Fly-RRF-36 RP2040 Based CAN-FD Toolboard
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@Exerqtor the SB2040 variant would be based on the SB2040v2 that flymaker sells now
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Are there any EU-based resellers?
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@0nn0 not currently that i'm aware of
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meltbro has some mellow stock, maybe ask them.
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@jay_s_uk Heyy I just saw this now;
Looks wicked!
A couple questions;
1- I see the encoder options are unavailable; is this still in development?
I could I install the hall sensor myself on the unpopulated board version if there's a firmware for it2- What is the USB-C for? Firmware update?
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@fractalengineer I am not Jay, but I can offer some answers.
- support for the encoder, and so far no use case for an encoder on a board that is probably always being used for an extruder motor has been presented.
- THe USB-C is for initial firmware installation. The latest RRF beta can do updates by way of M997 IIRC
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@oliof thank you for your answer,
Interesting I could totally see it used to detect extruder jams, or correcting for small shifts/stalls when extruding at the limits of the hot end envelope
Either way the UVP seem rather attractive already I'll be getting one regardless
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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.
