--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/printrun-src/calibrateextruder.py Fri Jun 03 09:16:07 2016 +0200
@@ -0,0 +1,168 @@
+#!/usr/bin/env python
+# This file is part of the Printrun suite.
+#
+# Printrun is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Printrun is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Printrun. If not, see <http://www.gnu.org/licenses/>.
+
+# Interactive RepRap e axis calibration program
+# (C) Nathan Zadoks 2011
+
+s = 300 # Extrusion speed (mm/min)
+n = 100 # Default length to extrude
+m = 0 # User-entered measured extrusion length
+k = 300 # Default amount of steps per mm
+port = '/dev/ttyUSB0' # Default serial port to connect to printer
+temp = 210 # Default extrusion temperature
+
+tempmax = 250 # Maximum extrusion temperature
+
+t = int(n * 60) / s # Time to wait for extrusion
+
+try:
+ from printdummy import printcore
+except ImportError:
+ from printcore import printcore
+
+import time
+import getopt
+import sys
+import os
+
+def float_input(prompt=''):
+ f = None
+ while f is None:
+ s = raw_input(prompt)
+ try:
+ f = float(s)
+ except ValueError:
+ sys.stderr.write("Not a valid floating-point number.\n")
+ sys.stderr.flush()
+ return f
+def wait(t, m=''):
+ sys.stdout.write(m + '[' + (' ' * t) + ']\r' + m + '[')
+ sys.stdout.flush()
+ for i in range(t):
+ for s in ['|\b', '/\b', '-\b', '\\\b', '|']:
+ sys.stdout.write(s)
+ sys.stdout.flush()
+ time.sleep(1.0 / 5)
+ print
+def w(s):
+ sys.stdout.write(s)
+ sys.stdout.flush()
+
+
+def heatup(p, temp, s = 0):
+ curtemp = gettemp(p)
+ p.send_now('M109 S%03d' % temp)
+ p.temp = 0
+ if not s: w("Heating extruder up..")
+ f = False
+ while curtemp <= (temp - 1):
+ p.send_now('M105')
+ time.sleep(0.5)
+ if not f:
+ time.sleep(1.5)
+ f = True
+ curtemp = gettemp(p)
+ if curtemp: w(u"\rHeating extruder up.. %3d \xb0C" % curtemp)
+ if s: print
+ else: print "\nReady."
+
+def gettemp(p):
+ try: p.logl
+ except: setattr(p, 'logl', 0)
+ try: p.temp
+ except: setattr(p, 'temp', 0)
+ for n in range(p.logl, len(p.log)):
+ line = p.log[n]
+ if 'T:' in line:
+ try:
+ setattr(p, 'temp', int(line.split('T:')[1].split()[0]))
+ except: print line
+ p.logl = len(p.log)
+ return p.temp
+if not os.path.exists(port):
+ port = 0
+
+# Parse options
+help = u"""
+%s [ -l DISTANCE ] [ -s STEPS ] [ -t TEMP ] [ -p PORT ]
+ -l --length Length of filament to extrude for each calibration step (default: %d mm)
+ -s --steps Initial amount of steps to use (default: %d steps)
+ -t --temp Extrusion temperature in degrees Celsius (default: %d \xb0C, max %d \xb0C)
+ -p --port Serial port the printer is connected to (default: %s)
+ -h --help This cruft.
+"""[1:-1].encode('utf-8') % (sys.argv[0], n, k, temp, tempmax, port if port else 'auto')
+try:
+ opts, args = getopt.getopt(sys.argv[1:], "hl:s:t:p:", ["help", "length=", "steps=", "temp=", "port="])
+except getopt.GetoptError, err:
+ print str(err)
+ print help
+ sys.exit(2)
+for o, a in opts:
+ if o in ('-h', '--help'):
+ print help
+ sys.exit()
+ elif o in ('-l', '--length'):
+ n = float(a)
+ elif o in ('-s', '--steps'):
+ k = int(a)
+ elif o in ('-t', '--temp'):
+ temp = int(a)
+ if temp >= tempmax:
+ print (u'%d \xb0C? Are you insane?'.encode('utf-8') % temp) + (" That's over nine thousand!" if temp > 9000 else '')
+ sys.exit(255)
+ elif o in ('-p', '--port'):
+ port = a
+
+# Show initial parameters
+print "Initial parameters"
+print "Steps per mm: %3d steps" % k
+print "Length extruded: %3d mm" % n
+print
+print "Serial port: %s" % (port if port else 'auto')
+
+p = None
+try:
+ # Connect to printer
+ w("Connecting to printer..")
+ try:
+ p = printcore(port, 115200)
+ except:
+ print 'Error.'
+ raise
+ while not p.online:
+ time.sleep(1)
+ w('.')
+ print " connected."
+
+ heatup(p, temp)
+
+ # Calibration loop
+ while n != m:
+ heatup(p, temp, True)
+ p.send_now("G92 E0") # Reset e axis
+ p.send_now("G1 E%d F%d" % (n, s)) # Extrude length of filament
+ wait(t, 'Extruding.. ')
+ m = float_input("How many millimeters of filament were extruded? ")
+ if m == 0: continue
+ if n != m:
+ k = (n / m) * k
+ p.send_now("M92 E%d" % int(round(k))) # Set new step count
+ print "Steps per mm: %3d steps" % k # Tell user
+ print 'Calibration completed.' # Yay!
+except KeyboardInterrupt:
+ pass
+finally:
+ if p: p.disconnect()