COST VS PRECISION-HQ External Micro Step Duet Wifi and Wiring



  • Hello a pleasure to greet you. I was reviewing the numbers on configuration of external drivers, but it is very brief and I am something new but my input project is to make a 3D printer of high precision and speed with low vibration etc. then for this I will use stepper motors NEMA17 Stepper Motor 1.5A 0.52Nm 2Phase 48.3mm (1.9in.), model MS17HA6P4150) 0.9 Deg Moon's brand the same brand has a driver with emulation but I have no idea what it would be like to do wired to configure in the Duet Wifi, although I understand clearly that I must use the pin com LCD, you with more experience my question would be the following, how much performance can I get to the SR3-Mini controllers from Moon's with the Duet Wifi, can give me that high precision with reduced inertia and precise control? and how would the connection between this and the Duet Wifi?



  • Why wouldn't you use the built in trinamic drivers? They should be as good, if not better than the moons sr3-mini.

    If you do really want to use the moons drivers, you would be connecting up the step, direction and enable pins to channels on the expansion connector.

    Then, you would set which axis is which in the config file and you should be good to go? You may also have to set which pin is which output, but that shouldn't be too hard.

    The easiest way is just to use the built in drivers which are some of the best on the market. All in all, that makes the duet an amazing value because you don't have to spend loads extra to get better stepper drivers.



  • Timothyz is spot on. Step/Dir is the interface to external drivers. The section in the WiKi is short because the interface is simple, and "just works".

    He is also correct that the built in drivers are likely better, AND the firmware has SPI access to them, so it can set current, detect faults, etc.

    Can you link to the motors, and particularly the drivers, so we can look at them in more detial?


 

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