Fly-RRF-36 RP2040 Based CAN-FD Toolboard
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Do you reckon there might be any issue running it at 29.4V?
I've checked the schematics, looks like the main 12V buck IC can take up to 40V, but the 2209 appears rated 29V and I'm not sure about the heater fet
I'm running fat Nema23 I need all the voltage I can have to get decent speeds lol
Railcore II ZL
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@fractalengineer I've asked the question
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@fractalengineer Flymaker (the designer) says 35V
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@fractalengineer I wonder how good of a match the TMC2209 and a fat NEMA23 motor will be? You'd have to throttle down the current so much, that there's not much torque left. You'll probably end up in NEMA17-range but with much bigger rotor inertia...
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@jay_s_uk Thank you very much, that does it for me!
@o_lampe Oh no the X/Y I'm running on TMC5160 from my Duet3MB6HC; I've found 65% of the rated 2.4A to be a good balance for my drivetrain.
Ideally I would have loved to try a board with a separate driver power rail to send them 48V but that would mean switching over to klipper
I have a whole couple threads on the forum if you want to learn more about running/tuning for big steppers
https://forum.duet3d.com/topic/18010/duet-3-stealthchop-2-tuning-for-nema23
https://forum.duet3d.com/topic/16297/help-needed-with-duet-3-6hc-tmc5160-stealthchop-config
Railcore II ZL
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@fractalengineer said in Fly-RRF-36 RP2040 Based CAN-FD Toolboard:
send them 48V but that would mean switching over to klipper
On my CNC I'm using a Mellow Fly board with a split high-voltage driver rail (3x high voltage, 5x board supply voltage). It runs on RRF and allows mixing various stepper drivers. Not sure about it's CAN-FD abilities, but there are newer boards from Fly...
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@o_lampe holy I might have to look into it then thanks for the heads up!
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@fractalengineer said in Fly-RRF-36 RP2040 Based CAN-FD Toolboard:
Ideally I would have loved to try a board with a separate driver power rail to send them 48V but that would mean switching over to klipper
Duet 3 MB6HC version 1.2 and later support 48V VIN.
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@KenW yes, that right. It appears they've been preloading them with 3.5b4.
I need to update the documentation on it -
I was wondering about putting a few of these in a heated chamber. Any info on maximum chamber temp before it starts having issues? i dont see any max temp specs on github or on aliexpress page. Im wanting to run between 80C-100C.
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@breed I would suggest its 85 degrees (without having to look at all the datasheets for each component).
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@jay_s_uk That's what I was thinking too. Regular duet tool board is prob the same.
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@breed it is
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@KenW I really wouldn't mix firmwares like that.
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@jay_s_uk - Great news, and thanks for your efforts!
I just purchased Set 2 with the 31865 for the pt100 temp sensor and am looking forward to getting it set up on a Duet 6HC which has an additional expansion board 3HC.
Can you please give some instructions on the correct connection to the main boards and firmware to use in this setup please?
Also, is there a provision on the tool board to connect the filament run-out sensor used on the orbiter V2?
Thanks in advance. Cheers Ken
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@KCMARINE all the info is here https://teamgloomy.github.io/fly_rrf_36_general.html
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Have (4) paired with a Duet 3 6hc running on a toolchanger. I’m a little worried about heat with the board being covered but a o far no real issues and on board temps stay under 60C. My cover is as follows…
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@KenW I'll gladly post what I have tomorrow in step format as you'll likely have to mod at least part of it to suit your needs.
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@KenW back-cover.stp
I can upload the other part but it's pretty specific to my extruder. Let me know.
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As an aside, I pulled the cover off after a 2 1/2 hour print last night and did the finger test for temps and nothing was above luke warm. I know it's not very scientific but it helped with some of my heat concerns.
