I made a machine for a school project, but the stepper motor keeps stopping and "jumping" around, twitching back and forth when confronted with any kind of load. I can stop it by lightly holding the shaft with two fingers. I'm powering it directly from an Arduino, which is also powering an HC-SR04 and a 9G servo. My original thought was that it was a power issue which could be easily resolved using a 1.5A voltage regulator but I'm not sure.
i have no idea which driver I'm using. Whichever one came with the ELEGOO Super Starter Kit.
To be clear the stepper works fine, but it has astonishingly low torque and stops when confronted with next to no load.