2 of 3 steppers and extruder do not move

zebenak 2019-11-02 23:19:44 UTC #1

Hello all,

I just finished assembling FT5-R2 with BigTreeTech SKR v1.3 board and A4988 stepper drivers. When I tried to move the steppers only the X axis moved from both LCD controller and computer. I then plugged Y, Z, and extruder into the X axis one at a time and they all worked. I also plugged in each stepper driver into X axis and they all worked. After tring a few different things I saw/read on internet I noticed that when I tried to moved the Y or Z that the LCD showed them as moving but no sound or anything from the motors. X, Y and Z flash with ? and 0.

I have also tuned all the stepper drivers to around .550v. The Y axis should be higher and will adjust it later if needed.

Also, the end stops when plugged in from the kit shut off the printer when activated. I rewired one and activated it, but it does nothing now. Meaning the X motor moved both ways while being pressed.

This is my first 3D printer.

csorrows 2019-11-05 15:28:59 UTC #2

Home it first. Endstops are also plugged in backward.

zebenak 2019-11-07 17:57:56 UTC #3

Still no movement in Y, Z or extruder after homing X.

csorrows 2019-11-12 03:20:19 UTC #4

The axis wont move until that axis is homed. Just homing X won't fix it.

Also extruder wont move until hotend is up to temp.

carefudundae 2019-11-13 18:18:20 UTC #5

start with an endstop check, no point in moving motors until you are sure the endstops work properly... the manual I believe has detailed info on connecting to pronterface and sending the proper command (M119 I think) to check their status, then click the endstop switch (hold it down) and send another M119 command to make sure it changed. get all of those wired correct and working before messing with motors otherwise you risk damaging something.
@csorrows is right though, you won't be able to move the motors before homing that axis first (there are some gcode command overrides, but not recommended and not necessary)

zebenak 2019-11-14 15:21:57 UTC #6

All end stops are working properly, switching when pressed using m119 before and after, but still no movement in Y, Z or extruder (after waiting for it to heat up). I did have to rewire two of the end stops, but that was accomplished before the original post of this thread.

carefudundae 2019-11-14 17:29:03 UTC #7

ok, so if you send a home command, G28, it only homes X then stops?

Tin_Falcon 2019-11-18 00:18:05 UTC #8

Have you tried replacing the stepper drivers the A 498s have failed before and I have seen out of box failure .
they are cheap enough to purchase for troubleshooting

zebenak 2019-11-24 01:00:21 UTC #9

Correct. Only x moves bumps stop, moves out then back.

zebenak 2019-11-24 01:01:33 UTC #10

I used all the stepper drives in the x and they all worked.

Tin_Falcon 2019-11-24 18:59:12 UTC #11

Double triple check the jumper configuration on the skr board. . there are lots of jumpers on that board for different configurations.
Some folks recommending pulling all the jumpers off then adding the one you actually need.