Duet 3 Mini 5 + 1LC toolboard
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So I just want to triple check before ordering hardware.
New project, CoreXY printer with 3 Z motors.
Proposed control, Duet 3 Mini 5 + 1LC toolboard. If I understand correctly, the 1LC has an on board TMC2209 driver, so I should be able to use the 5 on-board drivers as alpha, beta, Z1, Z2, and Z3. Giving me 6 drivers in total. I think the 6HC is overkill as I don't want or need more than 1.5A current to any of the motors, and frankly the idea of the CANbus connected hotend is actually really appealing instead of running all of those wires to the Hemera.
If this won't give me the extra driver, I guess I need to get the extra 2 driver board.
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@SupraGuy Yes, that should be fine for a single extruder CoreXY, if you're not planning to push the boundaries of current and voltage stepper motors can take. You could consider the Duet 3D Roto toolboard rather than a 1LC, which has Scanning Z Probe support. It also has a TMC2240 stepper driver, which are newer and arguably marginally better than TMC2209 drivers.
Ian
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@droftarts Thanks.
The local reseller has the 1LC boards, I don't think they have the other. I'm not looking for blinding speed, the motors that I mean to use have a 2A max current, so the TMC2209 aren't a problem.
The idea of using the accelerometer for input shaping has appeal, too. I like RRF and am not looking to jump to klipper.
Also not sure what advantages adding a SBC like a Pi to the board offers, so look g forward to that.
Considering possible multi-material, would the +2 driver expansion still work with this? Well, for that I would still want to loom at CANbus connected options, most likely.
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@SupraGuy yes, you can still add the Mini +2, but multiple tools are generally better served by using toolboards, as it saves on the wiring.
For standalone vs SBC, see https://docs.duet3d.com/User_manual/Overview/Getting_started_Duet_3_Mini_5+#standalone-mode-vs-sbc-mode
Ian
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Thanks for the info.
I found the getting started docs, and missed that section. Go figure. Thanks for the link.
So I have ordered the mini 5 and the 1LC toolboard, as that seems like the best fit for the hardware that I have and plan to use. I have a Hemera hotend already, but if I'm going to mount the accellerometer to match X and Y axes, the mount will need to be different from what looks like it's intended. Also, I have the part cooling fan and Z probe already held in place using the front side mounts, so I'll add horizontal mounting on top.
I think the biggest thing that i'm looking forward to is the input shaping. All of my printers so far have suffered somewhat from ringing. I had a chance to play wiht a printer that had input shaping enabled and it was an eye opener for sure. The CANbus wiring also seems really nice to have, getting rid of that thick bundle of wires to the hotend will be a big relief.
Thanks again!
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@SupraGuy said in Duet 3 Mini 5 + 1LC toolboard:
if I'm going to mount the accellerometer to match X and Y axes, the mount will need to be different from what looks like it's intended.
It doesn't matter which way you mount it, as long as the tool board XYZ axes match up with the machine XYZ axes in some order, with signs reversed if necessary. You can configure the mapping between accelerometer and machine XYZ axes. See https://docs.duet3d.com/en/User_manual/Connecting_hardware/Sensors_Accelerometer#orientation.
