As another update. documentation is now at https://docs.duet3d.comby T3P3 - Duet
Best to head over to the Duet forum (https://forum.duet3d.com) as it will be easier to get input and support there.by T3P3 - Laser Cutter Working Group
Thanks for the comments on the documentation. I agree we can improve it and I am doing so (albeit slowly!). It is a slow process and possibly not as simple as some other firmwares due to the increased flexibility of RepRapFirmware. Our forum (forum.duet3d.com) also provides a place for people to seek clarification and advice specific to their setup, we try to respond as promptly as possible to quby T3P3 - General
@cwaa. Sorry you had an issue setting up the network. I do not monitor these forums frequently so please.do head over to forum.duet3d.com with further issues and we will do our best to help.by T3P3 - General
Hi Origamib The hardware design is fixed now and the PCBs have been ordered for the initial production run. There are some relatively minor changes compared to the pre-production beta test boards that we provided. the details are here: The PT100 daughterboard we supply incorporates a chip that converts the RTD reading into a digital signal that is passed to the main processor via SPI. The e3dby T3P3 - Duet
Hi Calvin No requirement for a 5v external board, the onboard BUCK circuit works fine. For the Z motors in the 0.8.5 there is only one connector so you need to arrange to wire your Z motors in series(recommended) or in parallel with the wiring. Cheers Tonyby T3P3 - Duet
Hi Calvin The pre-order is discounted significantly, I expect the price to go up by about 20% after the pre order ends (exact amount TBC). The new board has new technology on it and a large amount of development. Especially by DC42 on the firmware. Buying this board directly supports this ongoing development. Tonyby T3P3 - Duet
Hi Calvin I don't think it's likely we will bring batch 2 forward, sorry. We are still selling 0.8.5s and will continue to do so while there is demand: Cheers Tonyby T3P3 - Duet
Yes it will, we reduced the max Vin from 30V to 25V.by T3P3 - Duet
Indeed fingers crossed for tomorrow FPex Luckly if the worst happens we will have at least two years before the drawbridge is pulled up!by T3P3 - Duet
Quotebgkdavis As a stopgap measure Id be tempted to look at the 0.85 and the duet wifi, and make a patch cable between the two boards that corrected the pinouts. If you were in a rush and the Duex4 suited your needs in other ways then that would work, the pinouts for the new expansion connector are here:by T3P3 - Duet
Quotedeckingman ...... Any idea when Duex5 will be available? It's pretty much a pre-requisite for my planned printer as I'll be using 3 extruders for the Diamond hot end from the outset. It'll also have 3 Z screws, initially driven by a single stepper and looped belt but this'll be upgraded to 3 individual steppers as and when you get around to doing the firmware for auto bed levelling (I appreby T3P3 - Duet
Fpex I did wonder when i saw an order for batch 3 with batches 1 and 2 still having boards, thanks for your support! Cheers Tonyby T3P3 - Duet
Lets collate a wishlist for this expansion break out here:by T3P3 - Duet
Quotedc42 Quotesgawad Just preordered Is there a way to get X,Y,Z,E0,and E1 (enable, step and dir) out? That would require 15 extra connectors pins obviously or are the test points large enough? I was thinking for my large build that if 2 amps are not enough I would get some gecko or such. I guess it would be relevant at least for x, y and z since it's a delta that would mean a total of 3x3 coby T3P3 - Duet
Apologies I have fixed shipping to Australia, NZ and a few other countries.by T3P3 - Duet
I did not want to add another SD card slot onto the board - it is getting tight already. There is a SPI channel broken out which could be used for another SD card, for example on the PanelDue. This would require firmware support thoughby T3P3 - Duet
QuoteElmoC I should be able to do that as long as I don't run the Panel. Hi ElmoC yes that should be fine @BobC indeed!by T3P3 - Duet
Hi ElmoC The BUCK is a Allegro A4403 which has a maximum rating of 2A If you look at this blog post it shows the testing done on a 0.6 - but the BUCK circuit is very similar: As you can see it 1.5A draw on 5V its now at ~60C The amount of 5V that is used by the Duet varies, for example if you have a PanelDue plugged in - the LCD backlight draws 5V which depends on the screen size. The amounby T3P3 - Duet
The onboard 5V is provided by a BUCK not a regulator because a regulator from 24 down to 5V would dissipate a lot of heat and require more board space. We don't plan to provide enough 5V on the board to allow for Raspberry Pi/Cameras etc to be powered by the onboard 5V. Cheers Tonyby T3P3 - Duet
WZ9V Indeed - it is on the TODO list! Regards Tonyby T3P3 - Duet
We have not used it on Prusa i3, however we use it on Mendel90 Cartesian printers and from a point of view of what the printer controller needs to do they are similar. It is pretty much a drop in replacement for the RAMPS from a hardware perspective, with the one exception of not having control for a servo actuated probe. The advantages and key difference is the Firmware philosophy of everythingby T3P3 - Controllers
Hi Neil I have been using duets with our flavour of Mendel 90 for a couple of years now. The work that David Crocker (DC42 on these forums) has done on the RepRapFirmware has continued to expand the functionality and quality of prints. My blog post of using the Duet +Duex4, while a bit old now, is the first time I talked about using it for multi extruders: That said we routinely do long printby T3P3 - Mendel90
This is really great work David, thanks!by T3P3 - Firmware - mainstream and related support
Ahh good point, the pin labels above are for the Duet 0.6, the 0.8.5 is as you describe (also that's for E5 not E1 as E1 is not on the main board) Cheers Tonyby T3P3 - Delta Machines
Hi I have had a few enquires about this: There are 4 sets of pins on the expansion header that are used to drive the 4 steppers on the Duex4 and could be repurposed to drive external drivers by connecting the step, dir and enable lines to the external drivers. You can change the order of the pins in the firmware for step, Dir and enable so that E2,E3,E4,E5 (on the Duex4) become X,Y,Z, E0 (normaby T3P3 - Delta Machines
Well the reason for doing a Duex4 with pluggable drivers would be to allow use of the DRV 8825s in stepstick format - but those have a trimppot on the boards for current control.by T3P3 - Controllers
Olaf Yes as David said did not want to tue people to the DRV 8825 as it is known to have a few issues when used for 3d printing. We have supported a number of customers now who want to use the expansion header for driving the movement axis and the on board steppers on the duet for the extruders (for large format printers rather than for 32 micro stepping). In these cases so far we have modifiedby T3P3 - Controllers
It does, we shall see if there is any practical improvement in performance using the DAC!by T3P3 - Controllers