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Before controlling the stepper motor, it is necessary to perform zero position calibration to obtain accurate angle readings and achieve accurate position control. Jindi Motor teaches you several methods for zero position calibration.

1、 Direct zeroing method

First, install a stop block at the zero position, and then drive the stepper motor towards the zero position until it stops at the position blocked by the block, which is the zero position. Although this zeroing method is simple, it can cause damage to the stepper motor because when the motor is blocked by a stopper, it will still drive the motor to perform the zeroing action, causing severe shaking on the feed surface and damaging the stepper motor.

2、 Zeroing method of dedicated motor drive chip with stall detection

This chip can immediately detect the stopped state of the motor when it stops, thereby determining the zero position. Although it is fast, its universality is poor

3、 Sensor zeroing method

First, install Hall switches, photodiodes, and other sensors at the zero position. When the stepper motor returns to the zero position, the sensor sends a control signal to stop the motor at the zero position. This zeroing method is accurate and non-destructive to the motor.