Stepper Motor Tuning

thingiverse

Installing a new MKS Base motherboard led to shifted prints, particularly larger and more complex ones, as well as combined prints - extremely frustrating! Recalling previous experience revealed that stepper motors were involved in this issue, not slicing, memory cards, or power stability. To aid future reference, I'm documenting the installing adjustments below. Voltage measurements are taken between the USB casing and stepper motor potentiometer. Currently, the potentiometer is set to 1.2 volts instead of the recommended 0.9/1.0 volt range. Before adjusting, motors reached temperatures around 41°C, indicating excessive current/voltage levels. After adjustment, they cooled down to approximately 26°C - about 10°C above room temperature. Stepper motor issues arise when voltage is too high, causing motors to overshoot and shake prints loose, especially larger ones. Conversely, a low voltage can prevent motors from overcoming sliding resistance or displacing printed mass.