Now working to get the machine to react to software correctly. For reference, I’m using Gradus M1 Pro and bCNC driven by rPI.
Trying to home the Z goes down as expected, contacts the limit switch and doesn’t move back it continues to go down. If I manually jog it up and down and the only direction it goes is down.
X stepper won’t move the carriage, just studders. Removed stepper and it moves but very herky-jerky. Swapped with another stepper and it does the same thing. Loosened up the wheels to ensure they weren’t too tight but no change. Can manually rotate the AMCE by hand without any issues.
Y-axis moves just like you would expect. Any thoughts about the z and x?
For jerky motor, make sure that all 4 motor wires have proper connections and not loosen wire(s).
From your description it looks that limit switch does not react on the hit action. Is the limit switch homing action enabled in the controller config? Most likely homing and limit actions have to be set separately.
I recommend that you make first machine move tests with motors not connected to any axis screw, just running in the air and hit limit switches by hand. This way the chance to damage or destroy anything is minimal.
@Donald_Brunswick when you home the Z axis should move up and contact the limit switch. Move down 2mm move back up slowly, contact and then move back down 2mm.
Sounds as though your saying it moves down to contact the limit switch, indicating the plate is installed upside down.
X and Y will not move properly till homing is complete.
If the motor studders the wires are not correctly installed.
Concerning settings, the board is preprogrammed with all values.
@Brandon_Satterfield you are absolutely correct, thanks. Z-axis must go up during homing cycle, otherwise you go deep into machine bed. Reading fast I missed that in Donald’s description.
I don’t use R7 yet, as it’s not easy to get parts in the EU, I think. But so far I heard only positive feedback about that machine and there is always room for R7 waiting in my shop… one day
@Brandon_Satterfield Brandon, now that I’m thinking about this if I put the limit switch on the bottom of the plate the stepper is still going to turn the same direction? if so then the motor will be going down, still? Just swapping the limit switch won’t change the direction of the stepper. Cause I was just going to drill and tap new holes in the bottom of the plate for the switch.
@Donald_Brunswick your plate seems to be installed upside down, as Brandon mentioned. Rotate it by 180 degrees, so the limit switch will be on the top of the plate, and not the bottom.
Whoa, the limit switch for z axis should be on the bottom of the plate. This way as the column rises it will contact the bearing block of the z axis and trigger.
If it is not triggering, you may need to place a capacitor jumping between the switch leads where it feeds into the M1. I have a 100 uF cap between all of my switches.
