VORON 2.4 20″x20″x20″ and DUET2WIFI

Get the documentation, specs, config.g, macros and build docs

After my succesfull buildproject of a Voron 2.4 3d printer in the fall of 2020, I still wanted a really big 3d printer with a print surface of over 20x20x20 inch.

Imagine to have a print of more than double the size compared to the below picture!

During the build and at using the Voron 2.4 printer, I found the documentation on the hardware build really excellent.  But, the electronics part was scattered around several places, and although the Klipper implementation is very good I have experienced that the combination of 2 SKR 1.4 turbo motherboards with an Octopi controller, this does not provide enough operational stability to me. And- I feel the need to control more settings than I can do with the Klipper solution.  I think I probably am just more into the Duet end reprap solution than the Klipper one, due to previous positive Duet – and MKS reprap experiences.

In a couple of previous builds I used a Duet2wifi, and I also experienced the add-ons for Duet2 like driver boards, PT100 boards end some more hardware that is also very well implemented in the new RRF3.1 firmware.

Reasons enough for me to choose the Duet2 and the 5-ports expansion board for my new to build Voron 2.4 ‘big 3d printer’.

At this page, I will share my progess on this build.

I have almost all required hardware laying around, and since I already built a Voron 2.4, I will first focus on the electronics.  For the hardware, I still need some printed parts and the plexiglass sides, top and front doors.  I  do have all extrusion, bed, bed heater 230V, linear rails end so on neatly stored at home.

So, I am setting up the electronics to know beforehand that everything works well.  I don’t want to start building the hardware and find out afterwards that my Duet2wifi will not do the job I want it to do.

Yesterday (October 4th,2020) I got the electronics and config.g together. I used:

  • Duet2wifi board with 24V PSU and 4.3 inch TFT/LCD
  • 5-port expansion board with 4 plug-in 2209 drivers V3.0
  • Z-switch mechanical
  • X-and Y end switches (hall-effect)
  • Hotend 24V with NTC connected including tool’s fan (I am missing the PT100’s interface board, have ordered one)
  • Hotbed simulated with another hotend including NTC
  • Stepper motors connected to X(0),Y(1) and 1 x  stepper on the expansion board Z(5) (Driver5)

The Duet2wifi board is a Chinese clone with electronics version 1.02 which works fine.  The expansion board is also a Chinese one, but appears to be an imnplementation of the Duet-developed version of the 5-ports driver add-on board that also comes without drivers.  the nice thing about my add-on board is, that drivers can be plugged in directly.

The Duet2 came with firmware 2.1 installed.  To get to FFR3.1, you must first install 3.0 and after this, you can move to 3.1…  be aware!

After updating the paneldue and the Duet2 board, I activated the wifi and put the ssid and PW in.  This is a bit tiresome but given the security you get from it, I feel it is OK.

The settings that are needed to get the Chinese expension board to work are not too difficult.  Add the Z-drives, and change some other settings. On top of this page, you can download the latest doc with all info I have, and a direct download to the adapted config and macros is available in the documentation.

The rest of the build including photos will be here later!