Hi guys. I am using a servo motor in one of my projects. I would like to calculate the power the motor is inputting into my system. I will use the equation P=IV to calculate my power. Voltage across my motor will be constant. It's about 5V since that's the voltage required to run the motor. That leaves me with measuring current. One of my questions is, is the resistance of the servo constant? If so, couldn't I use the equation P=V^2/R to get the power? But that doesn't make sense to me. I think it requires more power to run the motor at higher speeds than at lower speeds. So the previous equation wouldn't make sense. My question now is how would I be able to measure my current through my servo? My circuit is pretty simple. The servo has 3 pins. 2 of the pins goes to the + and - on my power supply. The 3rd pin goes to my microcontroller. Or maybe I'm thinking about this all wrong and the power is actually the same and independent of how fast the servo is rotating?