Connect a Mellow Fly RRF-36 to a Duet Tool Distribution Board?
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@KenW It depends how you wire things up, that is the length of a drop cable/spur from the bus to the board. You could take the bus all the way to the board and have a very short drop cable from the bus to the board, but then you will need 4 wires for the bus (two out and two back), the bus itself can be pretty long.
You may also be able to operate things with a longer drop cable than the 1m I quoted above, but that is not something I've ever tested. Also if you only have a single toolboard then you can simply run the bus to the toolboard and terminate it there.
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@KenW Oh and this all applies to the RRF-36 board, the Duet toolboards make it a little easier to route the bus out to the board and back with 4 wires.
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Shoot I may have to rethink this.. I’ll definitely need more than 1m for a toolchanger. I’m attaching a janky wiring diagram for the RRF 36 to distribution board, colors are switched from how I wired but I’m just trying to understand the wiring so please ignore. Can you explain the 4 wires back to the bus like I’m 5, ee was never my strong point if it’s not already obvious
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@edsped you could probably just double up the CAN wires on the XT30 2+2 connection and then run one set to put on the distribution board and one set to in, mimicking the way the duet 1LC does it. Then the last board would just need a single pair on CAN wires.
You should be able to get the crimps for the CAN portion of the XT30 connectors on AliExpress -
@edsped Just to be clear the 1m is from the toolboard to the distribution board. How big a printer do you have? My e3d toolchanger uses this setup and has much less than 1m between the two for each tool. As I said it may well work with more than this, I was just going off the details in the CAN standard.
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Poor understanding of terminology on my part, will definitely be less than a meter as I plan on locating the board near the tools.
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Ultimately it will end up on this. My hope is a smooth transition with minimal downtime.
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@Herve_Smith
I think I have about 8' per tool but am hoping reduce that by using the CAN setup. If you can't tell I'm a bit out of my league on this. I'm beyond busy at the moment but my next step is to setup some sort of bench test setup and play with it for a bit before stripping down my machine.
