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Digging in to the electrical integration for the standard Electrical Module and the new configuration needed for the milling machine: The onboard Smoothie controller can natively drive NEMA 17 stepper motors, But the mill will have NEMA 23 motors, so external drivers are required, so the challenge is to take the 3.3 volt control Logic from the Smoothie, level shift it to 5v for the bigger motor drivers and match up the STP, DIR and ENA signals so that the motors can be coordinated …

 

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