This figure is a stepper motor drive circuit schematic. ULN2803 driver circuit constituted by the relatively large number of drive circuits, the circuit diagram shown in FIG. By MCU P1.0 ~ P1.3 output pulse to ULN2803 of 1B ~ 4B mouth, after amplified output signal from 1C ~ 4C mouth respectively to the motor A, B, C, D phase.
Figure stepper motor drive circuit schematics
Figure stepper motor drive circuit schematics
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