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| author | Justin Schuh <code@justinschuh.com> | 2019-11-24 18:37:30 -0500 |
|---|---|---|
| committer | KevinOConnor <kevin@koconnor.net> | 2019-11-24 18:37:30 -0500 |
| commit | 93f1e6dd86bf6168f2bae163213143063242391e (patch) | |
| tree | 091d2f15bc44de0a0fb693cbcf161ce9c119a7e4 | |
| parent | 05472bb8a311e6971877b7ecbb57e0bfd7087469 (diff) | |
| download | kutter-93f1e6dd86bf6168f2bae163213143063242391e.tar.gz kutter-93f1e6dd86bf6168f2bae163213143063242391e.tar.xz kutter-93f1e6dd86bf6168f2bae163213143063242391e.zip | |
FAN: Kick start fan when the increase is more than 50% (#2085)
Large increases in fan speed can suffer from acceleration lag, so this
change kick starts the fan for a change of 50% or more in the same way
that starting the fan from 0% does.
Signed-off-by: Justin Schuh <code@justinschuh.com>
| -rw-r--r-- | config/example.cfg | 5 | ||||
| -rw-r--r-- | klippy/extras/fan.py | 4 |
2 files changed, 5 insertions, 4 deletions
diff --git a/config/example.cfg b/config/example.cfg index fa293abc..5b9b3264 100644 --- a/config/example.cfg +++ b/config/example.cfg @@ -253,8 +253,9 @@ pin: ar9 # constrained by the implementation and may be significantly # different than the requested cycle_time. The default is False. #kick_start_time: 0.100 -# Time (in seconds) to run the fan at full speed when first enabling -# it (helps get the fan spinning). The default is 0.100 seconds. +# 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. #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 diff --git a/klippy/extras/fan.py b/klippy/extras/fan.py index 0b5aac92..571d7052 100644 --- a/klippy/extras/fan.py +++ b/klippy/extras/fan.py @@ -42,8 +42,8 @@ class PrinterFan: if value == self.last_fan_value: return print_time = max(self.last_fan_time + FAN_MIN_TIME, print_time) - if (value and value < self.max_power - and not self.last_fan_value and self.kick_start_time): + if (value and value < self.max_power and self.kick_start_time + and (not self.last_fan_value or value - self.last_fan_value > .5)): # Run fan at full speed for specified kick_start_time self.mcu_fan.set_pwm(print_time, self.max_power) print_time += self.kick_start_time |