Einsy RAMBo (main MCU) with SKR Mini E3 V2
Danger
This guide is an expert guide only
Info
This modification is designed for the Prusa MK3/S/S+, and depends on this Klipper configuration.
Why?
When printing fast, the TMC2130's on the Einsy RAMBo can get quite loud. The TMC2209's on the SKR Mini are much quieter and support denser microstepping.
BOM
| Name | Price | Quantity | Link | Notes |
|---|---|---|---|---|
| PSU -> Einsy Cable | $7.99 | 1 | PartsBuilt3D | |
| Stepperonline NEMA17 | $9.99 each | Amazon | 2 | Replaces current XY motors |
Wiring
First, unplug the 3MS steppers from the SKR Mini, and the XY steppers from the Einsy RAMBo. The motors will need to be switched due to different connector types between boards.
This table outlines the major wiring of this modification.
| Einsy RAMBo | SKR Mini E3 V2 | Motor |
|---|---|---|
| PSU+ | POWER+ | |
| PSU- | POWER- | |
| XM | 3ms0 | |
| YM | 3ms1 | |
| XM | X | |
| YM | Y |
Configuration
In your printer.cfg, comment out these lines:
| printer.cfg | |
|---|---|
Next, copy the contents of 3ms/controllers/einsy_rambo_with_skr_mini/xy-motors.cfg and ze-motors.cfg to klipper-prusa-mk3s/skr/xy.cfg, and klipper-prusa-mk3s/mk3s/ze.cfg, respectively.
Add the following new lines:
Restart Klipper.