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Author Topic: Steppers only move short distance...
elliotcain
Newbie
Posts: 2
Permalink
Post Steppers only move short distance...
on: January 21, 2016, 16:49
Quote

Hello!

I have followed everything that I can read about the firmware and controller, but to no avail, my travel is but a fraction of what it should be... literally!

Everything is set to what, according to everything I have read, it should be. But when I initiate move pen to point, move direct or anything, the gondola only moves about a 1/4 of the distance that it should. I click the bottom of the page and get 60ish mm when it should be 355ish. The same goes for left and right. 10ish when it should be 110ish... LOL

Uno R3
Adafruit MC V2.3
Nema 17 1.8deg/200spr 5.6V@0.67A
Power Supply - 5VDC@5A

Properties File:
# *** Polargraph properties file ***
#Thu Jan 21 11:17:23 EST 2016
controller.pixel.samplearea=10
controller.pictureframe.position.y=380
controller.pictureframe.position.x=380
controller.testPenWidth.startSize=0.5
controller.machine.colour=969696
machine.motors.mmPerRev=95.0
controller.window.width=1039
controller.frame.colour=C80000
controller.image.position.y=355
controller.image.position.x=355
machine.motors.accel=400
controller.image.height=238
controller.machine.serialport=-1
controller.window.height=812
controller.maxSegmentLength=2
machine.penlift.up=175
machine.penlift.down=75
controller.page.position.y=120
controller.vector.scaling=100
controller.page.position.x=167
machine.step.multiplier=1
controller.pictureframe.width=190
controller.grid.size=75.0
controller.testPenWidth.endSize=2
controller.pictureframe.height=190
controller.page.colour=DCDCDC
controller.testPenWidth.incrementSize=0.5
controller.image.width=238

Any help, guidance or a chain saw would be greatly appreciated!

Thank you in advance for your time and efforts.
elliotcain
Newbie
Posts: 2
Permalink
Post Re: Steppers only move short distance...
on: January 21, 2016, 17:11
Quote

Never mind... The village idiot figured it out! LOL

Have a great one!
sandy
Administrator
Posts: 1317
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sandy
Post Re: Steppers only move short distance...
on: January 21, 2016, 17:22
Quote

Hee Hee, happy to be of service 🙂
Alexey
Newbie
Posts: 3
Permalink
Post Re: Steppers only move short distance...
on: May 23, 2016, 17:54
Quote

Quote from sandy on January 21, 2016, 17:22
Hee Hee, happy to be of service 🙂

I have the same problem. Tell me what it was ? How do I fix this problem? Thank you
DaniK
Beginner
Posts: 34
Permalink
DaniK
Post Re: Steppers only move short distance...
on: May 23, 2016, 19:13
Quote

wild guess:
values of "machine.step.multiplier" and "machine.motors.stepsPerRev"
are not correct....

which motor driver (PolargraphSD, Adafruit V1,...?) and what motors do you use?
see also here: http://www.polargraph.co.uk/forum/polargraphs-group2/code-software-forum2/polargraph-firmware-parameters-thread350/
Alexey
Newbie
Posts: 3
Permalink
Post Re: Steppers only move short distance...
on: May 24, 2016, 09:53
Quote

Quote from DaniK on May 23, 2016, 19:13
wild guess:
values of "machine.step.multiplier" and "machine.motors.stepsPerRev"
are not correct....

which motor driver (PolargraphSD, Adafruit V1,...?) and what motors do you use?
see also here: http://www.polargraph.co.uk/forum/polargraphs-group2/code-software-forum2/polargraph-firmware-parameters-thread350/

I use motors nema 17/200 steps of 1.8 degrees . 12volt 1.2 ampere . Engine drivers adafruit V2
# *** Polargraph properties file ***
#Thu May 19 16:34:06 MSK 2016
controller.pixel.samplearea=3
controller.pictureframe.position.y=237
controller.pictureframe.position.x=95
controller.testPenWidth.startSize=0.5
controller.machine.colour=969696
machine.motors.mmPerRev=120
controller.window.width=1534
controller.frame.colour=C80000
controller.image.position.y=190
controller.image.position.x=88
machine.motors.accel=700
controller.image.height=278
controller.machine.serialport=1
controller.window.height=943
controller.maxSegmentLength=2
machine.penlift.up=180
machine.penlift.down=90
controller.page.position.y=120
controller.vector.scaling=100
controller.page.position.x=76
controller.pictureframe.width=259
machine.step.multiplier=1
controller.grid.size=9.0
controller.testPenWidth.endSize=2
controller.pictureframe.height=171
controller.page.colour=DCDCDC
controller.testPenWidth.incrementSize=0.5
controller.image.width=278
machine.motors.stepsPerRev=200.0
machine.pen.size=0.5
controller.page.width=297
controller.pixel.mask.color=00FF00
controller.machine.baudrate=57600
controller.vector.minLineLength=2
machine.width=450
controller.page.height=420
controller.vector.position.y=0
controller.background.colour=646464
controller.image.filename=
controller.vector.position.x=0
controller.homepoint.y=120
controller.guide.colour=FFFFFF
machine.motors.maxSpeed=600
controller.homepoint.x=225
controller.density.preview.style=0
controller.pixel.scaling=0.91
controller.densitypreview.colour=000000
machine.height=1000
DaniK
Beginner
Posts: 34
Permalink
DaniK
Post Re: Steppers only move short distance...
on: May 24, 2016, 11:00
Quote

Hi Alexey...i think changing the value under "machine.step.multiplier=1" to 8 will do the trick.
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