plugins/pauseAtZ.py

   1 #Name: Pause at height
   2 #Info: Pause the printer at a certain height
   3 #Depend: GCode
   4 #Type: postprocess
   5 #Param: pauseLevel(float:5.0) Pause height (mm)
   6 #Param: parkX(float:190) Head park X (mm)
   7 #Param: parkY(float:190) Head park Y (mm)
   8 #Param: moveZ(float:0) Head move Z (mm)
   9 #Param: retractAmount(float:5) Retraction amount (mm)
  10
  11 __copyright__ = "Copyright (C) 2013 David Braam - Released under terms of the AGPLv3 License"
  12 import re
  13 from Cura.util import profile
  14
  15 def getValue(line, key, default = None):
  16         if not key in line or (';' in line and line.find(key) > line.find(';')):
  17                 return default
  18         subPart = line[line.find(key) + 1:]
  19         m = re.search('^[0-9]+\.?[0-9]*', subPart)
  20         if m is None:
  21                 return default
  22         try:
  23                 return float(m.group(0))
  24         except:
  25                 return default
  26
  27 with open(filename, "r") as f:
  28         lines = f.readlines()
  29
  30 z = 0.
  31 x = 0.
  32 y = 0.
  33 pauseState = 0
  34 currentSectionType = 'STARTOFFILE'
  35 with open(filename, "w") as f:
  36         for line in lines:
  37                 if line.startswith(';'):
  38                         if line.startswith(';TYPE:'):
  39                                 currentSectionType = line[6:].strip()
  40                         f.write(line)
  41                         continue
  42                 if getValue(line, 'G', None) == 1 or getValue(line, 'G', None) == 0:
  43                         newZ = getValue(line, 'Z', z)
  44                         x = getValue(line, 'X', x)
  45                         y = getValue(line, 'Y', y)
  46                         if newZ != z and currentSectionType != 'CUSTOM':
  47                                 z = newZ
  48                                 if z < pauseLevel and (pauseState == 0 or pauseState == 2): #pauseState going from 2 to 1 mean we can support print one at a time mode.
  49                                         pauseState = 1
  50                                 if z >= pauseLevel and pauseState == 1:
  51                                         pauseState = 2
  52                                         f.write(";TYPE:CUSTOM\n")
  53                                         #Retract
  54                                         f.write("M83\n")
  55                                         f.write("G1 E-%f F6000\n" % (retractAmount))
  56
  57                                         zChanged = False
  58                                         #Change z before doing the move because the nozzle can hit the glass lock on the UM2
  59                                         if z + moveZ < 15:
  60                                                 zChanged = True
  61                                                 f.write("G1 Z15 F300\n")
  62
  63                                         elif moveZ > 0:
  64                                                 newZ = z + moveZ
  65                                                 maxZ = profile.getMachineSettingFloat('machine_height') - 10 #For Safety Leave a 10mm space (endstop)
  66                                                 if maxZ < newZ:
  67                                                         newZ = maxZ
  68
  69                                                 if newZ > z:
  70                                                         zChanged = True
  71                                                         f.write("G1 Z%f F300\n" % (newZ))
  72
  73                                         #Move the head away
  74                                         f.write("G1 X%f Y%f F9000\n" % (parkX, parkY))
  75
  76                                         #Disable the E steppers
  77                                         f.write("M84 E0\n")
  78                                         #Wait till the user continues printing
  79                                         f.write("M0\n")
  80                                         #Push the filament back, and retract again, the properly primes the nozzle when changing filament.
  81                                         f.write("G1 E%f F6000\n" % (retractAmount))
  82                                         f.write("G1 E-%f F6000\n" % (retractAmount))
  83
  84                                         #Move the head back. Move Z at the same time to prevent hitting the glass locks on the UM2
  85                                         if zChanged :
  86                                                 f.write("G1 X%f Y%f Z%f F9000\n" % (x, y, z+1))
  87                                         else:
  88                                                 f.write("G1 X%f Y%f F9000\n" % (x, y))
  89
  90                                         f.write("G1 E%f F6000\n" % (retractAmount))
  91                                         f.write("G1 F9000\n")
  92                                         f.write("M82\n")
  93                 f.write(line)