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MK3S+ Hot End on a MK2.5S. Which firmware?  

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dapug
(@dapug)
Eminent Member
MK3S+ Hot End on a MK2.5S. Which firmware?

I have a stock MK3S Plus hot end and I want to put it on my MK2.5S.  Will I just use the MK3S+ firmware?  Or will I need a modified firmware that understands the MK2.5 hardware configuration but ALSO the MK3S extruder? 

For example: Bondtech makes a MK3S hot end upgrade for the MK2.5 but they then offer a modified version of the Prusa firmware in order for it to run.  Should I just use that firmware?

Questa discussione è stata modificata 2 months fa da dapug
Postato : 28/10/2024 4:10 am
dapug
(@dapug)
Eminent Member
Topic starter answered:
RE:

OK, I will answer my own post, this community is dead, but understandable... MK2S is antique!

Basically, no, you cannot run MK3S+ firmware even though the MK2.5S+ has nearly everything needed on the extruder.  This is because it only works on the old 13a mainboard and 12v system.  The dang MK2 system is stuck with a crappy 12v heatbed.

I think I could run MK3S+ firmware if I do the following:

  • Buy the newer, better, 24v v10a MK3 mainboard
  • Buy a 24v PSU
  • Run BOTH power supplies
  • Hook the 12v PSU to the Heatbed terminals 
  • Hook the 24v PSU to the other mainboard terminals
  • Remove endstop switches (no longer needed)

 

Now I'd have essentially a MK3S+ but with an inferior MK2S frame.  The PSU and mainboard is not too bad a cost to gain these benefits:

  • quieter machine
  • faster print
  • somewhat improved quality
  • less fire risk!  (stupidly terrible heatbed connectors on the old 12v mainboard - mine burnt out 3 times)
Questo post è stato modificato 2 months fa 3 tempo da dapug
Postato : 02/11/2024 7:12 am
nhand42 hanno apprezzato
dapug
(@dapug)
Eminent Member
Topic starter answered:
RE: MK3S+ Hot End on a MK2.5S. Which firmware?

One quick point: the above list of bullets assumes that you've bought or built a MK3S+ extruder (add that as a bullet above)

Postato : 02/11/2024 7:25 am
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