No, the Kobra Max has a sensor built into the print head, so I have been using that for the print bed calibration. Do you think a BL touch would do a better job than the built in sensor?
I buy 3dtouch two month ago, but i have no idea how to use it with our board.Stock calibration is not the best choice if you use another extruder i think.
So. I downloaded the firmware for the max and flashed. Got the beeps. But then loaded back into the normal firmware. What should it do when you flash?
It’s not built into the print head. It’s a strain gauge and is part of the assembly that the extruder is mounted to. You can use the stock strain gauge with different extruders.
BLtouch won’t be better than the stock strain gauge. But the new lidar based leveling devices would be better.
Hello @doubleshot !
A ready to run Klipper firmware for the printer board?
The one posted here for the max.
hello,
I am getting this exact error. How did you resolve this?
A couple questions.
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How would you suggest soldering? I have a single iron and I am not the best when it comes to this like what temp should I set it to and stuff?
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what settings did you select in the firmware config on the sonic pad cause there seems to not be much info on the kobra plus for that part.
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Is this all worth it in the end? I got the sonic pad cause I was talked into it by a coworker and saw online it was compatible but now im here and nervous about soldering and messing up my board and just overwhelmed. I am ok with tutorials but most of this info feel like terrible ikea instructions where they expect you to already know how to get from point A to B.
If you’re asking basic questions like this about soldering, then you shouldn’t be considering it. Moving R65 to R66 is not that hard with the proper soldering iron (and lead free solder plus flux) that can get to temperatures of 345C or 600° F and higher. A very small tip is recommended and ideally you have a soldering tweezer for removing the part.
The simpler solution is to replace the controller board - I’d suggest a 32bit controller (with a version of the STM32 on it) and having TMC2209s. Sorry, I don’t know of any that are recommended to work with the Sonic Pad.
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So I have an iron that can get that high and I can get a thinner diameter solder. The only soldering I usually do is automotive based and some large circuit board components like a resistor replacement, I have never done anything with tiny components. Is it different or am I just overthinking it?
It’s a lot different; you’re probably underthinking it. You know your skills and equipment and you have the printer and the board so you can decide how possible it is and how you will approach it.
If you decide to give it a try, keep in mind that plan B is get another controller board.
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out of curiosity, do you happen to know what will happen if both the r65 and 66 connections are bridged at the same time or will this put out errors that the fi4mware cannot compensate for?
You’ll short the board’s 3.3V to ground.
Don’t do that.
oh, that would not be good then.
Well, it took a bit but I was finally able to get the resistor removed and just briged the gap for the other uart with some solder and I got it running klipper now! Thankyou again for answering my questions even though they were kinda stupid.
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Hello! do you have updated printer.cfg file for kobra max with stock extruder? I would be very grateful. Thank you
Will this Config File also work with the Bigtreetech Pad 7?
printer.cfg only depends on the printer hardware and not on the SBC on which you are running the Klipper host software, e.g. RPi X, Orange Pi, Pad 7 etc.
Some very minor interaction can occur depending on the way the entire setup is installed but Moonraker and KIAUH have set a defacto standard. Chances are high that it will work out of the box
Have a Kobra Plus, with the original motherboard and I performed the resistor mod (moving R65 to R66), and using the config file under klipper/config/ printer-anycubic-kobra-plus-2022.cfg. Got the firmware compiled and flashed as directed, and everything seems to have taken successfully…
But I’m running into a firmware shutdown simply trying to performing home (on any axis), with the error MCU 'mcu' shutdown: Timer too close.
Is there something I’m missing? I’m fairly confident the resistor mod was done properly.
EDIT: Figured it out. Noticed the MCU for this board was running at 200 Mhz. Didn’t see anywhere calling out to change the default 168 Mhz set when building the klipper firmware, so kept it at that originally. Re-built and flashed with the clock set to 200 Mhz, all seems to be good now.
what do you mean by
"Noticed the MCU for this board was running at 200 Mhz. Didn’t see anywhere calling out to change the default 168 Mhz set when building the klipper firmware, so kept it at that originally. Re-built and flashed with the clock set to 200 Mhz, "
@Hereticx5 any ideas?
im currently trying to get my kobra plus running klipper… used the .bin file from above and it finally started to home… now im having a issue where stepper_z error overtempwarning
