min_time setting added in [fan] section

docs/Config_Reference.md

@@ -2661,6 +2661,12 @@ pin:
 #   Time (in seconds) to run the fan at full speed when either first
 #   enabling or increasing it by more than 50% (helps get the fan
 #   spinning). The default is 0.100 seconds.
+#min_time: 0.1
+#	The minimum time in seconds during which the fan will execute the 
+#	previous set speed value and not start executing the next one.
+#	The default is 0.100 seconds.
+#	The value can be changed downwards if the gcode contains a lot of 
+#	fast fan speed changes.
 #off_below: 0.0
 #   The minimum input speed which will power the fan (expressed as a
 #   value from 0.0 to 1.0). When a speed lower than off_below is

klippy/extras/fan.py

@@ -5,8 +5,6 @@
 # This file may be distributed under the terms of the GNU GPLv3 license.
 from . import pulse_counter
 
-FAN_MIN_TIME = 0.100
-
 class Fan:
     def __init__(self, config, default_shutdown_speed=0.):
         self.printer = config.get_printer()
@@ -18,6 +16,7 @@ def __init__(self, config, default_shutdown_speed=0.):
                                                minval=0.)
         self.off_below = config.getfloat('off_below', default=0.,
                                          minval=0., maxval=1.)
+        self.min_time = config.getfloat('min_time', 0.1, above=0.)
         cycle_time = config.getfloat('cycle_time', 0.010, above=0.)
         hardware_pwm = config.getboolean('hardware_pwm', False)
         shutdown_speed = config.getfloat(
@@ -51,7 +50,7 @@ def set_speed(self, print_time, value):
         value = max(0., min(self.max_power, value * self.max_power))
         if value == self.last_fan_value:
             return
-        print_time = max(self.last_fan_time + FAN_MIN_TIME, print_time)
+        print_time = max(self.last_fan_time + self.min_time, print_time)
         if self.enable_pin:
             if value > 0 and self.last_fan_value == 0:
                 self.enable_pin.set_digital(print_time, 1)