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SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

Member #238283

Member Since: July 14, 2011

Country: United States

  • Purchased two of these for evaluation for potential use in a class. Assembled both today, and drove them with an Arduino using a Pololu #713 PWM driver. With both motors set to the same speed, one drove in a 2ft diam circle to the right, the other approx the same diameter to the left! You can feel the difference in friction in the two motors. I guess I should’ve read the “no-load speed” spec of 90 +/- 10 rpm!
    Other robot chassis with the same drive system have gone almost in a straight line.
    Looks like I won’t be purchasing another 40 of these for the class! It’s actually a disappointment.

No public wish lists :(