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extruder: Provide more details on extruder errors 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-09-05 21:55:44 -04:00
parent 09e32d1b84
commit 5b62f15c6d
2 changed files with 21 additions and 13 deletions
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7
config/example.cfg
View File

@ -120,9 +120,10 @@ filament_diameter: 3.500
# extruder. This parameter must be provided.
#max_extrude_cross_section:
# Maximum area of the cross section of an extrusion line (in
# mm^2). If a move requests an extrusion rate that would exceed this
# value it will cause an error to be returned. The default is: 4.0 *
# nozzle_diameter^2
# mm^2). This setting prevents excessive amounts of extrusion during
# relatively small XY moves. If a move requests an extrusion rate
# that would exceed this value it will cause an error to be
# returned. The default is: 4.0 * nozzle_diameter^2
#max_extrude_only_distance: 50.0
# Maximum length (in mm of raw filament) that an extrude only move
# may be. If an extrude only move requests a distance greater than

27
klippy/extruder.py
View File

@ -16,11 +16,11 @@ class PrinterExtruder:
self.nozzle_diameter = config.getfloat('nozzle_diameter', above=0.)
filament_diameter = config.getfloat(
'filament_diameter', minval=self.nozzle_diameter)
filament_area = math.pi * (filament_diameter * .5)**2
self.filament_area = math.pi * (filament_diameter * .5)**2
max_cross_section = config.getfloat(
'max_extrude_cross_section', 4. * self.nozzle_diameter**2
, above=0.)
self.max_extrude_ratio = max_cross_section / filament_area
self.max_extrude_ratio = max_cross_section / self.filament_area
toolhead = printer.objects['toolhead']
max_velocity, max_accel = toolhead.get_max_velocity()
self.max_e_velocity = self.config.getfloat(
@ -57,22 +57,29 @@ class PrinterExtruder:
move.extrude_r = move.axes_d[3] / move.move_d
move.extrude_max_corner_v = 0.
if not self.heater.can_extrude:
raise homing.EndstopMoveError(
move.end_pos, "Extrude below minimum temp")
raise homing.EndstopError(
"Extrude below minimum temp\n"
"See the 'min_extrude_temp' config option for details")
if not move.is_kinematic_move or move.extrude_r < 0.:
# Extrude only move (or retraction move) - limit accel and velocity
if abs(move.axes_d[3]) > self.max_e_dist:
raise homing.EndstopMoveError(
move.end_pos, "Extrude move too long")
raise homing.EndstopError(
"Extrude only move too long (%.3fmm vs %.3fmm)\n"
"See the 'max_extrude_only_distance' config"
" option for details" % (move.axes_d[3], self.max_e_dist))
inv_extrude_r = 1. / abs(move.extrude_r)
move.limit_speed(self.max_e_velocity * inv_extrude_r
, self.max_e_accel * inv_extrude_r)
elif (move.extrude_r > self.max_extrude_ratio
and move.axes_d[3] > self.nozzle_diameter*self.max_extrude_ratio):
logging.debug("Overextrude: %s vs %s" % (
move.extrude_r, self.max_extrude_ratio))
raise homing.EndstopMoveError(
move.end_pos, "Move exceeds maximum extrusion cross section")
area = move.axes_d[3] * self.filament_area / move.move_d
logging.debug("Overextrude: %s vs %s (area=%.3f dist=%.3f)",
move.extrude_r, self.max_extrude_ratio,
area, move.move_d)
raise homing.EndstopError(
"Move exceeds maximum extrusion (%.3fmm^2 vs %.3fmm^2)\n"
"See the 'max_extrude_cross_section' config option for details"
% (area, self.max_extrude_ratio * self.filament_area))
def calc_junction(self, prev_move, move):
extrude = move.axes_d[3]
prev_extrude = prev_move.axes_d[3]