Hi all
I received my M4.1 kit, thank you. I was able to assemble it without too much trouble. I only had one question regarding the number of bearings. The kit came in three boxes of 10 bearings, so I didn’t put any under the motor gears.
Can you confirm the number of bearings?
Unfortunately, I have a problem that seems more serious: only one Z-axis motor is working. I swapped the cables between the two motors, and that helped identify the fault: it’s the main board driver.
I will DM you a code for a replacement board right now. I’m sorry for the trouble!
That is correct you don’t need them under the motor gear, you should have 2 spare bearings.
Thank you Ian.
Thank you Bar,
I received free shipping code but it doesn’t work (free part code is ok)
Shipping price stay at $28 for France.
I will try to repair card myself with a simple pcb reflow or exchange driver TMC2209-LA.
Sounds like I have a similar problem, but it’s weird. One of the z motors isn’t spinning when I move the z height. If I tell the z motors to move, it feels like it unlocks and I can spin the threaded rod by hand. It will not move on its own when I try to move the z.
I haven’t tried switching the plugs into the control board. Would that be next step? Anyone have any thoughts or recommendations?
Yes, switch plugs and prove the fault into the board or motor. If the motor spins in the other port it is the board. A bunch of boards seem to have the problem.
After a reflow, Z motor don’t move.
Before reflow, I’ve seen an error on wifi interface:
Z2 expect return 0x21 but send 0x00.
This error show a problem with driver.
Driver TMC2209 is dead.
So, I have only one solution: replace card board.
I’m sorry that code must have expired, I will DM you an updated one right now
Thank you Bar,
But I’ve already made my order two days ago ( #11506) without free shipping code.
And it was already sent…
I’ll refund the shipping on that right now!
Thanks, Bar
I can’t wait to get it ready to get the machine up and running.
Yeah going to try that. I also just ordered a spare board in case the board is the issue. Hoping to have more answers by this afternoon.
Hi,
I have exactly the same problem. One of the two Z outputs on the motherboard does not work. Checked by swapping the two motors on the two outputs. Is it possible to get a replacement board?
Also, wouldn’t it be possible to drive the 2 motors with a single output by connecting them in parallel? Maybe a power problem?
Would it be useful for me to run my calibration procedure anyway, as it seems rather long? I assume this data is saved on the motherboard?
I just DMd you a code for a replacement board. I’m sorry for the trouble!
Yes, I actually designed an early version of the board to work that way, but these stepper drivers have some “smart” features like skipped step detection that don’t work if they are driving two motors. We aren’t using many of those features now, but we have the option to.
Absolutely! Def a good way to start that process. You are supposed to lower the z-axis all the way down at the beginning of the process which is tough without the stepper drivers both working, but just going as low as you can by hand is probably good enough to play around with it.
I haven’t tried calibration, but it’s not too difficult to lower the Z axis. First by hand, then when my (big) fingers are limiting, by connecting each motor simultaneously…
It seems eveyones boards are bad. I had the same issue with mine and got a replacement, but then the machine never stayed connected to any of my desktops or laptops, macs or windows. I wonder if theres something else wrong with these batches?