Steppers aren't moving

Hi guys,

As you can see on topic my stepper aren't moving. I'm working with RAMPS 1.4 and DRV8825(1/32 microsteps). Here's a list of what I've been trying;

-my fan is working termocouples read temp. and ednstops send signal with M119

-I've seen some videos of tuning the driver, they fixed the value A/2.5 = Vc(1.8A/2.5=0.72 Volts) but there's thing do I have to do this with usb plugged on or off because values are changing.

-I've made tuning things. I double checked wiring etc. (my wiring order is B- A+ A- B+)

-I tried to change steps/mm values and I tried very different values.

-I bough new ramps and drivers.


Still when I click home motors stucked. Do you guys have any ideas about it? Thanks

sounds like your wiring order is wrong.. should be as follows



Ie B1 and B2 are one coil and A1 and A2 are the second coil.

Edited 1 time(s). Last edit at 04/11/2019 02:31AM by Dust.

Thanks for your answer, but the wire order is written on ramps and same as I said.



Edited 1 time(s). Last edit at 04/11/2019 02:42AM by kekocopter.

Your mistaken

there are 4 pims 2B 2A this is the first coil and 1A 1B this is the second coil

I'm pretty sure that you're right. I'm going to try it when I get home and it's going to work but I've made my connection with this picture and it looks like A's and B's are on the same coil. I think I need to make a research about how steppers work?



Edited 1 time(s). Last edit at 04/11/2019 04:10AM by kekocopter.

The stepper drivers used can only drive 4 or 6 wire steppers.

4 wires you just identify the coils and plug them in
5 wires you would need to cut the joining center taps (inside the motor) ,
6 wires you ignore the com connections an treat it like a 4 wire.
8 wires you would need to turn it into 4 wires.

I'm saying is this picture looks like 1a(a+) and 2a(a-) are on the same coil.

a+ and a- are one coil, but it should be on 1A and 1B on the ramps.

The number in 1a or 2a is the coil identifier, the letter is either end of the coil.

So 1A and 1B is one coil
and 2A and 2B is the other coil

My steppers are working. Thank you so much.