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Electronics => Electronics => Topic started by: vivek9856 on February 14, 2009, 09:45:19 AM

Title: Low Voltage Stepper
Post by: vivek9856 on February 14, 2009, 09:45:19 AM

I have to drive a 1.5 A stepper motor off of a 4 AA cell power source. (4.8V because I'm using NiMH batteries)

What motor driver should I use? I don't think the L298 would work because it would require a higher supply voltage. So what does everyone else suggest? I will be using an ooPIC to drive the motor, and was initially planning on using an L297 to run the motor driver.

Title: Re: Low Voltage Stepper
Post by: Admin on February 15, 2009, 09:07:45 PM

You need a stepper motor driver. For example:
http://www.sparkfun.com/commerce/product_info.php?products_id=8368

(note, I didn't verify it can handle your required current)

Title: Re: Low Voltage Stepper
Post by: ib1yysguy on February 15, 2009, 09:19:02 PM

I think is problem is that the stepper driver that you linked to requires 7-20 or 30 volts to operate. He's running on 4.8.

Can he just amplify the voltage for that part of the circuit at a cost of amps?

Title: Re: Low Voltage Stepper
Post by: Admin on February 15, 2009, 09:32:27 PM

hmmmm I can't read . . .

Quote

# Adjustable current control from 150mA/phase to 750mA/phase
# Power supply range from 7V to 30V.

Have a search through these (all 5 pages), you might find something:
http://th.mouser.com/Search/Refine.aspx?N=1323043&Keyword=%22stepper+motor%22&FS=True