Motors make loud buzzing noise and wont turn. So I am setting up my CoreXY build and the motors will not turn.. When I try to move them using Repetier Host, all that happens is they make a loud buzzing noise and vibrate. I have Vref set 0.8 V, which I would think is enough. Here are the motors I am using: [www.ebay.com] I am using DRV8825 drivers in a RAMPS 1.4 with Marlin. Both motors do the same thing. and the z motor just doesn't move at all. Any ideas what is wrong? Thanks. https://reprap.org/forum/read.php?219,517468,517468#msg-517468 Tue, 14 Apr 2026 11:20:16 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?219,517468,517857#msg-517857 Re: Motors make loud buzzing noise and wont turn. https://reprap.org/forum/read.php?219,517468,517857#msg-517857 gmh39 RAMPS Electronics Thu, 04 Jun 2015 19:11:00 -0400 https://reprap.org/forum/read.php?219,517468,517776#msg-517776 Re: Motors make loud buzzing noise and wont turn. https://reprap.org/forum/read.php?219,517468,517776#msg-517776 gmh39 RAMPS Electronics Thu, 04 Jun 2015 15:58:41 -0400 https://reprap.org/forum/read.php?219,517468,517519#msg-517519 Re: Motors make loud buzzing noise and wont turn. https://reprap.org/forum/read.php?219,517468,517519#msg-517519 For your RAMPS it is
2B 2A 1A 1B.

But your motors are
Quote

PIN1= B-
•PIN3= B
•PIN4= A
•PIN6= A-

So you should try
2B = B-
2A = A-
1A = A
1B = B

-Olaf]]> o_lampe RAMPS Electronics Thu, 04 Jun 2015 04:01:42 -0400 https://reprap.org/forum/read.php?219,517468,517468#msg-517468 Motors make loud buzzing noise and wont turn. https://reprap.org/forum/read.php?219,517468,517468#msg-517468
Here are the motors I am using: [www.ebay.com]

I am using DRV8825 drivers in a RAMPS 1.4 with Marlin.

Both motors do the same thing. and the z motor just doesn't move at all.

Any ideas what is wrong?

Thanks.]]> gmh39 RAMPS Electronics Wed, 03 Jun 2015 23:15:48 -0400