How can I deliberately make a stepper motor vibrate?

Other Hardware Motors, Mechanics, Power and CNC
1

I'm using a Nema 17 stepper with a 4988 driver in 16x step mode in a dispensing application. Sometimes the output media gets hung up in the output chute. A little vibration would help.

Is there an easy way to pulse the stepper motor to make it vibrate when needed? It's ok if it turns at the same time.

Thanks!

2

I would guess that you could try reducing the microstepping to 1 and try driving the motor backwards and forwards a few steps at a suitable rate. You may need to wire output pins to the microstep controls of the driver. Would it matter if you lost steps?

3

You could up the stepper power supply to the max, 35 volts, and then try stepping a6 steps back and 16 forward as fast as you can.

1 Like
4

Move rapidly one step forwards one step back.

1 Like
5

Thanks I will try back and forth a few steps.

It's ok to lose steps. But I can't change stepping mode.

6

Fwd & rev a few steps works great. Thanks

7

Please read
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And consider if you have done this correctly.

8

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