Hello everyone, I'm designing a system that uses stepper motor to drive a certain carriage. The problem is that the stepper cannot get past 150rpm. Here is my current setup: Arduino Uno Rugged motor shield (30-40V max, 2.8A max) Stepper motor 4-wire (6A/Phase; 3V; 0.5 ohm) Power input in the sh…

Stepper motors can not get past 150rpm

Grumpy_Mike October 24, 2012, 7:15am 11

Should the two COM connectors be connected to the Arduino ground?

Yes always connect grounds together.

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