New VCore, Klippy isn't connecting

I've got a brand new build. It's a 400, octopus 1.1, ebb42. Following the instructions, I have flashed the octopus and the ebb42, I've wired everything except the bed. I've run the macro to copy the vcore printer.cfg over, and I've edited it accordingly, including telling it about the ebb42. When I save and restart I get the message in the image, saying that Klippy is attempting to connect and to try again in a few moments, but nothing ever happens. If I restart or firmware restart, there's no changes. I can't get past this and I'm not sure what's going on.
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Solution:
I think I was being an idiot. I had disconnected the power to the toolboard for something and didn't connect it back. Once I did that I got an error that said that the toolboard was behind so I flashed it again. Now I'm getting a different error.
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42 Replies
TheTik
TheTik•9mo ago
attack your printer.cfg
Brandon
Brandon•9mo ago
blacksmithforlife
blacksmithforlife•9mo ago
when you flashed the octopus and the ebb42 - did they flash correctly? Meaning did the configurator say that they were able to connect?
Brandon
Brandon•9mo ago
yup, I had no issues at all flashing either. I was surprised cause I struggled to flash my vminion with the octopus board a few months ago when I built it. But this time around I had no issues with the octopus and the ebb42 had no issues either.
TheTik
TheTik•9mo ago
Do lights show up on the octopus? (checking that it has power) Either way, try disconnecting everything from the octopus other than the USB from the pi and see if it connects Something could be wired wrong and messing with power or data Essentially, start over with a fresh flashing of the control board to see if you can get back to zero
JaminCollins
JaminCollins•9mo ago
From a console on the RPi, run:
ls -l /dev/serial/by-id/
ls -l /dev/serial/by-id/
Brandon
Brandon•9mo ago
@TheTik The lights do show up on the octopus. There isn't much connected to it honestly. I flashed it before installing the stepper drivers like the instructions said. Using the ebb42, the only things that are connected to the octopus is the steppers (excluding the extruder), the y endstop, and the 12v 4028 fan. I got the 400 wiring from ratrig so those "should" be good. I can disconnect everything though and try again. @Jamin Collins [VC 3.1 400mm]
pi@vcore:~ $ ls -l /dev/serial/by-id/
total 0
lrwxrwxrwx 1 root root 13 Feb 29 18:35 usb-Klipper_stm32f446xx_btt-octopus-11-if00 -> ../../ttyACM0
pi@vcore:~ $ ls -l /dev/serial/by-id/
total 0
lrwxrwxrwx 1 root root 13 Feb 29 18:35 usb-Klipper_stm32f446xx_btt-octopus-11-if00 -> ../../ttyACM0
The octopus is showing up.
JaminCollins
JaminCollins•9mo ago
it may be showing up, but it is not showing up where your config is looking for it: from your printer.cfg:
#############################################################################################################
### CONTROL BOARD
### Pick the board you have installed and wired in your printer.
#############################################################################################################
#[include RatOS/boards/btt-skr-pro-12/config.cfg]
[include RatOS/boards/btt-octopus-11/config.cfg]
#[include RatOS/boards/btt-octopus-11-407/config.cfg]
#[include RatOS/boards/btt-octopus-max-ez/config.cfg]
#[include RatOS/boards/btt-octopus-pro-446/config.cfg]
#[include RatOS/boards/btt-octopus-pro-429/config.cfg]
#[include RatOS/boards/btt-octopus-pro-h723/config.cfg]
#[include RatOS/boards/btt-octopus-pro-h723-11/config.cfg]
#[include RatOS/boards/btt-manta-m8p/config.cfg]
#[include RatOS/boards/btt-manta-m8p-11/config.cfg]
#[include RatOS/boards/fysetc-spider/config.cfg]
#############################################################################################################
### CONTROL BOARD
### Pick the board you have installed and wired in your printer.
#############################################################################################################
#[include RatOS/boards/btt-skr-pro-12/config.cfg]
[include RatOS/boards/btt-octopus-11/config.cfg]
#[include RatOS/boards/btt-octopus-11-407/config.cfg]
#[include RatOS/boards/btt-octopus-max-ez/config.cfg]
#[include RatOS/boards/btt-octopus-pro-446/config.cfg]
#[include RatOS/boards/btt-octopus-pro-429/config.cfg]
#[include RatOS/boards/btt-octopus-pro-h723/config.cfg]
#[include RatOS/boards/btt-octopus-pro-h723-11/config.cfg]
#[include RatOS/boards/btt-manta-m8p/config.cfg]
#[include RatOS/boards/btt-manta-m8p-11/config.cfg]
#[include RatOS/boards/fysetc-spider/config.cfg]
From the control board you've selected:
[mcu]
serial: /dev/btt-octopus-11
[mcu]
serial: /dev/btt-octopus-11
JaminCollins
JaminCollins•9mo ago
GitHub
RatOS-configuration/boards/btt-octopus-11/config.cfg at v2.x · Rat-...
The RatOS modular klipper configuration. Contribute to Rat-OS/RatOS-configuration development by creating an account on GitHub.
