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I don't think any Series DC controller has knowledge of RPM.
You would need a sensor on the motor itself to know its speed, and then you can take that and use it to alter the throttle given to the Curtis.
I dunno, maybe you could resolve it by knowing the voltage and current, but, I wouldn't mickeymouse about if this is important to you, just get a cheap speed sensor for the motor shaft.
You would need a sensor on the motor itself to know its speed, and then you can take that and use it to alter the throttle given to the Curtis.
I dunno, maybe you could resolve it by knowing the voltage and current, but, I wouldn't mickeymouse about if this is important to you, just get a cheap speed sensor for the motor shaft.