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: retractAmount(float:5) Retraction amount (mm)
   9
  10 __copyright__ = "Copyright (C) 2013 David Braam - Released under terms of the AGPLv3 License"
  11 import re
  12
  13 def getValue(line, key, default = None):
  14         if not key in line or (';' in line and line.find(key) > line.find(';')):
  15                 return default
  16         subPart = line[line.find(key) + 1:]
  17         m = re.search('^[0-9]+\.?[0-9]*', subPart)
  18         if m is None:
  19                 return default
  20         try:
  21                 return float(m.group(0))
  22         except:
  23                 return default
  24
  25 with open(filename, "r") as f:
  26         lines = f.readlines()
  27
  28 z = 0.
  29 x = 0.
  30 y = 0.
  31 pauseState = 0
  32 currentSectionType = 'STARTOFFILE'
  33 with open(filename, "w") as f:
  34         for line in lines:
  35                 if line.startswith(';'):
  36                         if line.startswith(';TYPE:'):
  37                                 currentSectionType = line[6:].strip()
  38                         f.write(line)
  39                         continue
  40                 if getValue(line, 'G', None) == 1 or getValue(line, 'G', None) == 0:
  41                         newZ = getValue(line, 'Z', z)
  42                         x = getValue(line, 'X', x)
  43                         y = getValue(line, 'Y', y)
  44                         if newZ != z and currentSectionType != 'CUSTOM':
  45                                 z = newZ
  46                                 if z < pauseLevel and pauseState == 0:
  47                                         pauseState = 1
  48                                 if z >= pauseLevel and pauseState == 1:
  49                                         pauseState = 2
  50                                         f.write(";TYPE:CUSTOM\n")
  51                                         #Retract
  52                                         f.write("M83\n")
  53                                         f.write("G1 E-%f F6000\n" % (retractAmount))
  54                                         #Move the head away
  55                                         f.write("G1 X%f Y%f F9000\n" % (parkX, parkY))
  56                                         if z < 15:
  57                                                 f.write("G1 Z15 F300\n")
  58                                         #Wait till the user continues printing
  59                                         f.write("M0\n")
  60                                         #Push the filament back, and retract again, the properly primes the nozzle when changing filament.
  61                                         f.write("G1 E%f F6000\n" % (retractAmount))
  62                                         f.write("G1 E-%f F6000\n" % (retractAmount))
  63                                         #Move the head back
  64                                         if z < 15:
  65                                                 f.write("G1 Z%f F300\n" % (z+1))
  66                                         f.write("G1 X%f Y%f F9000\n" % (x, y))
  67                                         f.write("G1 E%f F6000\n" % (retractAmount))
  68                                         f.write("G1 F9000\n")
  69                                         f.write("M82\n")
  70                 f.write(line)