stepper motor 16hs13-0404s l 34 mm nema16 with 1.8 deg 0.4 a 21 n.cm and bipolar 4 lead wires

the one-chip computer controls the stepping motor through software, and better taps the potential of the motor. therefore, the use of single-chip microcomputer to control stepper motor has become an inevitable trend, and also in line with the digital era.