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Anybodyknow how to control a stepper motor? I have a rear diff from a VW Touareg with a diff lock operated by a motor. I would like to get it to work somehow.
Even a wiring diagram might help, I have searched but cant seem to find anything.
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Sounds like something you might be able to adapt a Steve ward stepper indexer to control.
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I think you need to search for 'stepper motor driver circuit diagrams', such as those I found with a quick Google search here: tinyurl.com/y6zpy492 |
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squonk
Part of things
Posts: 855
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Anybodyknow how to control a stepper motor? I have a rear diff from a VW Touareg with a diff lock operated by a motor. I would like to get it to work somehow. Even a wiring diagram might help, I have searched but cant seem to find anything. You will need a stepper motor driver board to control it. However, you cannot just go out and buy one at random and hope it works. You need to find out a bit more about the stepper motor you wish to use. The current draw and the operating voltage (it may not be 12V) are the primary concerns. Once you have that information you should be able to find a suitable board on ebay for quite a low cost. www.ebay.co.uk/sch/i.html?_odkw=stepper+motor&_osacat=0&_from=R40&_trksid=p2045573.m570.l1311.R3.TR11.TRC1.A0.H0.TRS0&_nkw=stepper+motor+driver&_sacat=0Beware though, many of these boards are designed with industrial control in mind and operate with a 24V supply. |
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Last Edit: Mar 2, 2019 9:52:06 GMT by squonk
2004 Chevrolet Avalanche Z71
2005 Mercedes CLK320 Cabriolet
1996 Mercedes C180 Elegance Auto Saloon
1996 Rover 620Ti (Dead fuel pump)
1992 Toyota HiLux Surf
1987 Range Rover Vogue (Rusty)
1992 Range Rover Vogue SE (More Rusty)
2006 Chrysler Grand Voyager
2008 Corsa 1.4 Design
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Are you sure it's really a stepper motor? These would usually be used where there are multiple positions to be achieved (idle control for example), whereas I'd have thought that the diff control would be a simple in/out. This would more likely controlled by an "actuator" - a motor, possibly geared down for more torque, with built in sensors/limit switches to tell it when it's arrived at either end. This is likely to be much easier to control and shouldn't need any electronics at all.
Of course..... VAG being VAG it is probably the more complicated option.....
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1967 Triumph Vitesse convertible (old friend)
1996 Audi A6 2.5 TDI Avant (still durability testing)
1972 GT6 Mk3 (Restored after loong rest & getting the hang of being a car again)
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