Is there a driver adapter board for Duet 2 External 10 & 11?
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I have a mature and stable Duet 2 Eth + Duex5 installation. I'd like to use stepper channel 10 & 11 for experiments on the machine using external drivers.
Has anyone made an adapter board to hook up external drivers to these channels?
I don't want to duplicate anyone else's work if there's one that fits my needs.
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@JRDM you can either use a partially populated RAMPs board, or some stepstick breakout boards. I use three of these with TMC2130's for my triple z on my Duet2Wifi printer:
https://www.ebay.co.uk/itm/175606028943 -
@JRDM I've done it with a BTT exp-mot v1.1 adapter. It has three sockets, but you can only use two. The ribbon cables supplied with the kit are probably too short. But longer ones are available everywhere.
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@o_lampe I meant an adapter similar to the "Duet Expansion Breakout Board" with level shifting for fully external drivers such as Geckos. But with that model, maybe I can two-step it because there's stepstick to screw terminal adapters with level shifters.
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@JRDM I thought I remembered someone was working on one a couple of years ago, but now can’t find it.
If you want level shifting for large drivers, a cut-down two-driver version of the Duet 3D expansion breakout board might be easiest. See https://docs.duet3d.com/Duet3D_hardware/Duet_2_family/Duet_Expansion_Breakout_Board
Ian
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@o_lampe On a Duet 2? I just checked the pinout on the BTT adapter and it doesn't match the pins on the Duet2.
Assuming I don't find an existing design that works, I think I'll make an adapter using perfboard.
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@JRDM
I tested it on a Fly Mellow board and I'm pretty sure they didn't 'invent the wheel new' with their EXP-connectors.
I think these EXP1/EXP2 connectors are all the same since RAMPS and Marlin.
IIRC there were versions where you had to flip the housing 180°, but the rest should match. -
@o_lampe Totally different board, totally different ports/pinouts...
