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I currently have an Unipolar Stepper Motor with 6 wire and a A4988 Pololu Stepper Driver also Arduino Board, but there are not any guide to connect Unipolar Motor with Driver, Only Bipolar. Someone help me solve this problem, does this driver support Unipolar ? and How?

Many thanks!

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    \$\begingroup\$ Yout motor is like this, to use as a bipolar motor just disregard the middle tap wire (2) and use the end points (1 and 3) \$\endgroup\$
    – alexan_e
    Feb 13, 2014 at 18:12

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A bipolar driver will drive both uni and bi polar stepper motors. Just wire as bipolar, and leave the center tapped coils disconnected.

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    \$\begingroup\$ Not all unipolar have six wires, there are also five wire motors with the tap of both coils joined which can't be used the way you describe. Fortunately the OP has a six wire motor. \$\endgroup\$
    – alexan_e
    Feb 13, 2014 at 17:59
  • \$\begingroup\$ @Tut My comment referred to using the motor as is, dismantling the motor is a totally different ballgame. \$\endgroup\$
    – alexan_e
    Feb 13, 2014 at 18:21
  • \$\begingroup\$ @Tut Oh.. I just took a look at the the link and when I saw the photo I thought it was about internal modification, my bad. It's the first time I see this idea about the common tap and its effect, I have no idea if it works or not so I can't comment on that. \$\endgroup\$
    – alexan_e
    Feb 13, 2014 at 18:31
  • \$\begingroup\$ @alexan_e I have deleted my previous comments about connecting a 5-wire motor to a bipolar drive. I am having serious reservations about doing that. \$\endgroup\$
    – Tut
    Feb 13, 2014 at 19:17

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