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Revision to Choosing and connecting stepper motors

David Crocker

Note: '''it is highly recommended that the stepper motor casings be grounded''', especially in belt-driven printers. Otherwise, motion of the belts causes static charge to build up, which eventually arcs over to the windings. If the motors are screwed to a metal frame, grounding the frame is sufficient.
 
Each stepper motor connector has four pins. You must connect the two wires for one phase of the stepper motor between the two pins at one end of the connector, and the wires for the other phase to the two pins at the other end. To pair the stepper motor wires into phases, use a multimeter - there should be a few ohms resistance between two wires that belong to the same phase, and no continuity between wires that belong to different phases. If you don't have a multimeter, use this method:
Each stepper motor connector has four pins. You must connect the two wires for one phase of the stepper motor between the two pins at one end of the connector, and the wires for the other phase to the two pins at the other end. To pair the stepper motor wires into phases, use a multimeter - there should be a few ohms resistance between two wires that belong to the same phase, and no continuity between wires that belong to different phases. If you don't have a multimeter, use this method:
 
*With==== Identifying the stepper motor wires not connected, spin the spindle between your fingers;phases ====
*With==== Identifying the stepper motor wires not connected, spin the spindle between your fingers;phases ====
 
*ShortHere are two ways you can pair the stepper motor wires into phases:

# Use a multimeter. There should be a few ohms resistance between two wires that belong to the same phase, and no continuity between wires that belong to different phases.
# With the motor wires not connected, spin the spindle between your fingers. Short
two of the wires together, then spin the spindle again. If it is much harder to spin than before, those two wires belong to the same phase. Otherwise, try again with a different pair of wires shorted together.

[image|443]
*ShortHere are two ways you can pair the stepper motor wires into phases:

# Use a multimeter. There should be a few ohms resistance between two wires that belong to the same phase, and no continuity between wires that belong to different phases.
# With the motor wires not connected, spin the spindle between your fingers. Short
two of the wires together, then spin the spindle again. If it is much harder to spin than before, those two wires belong to the same phase. Otherwise, try again with a different pair of wires shorted together.

[image|443]
 
==== Duet 2 (Duet WiFi and Duet Ethernet) ====

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