Prusa i3 with Sanguinololu 1.3 not running

[mike99ca]

Hi.
I got your printer through other Chinese wholesale site couple weeks ago and finally got it all hooked up after few parts missing from kit.
Tried to run it yesterday but motors wouldn't spin only either making buzzing noise or jumping back and forth a little.
After some research I found out I should check the Vref on drives but that was set to 0.8V and didn't do any difference to change them.
Then I found out I should have 3 jumpers installed under each drive but that wasn't included in my kit also so after I did find 3 at home and was trying one by one to make it to run they still not working as they should.
Only one that I was able to make run smoothly are 2 motors on Z axis.
The other motors will somehow run after adjusting motor drives but they are not smooth.
They will spin but their RPM is bouncy and goes up and down and even stop for a second during single move from one side to the other.
Even took motors out to make sure belts are not too tight but that didn’t help either.

Now I don’t know what to do next.
Need some help.
Thanks

[techsupport]

hi mike99ca
sorry for later reply, I read your post, I quite agree with the way you use new products, The way we use may help to other new users
All your operation is correct, now my suggestion is that you should be in all caps to try again.
If you have other questions, please feel free to contact us. thank you!
Best regards!

[mike99ca]

You mean to try with all jumpers in?
Yes I want to do that once I get the jumpers.
Ordered bunch online so it will take few days to get.
Will post how it goes after.
Thanks

[techsupport]

yes, Waiting for your good news!