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 ...

The clear side cover of the AR4 MK5. The internal cooling fan, Teensy 4.1 board, and wiring are neatly visible. You can feel the designer's attention to detail in this beauty. 1. A 6-axis robot arm on ...