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Diffstat (limited to 'klippy/extras/heater_fan.py')
| -rw-r--r-- | klippy/extras/heater_fan.py | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/klippy/extras/heater_fan.py b/klippy/extras/heater_fan.py new file mode 100644 index 00000000..2b5ff904 --- /dev/null +++ b/klippy/extras/heater_fan.py @@ -0,0 +1,37 @@ +# Support fans that are enabled when a heater is on +# +# Copyright (C) 2016-2018 Kevin O'Connor <kevin@koconnor.net> +# +# This file may be distributed under the terms of the GNU GPLv3 license. +import fan, extruder + +PIN_MIN_TIME = 0.100 + +class PrinterHeaterFan: + def __init__(self, config): + self.printer = config.get_printer() + self.heater_name = config.get("heater", "extruder0") + self.heater_temp = config.getfloat("heater_temp", 50.0) + self.fan = fan.PrinterFan(config) + self.mcu = self.fan.mcu_fan.get_mcu() + max_power = self.fan.max_power + self.fan_speed = config.getfloat( + "fan_speed", max_power, minval=0., maxval=max_power) + self.fan.mcu_fan.setup_start_value(0., max_power) + def printer_state(self, state): + if state == 'ready': + self.heater = extruder.get_printer_heater( + self.printer, self.heater_name) + reactor = self.printer.get_reactor() + reactor.register_timer(self.callback, reactor.NOW) + def callback(self, eventtime): + current_temp, target_temp = self.heater.get_temp(eventtime) + power = 0. + if target_temp or current_temp > self.heater_temp: + power = self.fan_speed + print_time = self.mcu.estimated_print_time(eventtime) + PIN_MIN_TIME + self.fan.set_speed(print_time, power) + return eventtime + 1. + +def load_config(config): + return PrinterHeaterFan(config) |