At the moment i am trying to build my own delta printer.

I use Repetier Host and Firmware, and today i wanted to du my first dry run test.
So i hooked up my RAMPS board to my stepper motors an hit the home button.
The result you see in the video

extreme strange sound and very slow movement :/ something like 10cm/minute
i will make a video asap

further info:
1/16 microstepping
RAMPS board
all motors are effected
Latest Repetier Firmware, nothin else connected at the moment, just 3 x/y/z-Motors, Power Supply and USB

Edited 1 time(s). Last edit at 06/07/2014 12:26PM by mantus.

[reprap.org]

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Generation 7 Electronics	Teacup Firmware	RepRap DIY

i have already gone through this list, but it is none of this issues.

It moves, but it moves extremely slow.
Meanwhile i tried Marlin FW, and there the motors move as expected.
Any idea what i could have done wrong with repetier?

Steps per mm calibrated in Repetier?
I don't know deltas, or even if they have steps per mm, but that sounds like a common problem with those who switch to Repetier. I don't know what it is about the mentality of new Repetier users but it doesn't seem all too uncommon to put in the wrong steps per mm.

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Realizer- One who realizes dreams by making them a reality either by possibility or by completion. Also creating or renewing hopes of dreams.
"keep in mind, even the best printer can not print with the best filament if the user is the problem." -Ohmarinus

Hi,

Repetier FW:
#define XAXIS_STEPS_PER_MM 80
#define YAXIS_STEPS_PER_MM 80
#define ZAXIS_STEPS_PER_MM 80
calculated from [calculator.josefprusa.cz] 16Teeth T2.5 1,8° stepper set to 1/16 steps
afaik this should be fine for my setup.

btw Marlin with the same steps per mm moves the steppers as expected :/ strange

maybe something is wrong with
#define HOMING_FEEDRATE_X 40
#define HOMING_FEEDRATE_Y 40
#define HOMING_FEEDRATE_Z 2
?
2 seems strange to me, but this was default from the repetier wizard :/, but changing HOMING_FEEDRATE_Z also to 40 changes nothing :/

Changeing the values via gcode, solved the problem, now the movement is like i should be, but i gone through the config wizzard from repetier now multible times, an i cant find any error, may this be a bug in the wizard?
The Only problem that remaines is that the movement is still extremely slow after i hit the "Y-10" button in the GUI, but dry run works now.

Edited 3 time(s). Last edit at 06/08/2014 02:47PM by mantus.