Circuit: Stepper Motor

Dave Hrynkiw
July 12, 2007

This is a neat little one-chip circuit we originally tuned for use with our "SM1" Stepper motors. We've presently sold out of the motor, but this circuit has proved to be a good unidirectional (1-way) driver for small stepper motors. Parts required are:

  • 74AC240 Octal buffer chip
  • 4 x CP0.1µF capacitors
  • 100k resistor
  • 2 x 47k resistors

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GT2 Timing Belt, sold by meter $8.02 Sold by the meter up to 10M in length! If you want a 5M length, order 5. 608ZZ Double-Shielded Bearing, 8x22x7mm $1.07 For Bearings Sake! Let it slide! 693ZZ double-shielded bearing, 3x8x4mm $1.34 Friction Be Gone! These bearings will let you slide! MF83ZZ Flanged double-shielded bearing, 3x8x3mm $1.34 […]

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New: The L293D and GM4 motor!

New products added to our inventory include the L293D motor driver IC (a staple chip used in small-robot building), and the new clear-case GM4 servo gearmotor! No electronics, just a full 360° rotating, strong, modified servo! Check out the "New Products" link on the left toolbar for pricing and details.

April 10, 2008
Solar Pendulum of DOOOM blogged on MAKE

I love MAKE magazine. I always enjoy reading (then trying) the projects in each magazine. I was a bit disappointed in their last issue where they didn't cover the complete process to make gunpowder, but that's a minor complaint. I just noticed on their blog that they're talking about our Solar Pendulum kit and Christopher […]

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Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Please visit www.P65Warnings.ca.gov for more information. This item was manufactured prior to August 31, 2018.

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