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MMU2 5 Volt Power Fix

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DC/DC bulk cover to overcome the 5V power supply problem that affects some MMU2 units
2h 53m
1× print file
0.20 mm
0.40 mm
31.00 g
12
34
0
1009
updated October 31, 2023

Description

PDF

After having read up on the problem of my mmu2s unit at these links:

On Prusa Forum: https://forum.prusa3d.com/forum/original-prusa-i3-mmu2s-mmu2-hardware-firmware-and-software-help/i-found-serious-design-error-in-mmu2-electronics-hardware/

On Github: https://github.com/prusa3d/MM-control-2.0/issues/15

I got this voltage regulator (LM2596) :

https://www.amazon.it/dp/B08K36H6K1?tag=farspace-21

Before connecting it to the unit I did some tests I prepared the cables avoiding soldering on the MMU control board (I derived the cables directly from the connectors)

Tags

mmu2s mmu2

Model origin

The author remixed this model.

MMU2S FINDA Wire Support
 by Jackson
 
MMU2S Multi Material Upgrade Printable parts
 by Prusa Research
 

Differences of the remix compared to the original

Modified version of the mmu2-ele-cover.stl model to allow the attachment of the cover that houses the bulk to convert the voltage from 24 Volts to 5 Volts (I thank my dad for his help and for giving me one of the converters he had left over)

Finally I added further useful support to make the best use of @Jackson upgrade for the FINDA sensor cable.

License