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>
Below off_below the fan will be turned off. When configured correctly this
can prevent stalling, which may lead to overheating and failed fans. To
simplify calibration and use of this setting, off_below is applied in the
input duty cycle domain, prior to any scaling due to e.g. max_power.
Signed-off-by: Nicholas Seckar <nseckar@gmail.com>
Instead of directly turning off motors, heaters, and fans from
gcode.py, raise a new event and allow the heater, fan, and toolhead to
handle the event as needed.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add a set_shutdown_speed() method so that the heater_fan code does not
need to peek into the fan object's internal members.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
If the fan's max power is limited by the config, then scale speed
requests between 0 and max_power. This makes more sense for typical
g-code fan speeds.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Most callers did a lookup of the pins module via
printer.lookup_object("pins"). Use that as the standard method and
remove these less frequently used methods.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add support for displaying basic status information on ST7920 and
HD44780 based LCDs that are attached directly to a micro-controller.
Signed-off-by: Marcio Teixeira <marcio@alephobjects.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Use both load_config() and load_config_prefix() functions when
dynamically loading a module from the extras directory - if the config
section name has parameters in it then use load_config_prefix().
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Specify hardware pwm cycle times using the same method as software pwm
(in seconds, not clock ticks). Allow the fan code to be configured
with an explicit cycle time even when using software pwm.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
The print cooling fan and printer heater_fan are independent modules
that can reside in the extras directory.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Justin Schuh