JaminCollins
JaminCollins•9mo ago
if you add the following to your printer.cfg it should correct this issue:
[mcu]
serial: /dev/serial/by-id/usb-Klipper_stm32f446xx_btt-octopus-11-if00
[mcu]
serial: /dev/serial/by-id/usb-Klipper_stm32f446xx_btt-octopus-11-if00
Alternatively, you could check to see if the above referenced path /dev/btt-octopus-11 exists. it's possible it does
blacksmithforlife
blacksmithforlife•9mo ago
doing this will break the auto updates from Rat-OS
Brandon
Brandon•9mo ago
@Jamin Collins [VC 3.1 400mm] /dev/btt-octopus-11 does exist and it's a symlink back to the same /dev/ttyACM0 that the symlink /dev/serial/by-id/usb-Klipper_stm32f446xx_btt-octopus-11-if00 points to. I did try to change the config to point to /dev/serial/by-id/usb-Klipper_stm32f446xx_btt-octopus-11-if00 directly, but that didn't do anything (which is expected since it points to the same device).
blacksmithforlife
blacksmithforlife•9mo ago
I would try flashing the EBB42 using the configurator again
JaminCollins
JaminCollins•9mo ago
is it the EBB42 it's failing to connect to? Based on the description is seem to be the main MCU that it's failing to connect to.
Solution
Brandon
Brandon•9mo ago
I think I was being an idiot. I had disconnected the power to the toolboard for something and didn't connect it back. Once I did that I got an error that said that the toolboard was behind so I flashed it again. Now I'm getting a different error.
No description
blacksmithforlife
blacksmithforlife•9mo ago
that's expected since you haven't attached your thermistors attach them, and update your printer.cfg to match your hardware
Brandon
Brandon•9mo ago
the hotend thermistor is connected. The commisioning guide says that I need to try to get a bed mesh before I connect my bed heater and thermistor.
JaminCollins
JaminCollins•9mo ago
sorry for the confusion, my read of the error was an inability to reach the main MCU you won't be able to do the bed mesh until they are connected due to fail-safes, I believe it's an ordering issue in the commissioning guide
Brandon
Brandon•9mo ago
ok the bed thermistor is suppose to be connected but not the heater.
JaminCollins
JaminCollins•9mo ago
Also, I believe the commissioning guide omits mention of doing a z-tilt before the bed mesh if you don't, you'll spend a lot of time fighting to square the frame when the issue is actually a tilted bed
Brandon
Brandon•9mo ago
ok it looks like everything is connected, but my 4028 fan is screaming and never throttling down...
JaminCollins
JaminCollins•9mo ago
invert the pin for it
Brandon
Brandon•9mo ago
switch the red and the black?
JaminCollins
JaminCollins•9mo ago
just the config, put a ! in front of it
Brandon
Brandon•9mo ago
I don't see a config for the fan
JaminCollins
JaminCollins•9mo ago
[fan]
pin: !toolboard:fan_part_cooling_pin
[fan]
pin: !toolboard:fan_part_cooling_pin
it's in the include files, but you can override it in your printer.cfg after the MCU and toolboard includes
JaminCollins
JaminCollins•9mo ago
Connecting a 4028 fan | RatOS
4028 server fans are becoming a popular option for part cooling because of their light weight and great pressure and flow rates. In this guide we'll go over how to connect one and use it for part cooling. 4-pin fans usually aren't used in 3d printers, and many boards only provide 2-pin ports, but fear not! There's always a way.
Brandon
Brandon•9mo ago
that didn't make a difference.
JaminCollins
JaminCollins•9mo ago
do you have just the red and black connected or red, black, and blue?
Brandon
Brandon•9mo ago
red black and blue is grounded
JaminCollins
JaminCollins•9mo ago
and does the fan respond at all to any % change?
Brandon
Brandon•9mo ago
ok the snippet from the doc above fixed it
JaminCollins
JaminCollins•9mo ago
also, where is the blue connected? toolboard or mcu?
Brandon
Brandon•9mo ago
[fan]
pin: !fan_part_cooling_pin
cycle_time: 0.01
enable_pin: PA9
[fan]
pin: !fan_part_cooling_pin
cycle_time: 0.01
enable_pin: PA9
fixed it. It's connected to the MCU cause it's a 12v fan and there's no 12 power on the toolboard
JaminCollins
JaminCollins•9mo ago
right, the power can come from the MCU, but it can still be controlled by the toolboard, hence the question
Brandon
Brandon•9mo ago
Thanks so much. I think I'm good for now. I'll do the z-tilt and then the bed mesh. But at least I can finally move forward
JaminCollins
JaminCollins•9mo ago
but glad you go tit worked out
Brandon
Brandon•9mo ago
thanks! well that sucked. In order to run Z_TILT_ADJUST you have to home first and I guess the inductive probe isn't configured properly and it never stopped and the front two printed peices that hold the bearing for the lead screws broke off from the force before I could shut it down. I know when I built my minion the probe was somehow not matching the default config and I had to put a ^ in front or something. I'm trying to find the docs around the probe and the commands to see if it is triggered or not and I'm not seeing it anywhere.
JaminCollins
JaminCollins•9mo ago
😬 yes, all of the v-core relies on reliable z-probing
TheTik
TheTik•9mo ago
gotta test that the endstops (including Z!) are working before attempting to home 😦
Brandon
Brandon•9mo ago
lesson learned the hard way I guess
JaminCollins
JaminCollins•9mo ago
I learned the same one, the same way when switching from standard nozzle to volcano
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