Very strange behavior, CoreXY with external drivers
I think you won't see much.
I hope you can see anything. I'm 100% shure, there is nö mistake in the cabling. I checked every single connection more than once, incl. with Multimeter.
jhonf441 last edited by
@capricorn You need to connect each ENABLE signal that comes from the breakout board to ENA (-) of each driver.
No, not necessary and my drivers don't work at all, when connected.
Capricorn last edited by Capricorn
Maybe this helps to localize the problem :
I measured the resistance between the different
X>Y = 9.74 kOhm
Z>Y = 9.74 kOhm
X>Z = 3.30 Ohm!!!
Maybe the Breakoutboard is damaged?
But i'm uncertain, because this measurements are always the same, no matter which combination of Ports 5-9 I use.
Not connected to the Breakoutboard the resistance
in each xyz combination is 7.75 kOhm (because of the common 5V line to each driver)
I was already thinking that it's time to try a new breakout board and ribbon cable. Please ask your supplier to replace them. https://www.duet3d.com/warranty
OK, i'll try that.
Thank you so much, I will report if that works.
Meanwhile I finished cabling and everything works great , only the Motors
Last Monday, i ordered a new Breakout-Board at a German supplier. They confirmed my order and told me, it's on stock and delivery time 3-4 days. Nothing happend since then.
So today i lost patience and did some further tests.
Result is, i desoldered the 4 75ALS192 chips and connected all the S-/D- to the appropriate ports on the 50-pin connector. Had to change the direction of rotation, and viola', all systems running. Perfect...
I can not wait any longer, to do my first print. I'm so exited....
Thank you all, for trying to help me with that issue.