Stepper motors use a cogged wheel and electromagnets to rotate the wheel one ‘step’ at a time. Each HIGH pulse sent to the A4988 stepper driver energises the coil, attracting the teeth closest to the ...

"Just by talking to AI, real-world objects move." I realized this sci-fi-like experience through a small experiment of making an LED light up. It sounds difficult, but the mechanism is very simple. In ...