Duet2 or Duet3 for new Jubilee build
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@jens55
That' s cheaper than the 6HC with expansion and i will need 11 drivers.
And with the new 1LC tool board input shaper will be supported soon.
Also the can bus makes wiring much easier.
For me, a Duet2 is no longer an option. -
@diy-o-sphere, got it. Agreed on the CANbus. I think that simplifies things a lot and makes the wiring more reliable. I was just a bit concerned with all the issues that were reported. Most of that is expected with the fast development pace but I don't need CAN that badly if I end up with other issues.
There have been comments about people having issues with attached SBC's and actually reverting back. Well, the Duet3 6HC doesn't have wifi on the board so if I want to run wifi, I need the SBC. -
@jens55
I partially agree with you. Fortunately, I rarely need a SBC.
You always have to gain experience with a new technology.
I hope that the problems can be solved quickly. -
In theory, Canbus and tool boards would be the way to go. However I'd hold fire for now (which is what I'm doing) because gen 3 firmware still isn't reliable enough (IMO) even after nearly 2 years. I'm running a version of the latest beta but still have unresolved issues. I reported the latest problem via a different medium to these forums on 26th April and have been away for a week. Bit disappointed to find that nothing has happened in the intervening period. Maybe in another year or so.....
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@deckingman are we talking esoteric stuff that the average human likely wouldn't see or are we talking stuff that is used everyday by an average person spending way too much money to just print little toy boats all day every day?
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@jens55 are the TMC2209 drivers on the Duet 3 Mini sufficient to drive the Jubilee motors? If so then I suggest you start from that. You can expand it via CAN bus, and you can also add two mode drivers on a daughter board.
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42, yes it's just a standard Jubilee I am building so the drivers should be fine. The reason I was thinking 6HC board is because it is only $100 USD more and I won't be kicking myself at a later point for saving a few dollars. I am a bit concerned about there possibly being a hardware upgrade in the works though.
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@jens55 said in Duet2 or Duet3 for new Jubilee build:
@deckingman are we talking esoteric stuff that the average human likely wouldn't see or are we talking stuff that is used everyday by an average person spending way too much money to just print little toy boats all day every day?
Dunno - what is an average user? Given that you (and I) want to build a tool changer, then that likely means using expansion boards of one sort or another. Most of the problems I have encountered (and still encounter) are related to the use of expansion boards. Whether that is related to CanBus or some other aspect of expansion boards, I'm not qualified to say.
The latest 3.3. beta3 broke my printer yet again. I use M116 in a macro to wait for temperatures to stabilise. When this was executed, the board reset and this lost all it's homing status. Apparently this was due to something called a stack overflow.
I'm currently running another binary which has fixed that issue but this gives other error messages such as "Warning: Discarded msg src=3 typ=4510 RID=80 exp 81". That's what I reported on 26th April but I'm still waiting for a fix.
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@jens55 said in Duet2 or Duet3 for new Jubilee build:
@dc42, yes it's just a standard Jubilee I am building so the drivers should be fine. The reason I was thinking 6HC board is because it is only $100 USD more and I won't be kicking myself at a later point for saving a few dollars. I am a bit concerned about there possibly being a hardware upgrade in the works though.
If you are using the Recommended LDO Motors for x/y then IIRC the recommended drive current for them is around 2.4 amps don't think the 2209's can supply that but I could be wrong on both counts my Jubilee is at about the 80-90% complete at the moment. but I have a 6HC plus a 3HC on mine it will have 3 tools plus an ASMBL Tool so 9 drivers is sufficient
@DIY-O-Sphere would be interested to know how you came up with the figure of 11?hth
Doug
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@deckingman, the stack overflow is fixed in firmware 3.3RC1+1 and we are about to release 3.3RC2. Unfortunately when using RTOS, there are as yet no good tools for establishing how large the size of each task stack needs to be. If we make them too large than that wastes RAM, which we can't afford to do on the Duet 2 builds. So we set them to a high value initially, then after doing things that we think use maximum stack, use M122 to see how much spare is left. The we remove some (not all) of that spare. However, it sometimes happens that certain configurations that we haven't tested with use a lot more stack than normal, which is why in beta releases a few users sometimes report stack overflows.
The warning messages are nothing to worry about because we established that they are duplicate "success" messages; but on my list to investigate further and fix.
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(UTC+1)
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@dougal1957 said in Duet2 or Duet3 for new Jubilee build:
If you are using the Recommended LDO Motors for x/y then IIRC the recommended drive current for them is around 2.4 amps don't think the 2209's can supply that but I could be wrong
Just looked it up the x/y motors are 2 amp motors and you wouldn't run them at 100% power but it is getting close to the driver limit so a good point.
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@jens55 said in Duet2 or Duet3 for new Jubilee build:
@dougal1957 said in Duet2 or Duet3 for new Jubilee build:
If you are using the Recommended LDO Motors for x/y then IIRC the recommended drive current for them is around 2.4 amps don't think the 2209's can supply that but I could be wrong
Just looked it up the x/y motors are 2 amp motors and you wouldn't run them at 100% power but it is getting close to the driver limit so a good point.
yes they are 2amps RMS so you would run close to that in fact I do know that the devs use around 2.4 amps to them to get the additional speed out of them (They are high Temp motors as well)
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@diy-o-sphere said in Duet2 or Duet3 for new Jubilee build:
AS jens has asked what are the tool parking motors and wouldn't you need 3 if you have 3 tools?
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@dougal1957, thanks .... that pretty much only leaves the 6HC board as a viable contender.
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@jens55 said in Duet2 or Duet3 for new Jubilee build:
@dougal1957, thanks .... that pretty much only leaves the 6HC board as a viable contender.
not really as you could use a 3hc as a slave to a duet3mini but you don't have to run the XY motors flat out if you don't want to but I wouldn't go below 1.6A
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@dougal1957, grrrr, just as I made the decision ..... this is hard
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I knew the question would come up.
This is something that has been on my mind for a long time.
I want to park my tools in the front, but here they are in the way for maintenance work. So I was thinking about moving a tool platform in Z.
But this should only happen when needed, not for a tool change.
For example, at the end of a print to get more space to reach in.
I already have a concept and first CAD drafts for this. -
@diy-o-sphere ah ok makes some sense i guess but that could be done with low current motors I guess you would have to ensure that they always come bake to the normal position quite accurately tho.
