How to enable the distortion map from repetier host

Comments

• Repetier

  April 2020

  Distortion is enabled automatically after G33 or using
  M323 S0/S1 enable disable distortion correction P0 = not permanent, P1 = permanent = default
  
  Your problem as you see is the G33 has z probe triggered before going down first time. So start height seems to be too low. I think it moves down to define z probe bed distance which is set too low in your case.
• winch20010

  April 2020

  But if i understand, Bed height map in repetier host is only informal and has no effect on G33?
  if i run a G33, it uses the xmin,xmax’ymin and ymax set in the firmware right ? 

  Or it is able to use xmin’xmax’ymin and ymax set in bed height map in repetier host ?
  the point is : as this distortion map is useful for pcb mill on my side, i would like to run it each time before milling a pcb. But i would like also to be able to stick my pcb anywhere on may cnc bed and the pcb card size can differ from time to time... i know, this is not straightforward but this is more easy for me
  thanks again
• winch20010

  April 2020

  M323 also can enable distortion but only G33 set the matrix before right ? Still no relationship with bed height map tool in repetier host ?
• winch20010

  April 2020

  still trying to use repetier for pcb milling, but really lost now
  
  if I run a g33 x42.00 y200.00 z0.08 for example, then matrix is updated to the closest point defined by the firmware, and can not be fully customized   
  if I do a g33 l0, I get : 
  >>
  12:51:42.854: G33 X55.00 Y190.00 Z0.080
  <<
  
  so I understand the matrix generated by the firmware for distortion is overriding everything... 
  after runnin a g33 r0, I run g33 l0, and still see the matrix, but with Z corrections equals to 0.00 but 25 X&Y  coordinates still present
  
  firmware data : 
  >>
  

  #define DISTORTION_CORRECTION 1

  #define DISTORTION_CORRECTION_POINTS 5

  #define DISTORTION_LIMIT_TO 2

  #define DISTORTION_CORRECTION_R 100

  #define DISTORTION_PERMANENT 0

  #define DISTORTION_UPDATE_FREQUENCY 15

  #define DISTORTION_START_DEGRADE 0.5

  #define DISTORTION_END_HEIGHT 2

  #define DISTORTION_EXTRAPOLATE_CORNERS 0

  #define DISTORTION_XMIN 10

  #define DISTORTION_YMIN 10

  #define DISTORTION_XMAX 190

  #define DISTORTION_YMAX 190

  <<
  
  unfortunately, it seems it's impossible to create a live distortion map based on the stock you want to mill.
  
  
• Repetier

  April 2020

  There is no real relation to host and firmware distortion map.And since firmware position is hardcoded it is not that flexible you might need it for pcb. Also the coordinates G33 L0 returns are always the same fitting the hardcoded area and grid size. It was never made for the workflow you want to use it for.
  
  You can set it manually and then enable it with M323 so no real need to measure with G33 but then you still need to measure the points below pcb and adjust map with manual sending correction. So possible but not easy that way.
• winch20010

  April 2020

  Ok, i understand so yes... need to work on a way to create manual correction. 

  For information, i found a nice tool who can do it (autoleveller  and also pcb2gcode). but apparently not compatible with repetier  by default as it sends not recognized  commands but there an opensource version and maybe some solutions to adapt it with repetier. I will check. 

  Thanks anyhow as usual for always being active and helping us