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  1. 29th August 2016, 10:14 PM #1
    KBs PensNmore
    KBs PensNmore is offline GOLD MEMBER
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    Default Stepper Motor drivers

    I've been lucky/unlucky enough to have been given about a dozen Stepper Motors, most of which are Sanyo Denki Step-Syn DC rated at 2A, from what Iv'e been able to find out these are 24V. There are 6 wires that are connected to the motor? What sort of driver board would I need to run/drive these, please?
    Either of these 2 was suggested.
    BIG Easy Driver Board A4988 V1 2 Stepper Motor Driver Board 2A Phase 3D Printer | eBay to start learning or go to one of these http://www.ebay.com.au/itm/171885898820 for a more robust version.
    These are some of the motors.
    DSCF0287.jpgMotor.jpgMotor0.jpgMotor3.jpgMotor6.jpgMotor8.jpgMotor9.jpgMotor10.jpgMotor11.jpg
    I'm looking at using some of them to make a 4 axis machine, to make Tractor Wheels as in the Toy Making Section of the forum. I realise I'll need more items to do this, but this will be a starting point.
    Regards,
    Kryn
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  2. 29th August 2016 10:14 PM # ADS
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  3. 30th August 2016, 03:53 PM #2
    Peda
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    Default

    I have some experience with the Big Easy Driver as I used them in a different type of project to drive Nema 17 size motors. Whilst they do the job, adjusting the current to suit the motor is fiddly. I think for your use you would be better off with the other driver as it has screw connections making it easier to connect and a higher current rating so should comfortably handle your 2 amp motors. With the Big Easy Driver, there are a lot of wrongly assembled versions from china on the market being sold cheap, I know as I got caught with some. There is a capacitor and resistor that have been swapped and mounted in the wrong position and they won't drive the motor and there is no come back from the seller so it can be a lucky dip.
    There is information on the web about connecting 6 wire motors to 4 wire drivers. You need to use a multimeter to find the coil wires and usually just don't connect the center wire. If the motor has used coloured wires then often the white is the center leaving red and green as one coil and blue and yellow as the other coil with black as its center. Have a read of this which is about the big easy but applies to other drivers too..
    http://www.egr.msu.edu/classes/ece48...cationNote.pdf


    Peter
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  4. 30th August 2016, 10:31 PM #3
    KBs PensNmore
    KBs PensNmore is offline GOLD MEMBER
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    Default

    Thanks for that Peter, some interesting reading.
    Kryn
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