Stepper motor terminals id help

Discussion in 'General Electronics Chat' started by hunterage2000, Jun 29, 2014.

  1. hunterage2000

    Thread Starter Active Member

    May 2, 2010
    400
    0
    Can anyone tell me what the 4 terminals are for the attached stepper motor please? I took it out of an old printer and the datasheet doesn't say. A book I have says it is a bi-polar stepper where the terminals are pulsed.

    I am using an ARM mbed and the digi outputs are only 3.3V/45mA while I need 24V/500mA. Usually I would use bjt's as a switch but I,m not sure how or if that would work.
     
  2. DNA Robotics

    Member

    Jun 13, 2014
    123
    26
    Test 2 wires at a time with an ohm meter. When you find 2 that have continuity / resistance, call them 1a and 1b. The other 2 are 2a and 2b. Search online for an "H bridge" circuit as the driver.
     
  3. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    5,435
    1,305
    It's a standard 4-wire bipolar stepper.

    Like DNA_Robotics said you need a h-bridge type stepper driver.

    Ebay has some full-bridge full step/half step drivers very cheap.
     
Loading...