I’m testing my new mpcnc with a generic chinese 5.5W (at least sold as 5.5W).
Did you buy everything from here? => NO
a)If you didn’t or changed some things please don’t leave out any details. => No changes. Steppers are in serial connection.
b)What firmware? => Marlin 1.1.0RC7 downloaded from here.
Are you using end stops? => NO
a)If so please disconnect them.
Are you using all my recommended parts? => Yes
a) If not please list what parts you used.
Include a picture so obvious errors might be spotted. => See attachs
My laser is connected to PWM D9, it responds ok to intensity changes (M106 Sxxx).
A quick test with inkscape j tech photonics (https://jtechphotonics.com/?page_id=2012) looks great.
Then I try image2gcode mpcnc edition (downloaded from https://www.v1engineering.com/forum/topic/image2gcode-free-raster-image-laser-engraving-software-modified-for-mpcnc/page/6/#post-15455) and I have results as attached. This picture is with PWM max to 63, speed 1200 mm/min, 0.18 mm dot size, no acceleration changes from the default vicius firmware over mdf.
There is some kind of pattern, every 14/15 lines, is like the laser engrave out of the place for some time.
Should it be a mechanical issue? Stepper driver issue (DRV8825 at 0.7v, my motors are 1.5A rated)? Laser driver issue?
The x movements seems a bit bumpy/jerky…