[quote=“kuraasu”][quote=“TomWen”]1. Does it have to be exactly 0.425?
2. Does it have to be exactly the same on all motors?[/quote]
Both cases: no.
Any value between 0.425 and 0.55 V will be fine, for any motor. Lower means that both motors and driver will run cooler, but higher values can be chosen when more torque is required for the motor (e.g. when you notice that the motor skips steps during printing).[/quote]
My next showstopper now is that E-motor don’t react at all when testing from Repetier-Host V0.84. Heat is on 90 degrees. In this case I suppose that swapping connections are not appropriate? I did check the soldering, looks ok. 0.439 volts goes out from the circuit board.
Sorted it out. It was the wiring. Next error is something I realized when I assembled the parts. The small gear that drivers the big gear on the extruder had, and have, a screw in plastic that doesn’t fit perfect to the hole. It doesn’t keep the small gear in place, so I don’t get any movement.
How do I get hold of a spare plastic screw or both small gear and screw? Or is there any replacment parts I can buy easily?
If I remember correctly the original grub screw is M4 (hex size 2), which would mean 3.3 mm core drill hole.
Alternatives: 3.5 mm could work, but is borderline (easy to rip out the threads when fastening the screw). 3.0 mm is too small to use the screw for self-cutting, so you’d have to use a tap, which will probably work (the sharp tip of the tap will cut away the excess plastic).
Just to be sure, measure the diameter of the grub screw before you drill. There might be versions with M3 screws out there.
[quote=“kuraasu”]If I remember correctly the original grub screw is M4 (hex size 2), which would mean 3.3 mm core drill hole.
Alternatives: 3.5 mm could work, but is borderline (easy to rip out the threads when fastening the screw). 3.0 mm is too small to use the screw for self-cutting, so you’d have to use a tap, which will probably work (the sharp tip of the tap will cut away the excess plastic).
Just to be sure, measure the diameter of the grub screw before you drill. There might be versions with M3 screws out there.[/quote]
Spare part used, with superglue. No drilling. Yes I know, but if it slips one day, I’ll make that hole. Or buy a new motor.
I’m almost thru, but I still have a problem - X-motor responds, but refuses to move or go to home position. The feel differens compared with the Y-motor is substantial, it’s far away from smooth. Soldering is ok, cables doublechecked, voltage ok.
OK, took away belt, try to turn motor by hand - it’s really substantially more resistance in that motor.
If you are positive that the motor is at the cause of troubles, please return the item for inspection/exchange to your distributor or direct to Velleman. Sorry for the inconvenience.
I ordered 1 new motor from Elfa. Will receive it any day. Cost is limited, so I will make it simple and throw the old one away. No big deal, thansk for the reply and offer
