News on Duet 3 release?



  • Do you know when the Duet 3 will be released? And what will the pricing look like?


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    We're planning a pre-production run in August. The price will be higher than the Duet2 and you will also need a Raspberry Pi 3B+ or similar to manage the communications, storage and user interface. But you will get 6 stepper drivers capable of handling somewhere between 4A and 5A peak current, 10 heater/fan drivers, 9 GPIO channels for endstops, filament monitors, Z probes etc., plus CAN bus expansion if you need more of anything.

    We expect Duet 2 to continue to be mainstream for most applications and we will continue to make minor improvements to the Duet 2 series.



  • @dc42 said in News on Duet 3 release?:

    you will also need a Raspberry Pi 3B+ or similar to manage the communications

    will the final product integrate this in some way?


  • administrators

    @veti said in News on Duet 3 release?:

    @dc42 said in News on Duet 3 release?:

    you will also need a Raspberry Pi 3B+ or similar to manage the communications

    will the final product integrate this in some way?

    No, it's not economic for us to do that. We looked at using the RPi Compute Module but by the time we add all the connectors and other missing bits, it would cost more. Also we anticipate that some of our OEMs will use a different single board computer, and some users may wish to use a cheaper Pi such as the Pi Zero which we hope to support in the longer term.

    There is a little more information at https://duet3d.dozuki.com/Wiki/Duet_3_prototype_guide_for_OEMs.



  • Does this mean for my Railcore build I could just use 1 Duet3 instead of a Duet2 Ethernet and a Duex5?
    If that is the case, I think I may wait for the Duet3 especially if the Duet3 is cheaper than 2 boards.


  • administrators

    @paulhew said in News on Duet 3 release?:

    Does this mean for my Railcore build I could just use 1 Duet3 instead of a Duet2 Ethernet and a Duex5?
    If that is the case, I think I may wait for the Duet3 especially if the Duet3 is cheaper than 2 boards.

    If a basic RailCore needs 6 stepper drivers, then yes.

    I suspect that a Duet 3 main board + RPi 3B+ will cost more than Duet Ethernet + DueX5.



  • is this taking more of an approach similar to klipper? i.e the processing of the g-code i happening on the pi?


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    @veti said in News on Duet 3 release?:

    is this taking more of an approach similar to klipper? i.e the processing of the g-code i happening on the pi?

    It's a substantially different approach. On Duet 3 only the initial GCode processing is done on the Pi, such as macro expansion. Motion control is calculated on the Duet and on its expansion boards. The main reasons for using the Pi are so that users and OEMs can hack the user interface, add additional functionality, support plugins, and support a better display more easily. Also it saves us having to run SSL on the Duet, because the Pi already supports that.

    The Pi and the Duet communicate over a dedicated SPI bus. This leaves the USB bus free for other functions, without the possibility of other USB traffic impacting on the print (unlike Klipper). Likewise, because the Pi won't be performing any critical real-time functions (again, unlike Klipper) there is much more scope for running additional tasks on the Pi.



  • FYI

    The Raspberry PI4 has just been released and its a significant upgrade

    https://www.raspberrypi.org/magpi/raspberry-pi-4-specs-benchmarks/


  • administrators

    Yes, and we'll be testing the RPi 4 with Duet 3 too.



  • Does that mean that the Raspberry Pi 3b with be handling the internet connection or will the duet 3 be similar to duet 2 for internet? If the Pi is doing then it might be prudent to get a pi and figure that out in advance?


  • administrators

    In the standard configuration, the Pi will be handle the web interface and file storage.



  • This sounds great and is exactly what my nephew and me were thinking abaout.



  • @dc42 said in News on Duet 3 release?:

    We're planning a pre-production run in August. The price will be higher than the Duet2 and you will also need a Raspberry Pi 3B+ or similar to manage the communications, storage and user interface. But you will get 6 stepper drivers capable of handling somewhere between 4A and 5A peak current, 10 heater/fan drivers, 9 GPIO channels for endstops, filament monitors, Z probes etc., plus CAN bus expansion if you need more of anything.

    You also talk about OEM support. I'm filing the paperwork for my own company this week or next, much of my plan was to either build a high-quality kit and sell just the kit and have a config for a duet or sell with one in it. Each and every component will be CNC machined, precision ground, or precision lapped so that the hardware will never be a problem for this community again, as I really have only been hardware limited as far as precision goes. Typically, CNC machined brackets, components, or kits are unnecessarily expensive and from my perspective...I can't really understand why. More people need access to this technology and the less people are fiddling with calibration and hardware, the more innovation and entrepreneurship will thrive. That's why I'll do it for nearly what it will cost me to make it.

