MK3 & MK3S Einsy RAMBo electronics wiring

Updated 1 week ago ​by Tomáš Chvalina

With our Original Prusa i3 MK3, we have introduced a brand new Einsy RAMBo board. Compared to its predecessor, it utilizes brand new 24V Trinamic drivers, allowing for super silent printing. Plus, they enabled us to implement a skipped layer detection mechanism.

Electronics wiring

The electronics wiring isn't very complicated. However, organizing all the cables can be a bit challenging, so we recommend not rushing it. Take your time with proper assembly and cable management to avoid incorrectly connected plugs or even damaged cables.

If there are any issues with your printer's wiring, they will be most likely discovered by the Selftest or when running the initial Wizard. For your quick reference, we're attaching a picture with the correct wiring schematics below. However, to fully diagnose a problem with the printer's electronic parts, we recommend going back to Chapter 8 (Electronics assembly) of the assembly manual.

Note that the filament sensor is called IR sensor on the MK3S. The position of its cable is still the same.


Find out more troubleshooting tips here: Community Forum | Assembly Manuals | Youtube channel |

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