:27:23 PM: ok N3 P15 B15 T:22.5 /0.0 B:23.8 /0.0 T0:22.5 /0.0 @:0 B@:0
> 7:27:23 PM: N5 M111 S6 *66
< 7:27:23 PM: ok N4 P15 B15
< 7:27:23 PM: ok N5 P15 B15
< 7:27:23 PM: ok N6 P15 B15 T:22.0 /0.0 B:24.1 /0.0 T0:22.0 /0.0 @:0 B@:0
< 7:27:24 PM: ok N7 P15 B15 T:20.5 /0.0 B:21.8 /0.0 T0:20.5 /0.0 @:0 B@:0

The problem seems obvious to me: OctoPrint is sending the wrong commands.

How do I change them to match Repetier-Host ?

2

While looking at the sources for the plugin, I notice that it doesn't work if OctoPrint is running on Windows. You appear to be running OctoPrint on MacOS and I'm going to guess that @foosel doesn't have access to a MacOS system to determine if it has similar issues as Windows.

Have you tried it without the plugin? Have you copied the connection parameters (baudrate, etc.) that Repetier-Host-Mac is using to OctoPrint (i.e. don't rely on AUTO)?

3

Couldn’t hurt to try. I will report my results.
Thanks for the suggestion.

4

No joy.
With the plugin disabled, I get

Changing monitoring state from "Offline" to "Opening serial port"
Connected to: Serial<id=0x1124b0610, open=True>(port='/dev/tty.usbmodemFD1251', baudrate=57600, bytesize=8, parity='N', stopbits=1, timeout=10.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Changing monitoring state from "Opening serial port" to "Connecting"
Send: N0 M110*35
No answer from the printer within the connection timeout, trying another hello
Send: N0 M110*35
There was a timeout while trying to connect to the printer
Changing monitoring state from "Connecting" to "Offline"
Connection closed, closing down monitor
5

It sounds like this combination does not work on Mac or Windows.
I believe I have a Pi B I can put to use.