    I run industrial CNC equipment and play with ABB and Kawasaki robots at work and the duet is about the closest I've seen to the industrial Fanuc controllers that control....well, most CNC machines. I would bet it wouldn't take all that much to replace one of the controllers for one of these machines (as I look at the CNC mills and CNC lathes) with a Duet and have it work...pretty darn seamlessly, with the exception of the whole AC motor DC stepper thing. There's probably a bit more inputs and outputs on these machines, maybe some beefier components, the principle really isn't all that different though...the hardware is.

    The big difference that I see is AC motors, the SIGNIFICANTLY higher power requirements (this Doosan CNC Lathe says up to 76 Amps @ 220v on the back of the machine), many more pump connections (oil pump, low pressure and high pressure coolant pump, something for pneumatics actuation for turret movement for tool changes, oil scavenging in the coolant, etc), the HMI (the Human to Machine Interface, or the physical controller interface), the massive footprint, castings, and motors....and some convenient safety features like an enclosure.

    I want a duet to run the majority of my machines, I'll buy a few new machines likely with Fanuc controllers (because I know it so well) and make all the machines I'll design with those to a few tenths or less. I'd prefer to have a duet run the machines I design and sell.

    This industry would not be where it is today, nor would we be on this forum today, if it wasn't for Stratasys's patents expiring and the Open-Source philosophy as well as its community. Despite many business owners advising me to maintain proprietary intellectual property, all of what my business creates will be open-source, perhaps with a slight exception or two if necessary to stay in business.

    I want one of the early prototypes/early releases.

    Do you have an estimate as when we might see them? I am extremely interested.



  • There really isn't any information on that wall of text to suggest which of the Duet boards would be the best fit for your needs. Maybe if you describe what size and number of motors you need, and other IO it'll be easier for the Duet guys to help you evaluate which board to use.

    To me its not entirely clear if you want to make 3d printer kits, cnc machine kits or convert your existing cnc machines to be controlled by a Duet.



  • @noskillzengineer said in News on Duet 3 release?:

    I want one of the early prototypes/early releases.

    Do you have an estimate as when we might see them? I am extremely interested.

    https://www.duet3d.com/Duet3Mainboard6HC


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  • @bearer said in News on Duet 3 release?:

    There really isn't any information on that wall of text to suggest which of the Duet boards would be the best fit for your needs. Maybe if you describe what size and number of motors you need, and other IO it'll be easier for the Duet guys to help you evaluate which board to use.

    To me its not entirely clear if you want to make 3d printer kits, cnc machine kits or convert your existing cnc machines to be controlled by a Duet.

    The number of motors will vary as I want to do all 3 as well as design and create new machine tools. The motors, or rather axis count, will vary from 3 to probably about 20, as of right now. There is a wall of text because I am not like any other company in this space, I want to elevate hobbyist and small business machines on an unimaginable scale. I see great potential in this project and I think it's time the industrial realm caught up with the 21st century.

    Most that know me already know where my priorities lie, the Duet2 is a powerful mainboard, if I can do what I suspect I can with the Duet3, the next iteration of the Duet3 (or a customized variant of it) will come very shortly after, even if I have to employ my own Hardware and Firmware engineers to do it (nothing personal to the team here, it would likely just be a more premium option that could more competitively compete in the industrial space, if I run into any limitations, so the overall cost to entry for the Duet3 remains competitive, then if price is no concern there's also an option for that crowd).

    I don't necessarily need someone to tell me what is most appropriate for my applications, I am familiar with the Duet and RRF (relatively speaking). I just want to start playing with the Duet3 already 😈



  • @elmoret said in News on Duet 3 release?:

    @noskillzengineer said in News on Duet 3 release?:

    I want one of the early prototypes/early releases.

    Do you have an estimate as when we might see them? I am extremely interested.

    https://www.duet3d.com/Duet3Mainboard6HC

    Thank you so much! I was unaware preorders started! I need this in my life 😂



  • @t3p3tony said in News on Duet 3 release?:

    Tim beat me to it!

    https://forum.duet3d.com/topic/11540/duet-3-mainboard-6hc-initial-production-run

    Hmmm that's a lot of information to digest....ima have some questions in that thread soon.


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