From d166d1f69208b0b5a5eb32d6795c2b7a9485ad63 Mon Sep 17 00:00:00 2001 From: Kevin O'Connor Date: Fri, 19 Jan 2018 23:46:01 -0500 Subject: fan: Move fan code to extras directory The print cooling fan and printer heater_fan are independent modules that can reside in the extras directory. Signed-off-by: Kevin O'Connor --- klippy/extras/heater_fan.py | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 klippy/extras/heater_fan.py (limited to 'klippy/extras/heater_fan.py') 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 +# +# 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) -- cgit v1.2.3-70-g09d2