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toolhead: Replace junction_deviation with square_corner_velocity

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The junction_deviation configuration parameter has a number of quirks
that make it difficult to configure.  Replace it with a
"square_corner_velocity" configuration parameter.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-07-08 14:08:21 -04:00
parent ca505bf4ac
commit 0025fbf10d
5 changed files with 34 additions and 21 deletions
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15
config/example.cfg
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@ -296,11 +296,16 @@ max_z_accel: 30
#motor_off_time: 600
# Time (in seconds) of idle time before the printer will try to
# disable active motors. The default is 600 seconds.
#junction_deviation: 0.02
# Distance (in mm) used to control the internal approximated
# centripetal velocity cornering algorithm. A larger number will
# permit higher "cornering speeds" at the junction of two moves. The
# default is 0.02mm.
#square_corner_velocity: 5.0
# The maximum velocity (in mm/s) that the toolhead may travel a 90
# degree corner at. A non-zero value can reduce changes in extruder
# flow rates by enabling instantaneous velocity changes of the
# toolhead during cornering. This value configures the internal
# centripetal velocity cornering algorithm; corners with angles
# larger than 90 degrees will have a higher cornering velocity while
# corners with angles less than 90 degrees will have a lower
# cornering velocity. If this is set to zero then the toolhead will
# decelerate to zero at each corner. The default is 5mm/s.
# Looking for more options? Check the example-extras.cfg file.