I’m using an A4988 with a #1205 stepper (3.8 V, 670 mA). I set the current limit on the A4988 to ~670 mA and turned on 1/16 step microstepping. However, I noticed that when I set my power supply voltage to be > 10 V and microstep slowly, the motion is kind of jerky, so I’m not sure whether it’s correctly microstepping. It’s a lot smoother if I set it to ~7 V, but then again that’s below the minimum supply of 8V.
What are the optimal current/voltage conditions for microstepping?