Duet 3 Mainboard 6HC - initial production run.

[dc42]

@matej101 said in Duet 3 Mainboard 6HC - initial production run.:

@calvinx but money...

It's occurred to me that a Duet Ethernet without the Ethernet daughter board should be relatively straightforward to connect to a RPi. Maybe I'll add support for this in the future.

[gtj0]

@dc42 said in Duet 3 Mainboard 6HC - initial production run.:

It's occurred to me that a Duet Ethernet without the Ethernet daughter board should be relatively straightforward to connect to a RPi. Maybe I'll add support for this in the future.

That could be VERY handy!

[denke]

@dc42
As I remember the wifi can also be converted to ethernet. So, Is it possible for that too?

[dc42]

@denke said in Duet 3 Mainboard 6HC - initial production run.:

@dc42
As I remember the wifi can also be converted to ethernet. So, Is it possible for that too?

Yes, if you removed the WiFi module.

[dc42]

The tests on the first Duet 3 main board have passed over the weekend, so assembly of the first batch is now under way.

[Veti]

@dc42
congratulations. nice to be able to follow the development cycle as is progresses to the final product.

[mundsen]

I have order a Duet 3 - is it possible to get a 3D model? I`m designing my own railcore based corexy printer - hope to spend the time while waiting for the controller to arrive designing a housing for Duet + PI

[A Former User]

@mundsen

the pcb size and major component location is already available on the duet website. that's what I used to allow me to design a suitable holder

[dc42]

@calvinx said in Duet 3 Mainboard 6HC - initial production run.:

@mundsen

the pcb size and major component location is already available on the duet website. that's what I used to allow me to design a suitable holder

https://duet3d.dozuki.com/c/Duet_3_Hardware if you can't find it. The details of the 3HC expansion board are for prototype 2 but we don't intend to change the dimensions for the production version.

We also have another Duet 3 family board about to be prototyped, but we're not releasing details yet.

[gtj0]

Any still available in the first batch?

[Danal]

@leonmf said in Duet 3 Mainboard 6HC - initial production run.:

My experience with Raspberry Pis were that they are a full OS and don't particularly love being shut down without going through a clean shutdown. Something that a device with an off-switch isn't all that great for. Perhaps my early experiences with Raspberry Pis reflect a fear about dirty shutdown corruption that isn't a reality any more. Do I have any reason to be concerned on this or are my fears several years out of date?

Hard to prove a negative... but... I use RPi boards quite a bit. My "pull the plug" to shutdown ratio is probably 50:1 dirty. I've never seen any signs of corruption. Not once have I had to rebuild a flash. All my experience is 3B or 3B+ forward.

I have one zero, about six or eight 3Bs and/or 3B+, and quite recently two 4x4 (the all wheel drive Pi).

I have been running a 3B+ as the HMI (Human Machine Interface) for a "PlanetCNC" controller on a large-ish CNC router. This involves running PlanetCNC proprietary software on the Pi. The Pi was not perfectly stable, it would lose communications (USB) with the controller every few hours, when continuously cutting. I know it was the Pi because the same controller would run as long as I cared to test it when USB connected to a Win or Mac. I know it wasn't RFI from the motors or belts or etc. because it failed exactly the same with everything but the Pi and the Controller powered off.

The Pi 4x4 has just finished testing and is going into the shop in the next few days. It has been perfectly stable during testing, for as much as 20+ hours of (pseudo-) cutting.

The 4 is NOTICEABLY faster, more fluid in the GUI, than the 3B+. Quite nice.

TL;DR

• I've never corrupted a Pi 3 or above flash via hard power off.
• Try really hard to get a Pi 4 with 4Gig Ram, for your Duet3.

[dragonn]

In my experience this deepens on the quality of the sd card.
I had problems with "dirty shutdown corruption" too, then I replaced regular sd-card with a industrial grade sd card and this system works over 2 years with many, many dirty shutdown without any problems.
They are also some ext4 flags with can make it more hard to brake and you can even split the sd-card into partitions and mount the system as "read-only", only move home and other directors to a second partition with have write enabled.

[T3P3Tony]

@gtj0 said in Duet 3 Mainboard 6HC - initial production run.:

Any still available in the first batch?

We have sold the whole first batch, less a small reserve in case there are any that have an issue on testing, After testing is complete we might be able to release some more.

[Dougal1957]

@t3p3tony Tony as a matter of interest how many are in that first run? Do you have an estimate of delivery status ie when you are looking to ship them out?

Doug ps see you at TCT (you could take mine there for me to collect if that is easier!)

[T3P3Tony]

@dougal1957 First batch will start to ship next week, once we have an idea of how long the testing takes I will be able to give a forecast of when it will be shipped out!

[dc42]

For clarification: although we designed the Duet 3 to work with a RPi or other SBC to provide the user interface, network interface and file storage, it's possible to run it standalone (i.e. without the RPi) using the built-in SD card socket and Ethernet port, and to attach a PanelDue. Currently this requires a different build of the firmware, but I expect to combine the two builds in due course. You would need to provide your own SD card image and populate it with suitable files. The network functionality when running standalone is similar to the functionality of RRF3 on a Duet Ethernet.

[mundsen]

Hi, I`m working on a CoreXY design based/inspired by RailCore.

Dimensions : 440x440x 580mm

I Plan to install the power module in the lower part of the frame.

My question is - is it ok to install the Duet 3 + Pi in the same place? or do I get problems because of too long wires to the extruder/hot end?
Is it better to install the controller in a separate box towards the top to get shorter wires?

[DocTrucker]

@mundsen I'd read installing the boards on vertical surfaces helps with cooling the stepper drivers, or in Duet3 case the MOSFETs. Perhaps compromise and install on the vertical real surface?

PT100 are being read by the same daughter boards as used for the duet 2 boards, so their leads are likely to need careful routing to avoid major noise sources.

[A Former User]

Wire length in itself isn't going to be an issue, voltage drop and or noise could be potential issues, but that's just a matter of using sufficiently large wire gauge and possibly shielded cabling. However I don't think the proposed dimensions will be much different from my old chinesium delta kit which didn't have particularly heavy wire nor any shielded wires and worked just fine. If you can go with 24v heaters you'll have less voltage drop due to lower currents.

[mundsen]

I plan to use 24v