Hello,
since we're doing an arduino project in school, I bought two step motors. Here's the link: ACT 23HS8440-23: Hybridschrittmotor NEMA 23, 1,8 °, 4,2 A, 2,52 V bei reichelt elektronik. Right now I have the problem, that the motors need the DM542 driver in order to run, but since we have a limited budget, it'd get to expensive. Is there any way or cheap alternative that would get the step motors to run properly, without using the driver?(I'm not sure on whether I'll be able to return the motors or not)
of course. look in the web "transistor h bridge "
but 2,52 V .... I don't sure
With modern bipolar steppers, the voltage is not relevant. The steppers are controlled by current limited stepper drivers. The power supply needs to supply the at least the minimum that the stepper driver needs up to the maximum that the stepper driver allows. The higher the voltage (up to the limit allowed) the more torque and speed of the stepper.
These DM542 drivers form Amazon
are only $22.00. There are cheaper TB6600 drivers available.
[quote="n1klas, post:1, topic:967113"] cheap alternative that would get the step motors to run properly, without using the driver?
[/quote]
You will not get them to run properly without a proper driver like the DM542 or TB6600. There are cheap H-bridge drivers like the L293 or L298, but they are really crappy stepper drivers and will not handle near those stepper's coil currents and anyway.
If you have limited budget, then design a discrete driver. There are guides and typical circuit schematics on a number of websites.
I've designed peak current stepper motor drivers that are low cost; a £1 or therabouts (in large quantities). This was for office machinery.
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