I have a basic electronics question, I am controlling a 230v AC motor from my photon using a relay. I would like to control the torque of the motor by adjusting the motor voltage i.e. if the voltage applied to the motor is 230v it is 100% torque if it is 115v it would be 50% torque, that’s the idea anyway.
I can’t seem to find a way of doing this by the photon. Is there a variable resistor that can be controlled by the photon or do I need to just use a normal variable resistor like a light dimmer switch? Or is there another way?