This repo contains the modifications and current configuration files for my Monoprice Maker Select 3D v2 which is a rebranded Wanhao Duplicator i3 v2.1.
The main board in this printer is an BTT SKR-Mini E3 V2.0.
The screen is still the stock screen. A custom cable was created so that it could work with the new main board, see pinout below:
| LCD Pin | SKR Pin | Description |
|---|---|---|
| 1 | 7 | CS |
| 2 | 3 | Encoder B |
| 3 | 8 | LCD Data |
| 4 | 5 | Encoder A |
| 5 | 6 | SCLK |
| 6 | 2 | Encoder Button |
| 7 | 4 | estop (RST) |
| 8 | 1 | Beeper |
| 9 | 10 | 5V |
| 10 | 9 | GND |
A Micro Swiss All Metal Hotend is currently mounted to this printer. To prevent flexible materials from bunching up inside of the extruder, a small piece of PTFE tubing has been added to the exit side of the extruder so that the filament cannot wander.
The stock bed heater is being used, but is powered through an external MOSFET. This was required when using the Melzi board, not 100% sure if it's required for the SKR but it's not hurting anything being there.
A 220x220mm piece of glass is used for the build plate.
Instead of the stock 4 point mounting system, the 2 right screws have been removed and replaced with a single screw in the middle of that edge. It is much easier to level now with only 3 leveling points. All springs have been removed; the heated plate is firmly fixed to the Y carriage with a adjustment wheel on either side of the Y carriage for easy tweaks.
A BLTouch is being used instead of the stock Z end stop. It is mounted with this STL:
https://www.thingiverse.com/thing:1762801
The stock cooler was replaced with the DIICooler and a 50mm radial fan, STL link below:
https://www.thingiverse.com/thing:1025471
Currently I have the stock 40mm fan for the hotend cooling, but it is grossly inadequate so there is also a 50mm radial fan temporarially mounted with super gluie until a better mounting system has been designed and/or printed.
Klipper is loaded onto this printer, see printer.cfg
It is running on a Raspberry Pi 3B which has been mounted inside of the control box and is powered from the SKR with a DCDC converter to drop the voltage to 5V.