From 9faa0fbd25b948fc5fd7144a68ad03803d61784e Mon Sep 17 00:00:00 2001 From: Kevin O'Connor Date: Fri, 30 Sep 2016 19:04:24 -0400 Subject: extruder: Support a minimum extrude temperature Allow the config file to specify the minimum temperature for the extruder and check for that temperature prior to moving the extruder motor. Signed-off-by: Kevin O'Connor --- klippy/heater.py | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'klippy/heater.py') diff --git a/klippy/heater.py b/klippy/heater.py index c66b251e..3797b917 100644 --- a/klippy/heater.py +++ b/klippy/heater.py @@ -28,6 +28,8 @@ class PrinterHeater: self.mcu_pwm = self.mcu_adc = None self.thermistor_c = Thermistors.get(config.get('thermistor_type')) self.pullup_r = config.getfloat('pullup_resistor', 4700.) + self.min_extrude_temp = config.getfloat('min_extrude_temp', 170.) + self.can_extrude = False self.lock = threading.Lock() self.last_temp = 0. self.last_temp_time = 0. @@ -49,6 +51,8 @@ class PrinterHeater: control_algo = self.config.get('control', 'watermark') algos = {'watermark': ControlBangBang, 'pid': ControlPID} self.control = algos[control_algo](self, self.config) + if self.printer.mcu.output_file_mode: + self.can_extrude = True def run(self): self.mcu_adc.query_analog_in(REPORT_TIME) def set_pwm(self, read_time, value): @@ -87,12 +91,16 @@ class PrinterHeater: with self.lock: self.last_temp = temp self.last_temp_time = read_time + self.can_extrude = (self.last_temp >= self.min_extrude_temp + and self.target_temp >= self.min_extrude_temp) self.control.adc_callback(read_time, temp) #logging.debug("temp: %.3f %f = %f" % (read_time, read_value, temp)) # External commands def set_temp(self, print_time, degrees): with self.lock: self.target_temp = degrees + if self.target_temp < self.min_extrude_temp: + self.can_extrude = False def get_temp(self): with self.lock: return self.last_temp, self.target_temp -- cgit v1.2.3-70-g09d2