How to access MK4 probing data for physical bed leveling mod
 
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Orion Prim
(@orion-prim)
Member
How to access MK4 probing data for physical bed leveling mod

I've been chasing my tail trying to hit a critical z dimension on a functional part that I know is within the accuracy of my MK4. I have no trouble hitting it on smaller test prints. It took me too long to figure out what I was up against was the uneven surface of the build plate itself.

I'm looking into doing something like this https://www.schweinert.com/silicone-bed-level-mod-prusa-mk3/ . I'll need access to the results of the mesh probing to dial in the results. I found a post and screenshot where someone with an MK3s on prusaconnect was able to get a graph of that information during a print.

I got prusaconnect all hooked up and I can't find anything similar to what they posted.

Is there any way to get access to this data on the MK4?

Thanks.

Posted : 02/12/2023 8:44 pm
Theycles
(@theycles)
Member
RE: How to access MK4 probing data for physical bed leveling mod

Prusaconnect doesn't support a bed mesh visualizer because Prusa is slow like their printers and refuse to support basic features. I suspect it's because they want to hide the fact that a lot of their beds are tilted or cratered in the middle, and are relying on the mk4's touch leveling to compensate so the user doesn't notice. 

Posted : 19/12/2023 9:14 am
fabnavigator
(@fabnavigator)
Trusted Member
RE: How to access MK4 probing data for physical bed leveling mod

Take a look at this post:

https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4-hardware-firmware-and-software-help/mk4-bed-leveling/#post-698332

Posted : 10/02/2024 4:49 am
blauzahn
(@blauzahn)
Reputable Member
RE: How to access MK4 probing data for physical bed leveling mod

I prefer to get the heights as a table of numbers. I did that 2 days ago on one of our MK3S+ which we have equipped with the spring mod. Whether it is still the same way on an MK4 I do not know.

If so, please connect a laptop via USB with the Prusa, start an old fashioned terminalprogram (e.g. pronterface, on Linux I also use moserial) and within the programm, choose the serial (com on windows) port and connect to the Prusa . Then you can see the logging the Prusa writes. Punching in G80 starts the meshbed-levelling and when it is finished, G81 outputs the table with the data. Voila.

Posted : 10/02/2024 6:25 am
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