I'm struggling a bit setting up the software for my first RepRap here. Im on RAMPS 1.4 ontop of an Arduino MEGA using Sprinter firmware at the momemt (tried Marlin but gives me same problems). The problem I'm having is that the axis move waay too far. It seems that it is set to take too many steps pr mm. If i take the _AXIS_STEP_PER_UNIT down to around 10, it moves the correct distance, although quiet noisy. I also have to set the acceleration quiet low compared to default settings, otherwise the motors just vibrates.
Does anyone have any ideas what is going on here? I have been thinking that 1/16 microstepping might not be enabled, but I cant think of anyway to test that - and I have checked that the jumpers are connected, so unless I can put those on wrong, the motors should microstep. This really has me puzzled, I cant spot the error
Here is my firmware settings related to motors, movement and acceleration:
With the low steps/mm, I can get the motors to run smoothly around 5k feed rate, but at 500-ish which is a typical movement speed for printing, it seems that i get a lot of vibration. It seems though that i can fix this by turning down the current to the motors almost entirely on the Stepper Drivers.
Edited 1 time(s). Last edit at 05/03/2013 10:47AM by JesperG.