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calmasacow
What board would you recommend. Keeping in mind the printer type "Large Delta" and Software solution "MatterControl"?
Sorry, I don't know the "MatterControl" software, so I can't advise you. Given a free choice of software, if the motors you choose are happy with 1.2A or less, then I would choose the Duet board - but that's because I am writing the Delta firmware for it! Unlike most Delta firmware, it will generate the steps accurately instead of approximating each stepper motor movement as straight line segments, which may (or may not) improve print quality.
Other 32-bit solutions I am aware of (but have no experience of) are the Arduino Due + RAMPS-FD, and the Smoothieboard. But the Arduino Due doesn't have Ethernet, and AFAIK the Smoothieboard doesn't either.