New motherboard won't connect to octoprint

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1

What is the problem?

New motherboard (v4.2.7) won't connect to Ender-3 pro

Offline (Error: No more candidates to test, and no working port/baudrate combination detected.)

What did you already try to solve it?

tested 5 usb cables (one new and expensive)
Reinstalled Octoprint

Have you tried running in safe mode?

yes

Did running in safe mode solve the problem?

no

Systeminfo Bundle

browser.user_agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36
connectivity.connection_check: 8.8.8.8:53
connectivity.connection_ok: true
connectivity.enabled: true
connectivity.online: true
connectivity.resolution_check: octoprint.org
connectivity.resolution_ok: true
env.hardware.cores: 4
env.hardware.freq: 1200
env.hardware.ram: 915722240
env.os.bits: 32
env.os.id: linux
env.os.platform: linux
env.plugins.pi_support.model: Raspberry Pi 3 Model B Rev 1.2
env.plugins.pi_support.octopi_version: 0.18.0
env.plugins.pi_support.throttle_state: 0x0
env.python.pip: 20.3.3
env.python.version: 3.7.3
env.python.virtualenv: true
octoprint.safe_mode: false
octoprint.version: 1.5.2

Additional information about your setup

octopi-buster-armhf-lite-0.18.0

###Log

2021-06-04 15:31:42,441 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Detecting serial connection"
2021-06-04 15:31:42,476 - octoprint.util.comm - INFO - Serial detection: Performing autodetection with 0 port/baudrate candidates: 
2021-06-04 15:31:42,477 - octoprint.util.comm - INFO - Changing monitoring state from "Detecting serial connection" to "Error: No more candidates to test, and no working port/baudrate combination detected."
2021-06-04 15:31:42,478 - octoprint.util.comm - INFO - Changing monitoring state from "Error: No more candidates to test, and no working port/baudrate combination detected." to "Offline (Error: No more candidates to test, and no working port/baudrate combination detected.)"

I do suspect that the new board has a faulty usb port. My old board had a usb mini, but the new one a usb micro so I had to swap the cable. I tried several and even bought a new 1 meter data cable, but still no connection.

I tried to connect it to my computer, but win 10 doesn't detect anything.

I have taped over the 5v pin.

What else can I do to be sure the board is faulty from the start?

2

Hi :slight_smile:

It could also be a software problem.
Which firmware are you using on the board?

3

Does the printer appear in device manager? When you plug the printer into the PC does windows make sound?

4

It says Marlin 1.0.1, 2020-04-25, Ender-3 Pro

No sound whatever, and nothing pops up in device manager under Universal Serial Bus controllers

5

Insert a fat32 formated sd card into your motherboard and try it again and if you you already had an sd card in it try it without it.

6

I had the original sd card in it. I removed it and connected the usb cable to the computer and to the raspberry, but still nothing.

Any drivers I should install manually?

7

I'm sure I've misunderstood but obviously Octoprint won't run without the SD card, it hold both code and config data.

8

In this case I think they're talking about the SD card in the printer, not the Pi.

9

That's how I read it as well :slight_smile:

10

@towlerg
there is/was a weird sd card related bug on some creality boards which caused usb connection issues.

@Tomas_Carlbring
My last idea would be to check the usb port.
Maybe a pin is bend and prevents a successful connection.

11

The relevant drivers if you do want to try that are for the CH340 chip, that's what they use on the Creality V4 boards.

12

Thanks, I installed them but still nothing. I guess that without the drivers it should still go Plong and install them or show Unknown device or so?

I've mailed the seller for a replacement...

13

Looked for a bent pin, but it seems ok

14

Yeah Ch340 is fairly common, usually works automatically. Seems like a replacement is on the cards.

15

Sorry for my confusing posts, I completely misunderstood this thread.

1 Like
16

Just a FYI if anyone is curious :slight_smile:

The MB was faulty. I got reimbursed and ordered a new one, all is fine now :+1:

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