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>
If the mcu supports command restarts and it does not appear to use a
real serial port, then default the restart method to 'command'. This
is a better default on boards with native USB support.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Added the pwm_cycle_time option for heater config sections. Defaults
to previous value of 0.100 seconds, but may be reduced to shorter times
at the expense of MCU workload and possible MOSFET heating, depending on
controller design. Some printers that need bed PID to be enabled,
notably the Felixprinters series, are known to benefit from shorter
cycle times, as the default 10hz rate results in excessive voltage
supply droop.
While this option can be used on extruder heaters as well, there
is not expected to be any particular benefit from doing so unless
the extruder heater presents a particularly large load.
Signed-off-by: Andy Silverman <andrewsi@outlook.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add a new config option 'homing_endstop_align_zero' to enable the
alignment of the endstop to a stepper full step. It's possible one
may wish to specify a homing_endstop_phase while not aligning the
endstop.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
It should no longer be necessary to configure "custom" commands during
mcu setup. The ad5206 and static_digital_output config sections
should provide similar functionality.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Allow digital and PWM output pins to be setup via new config
sections. This makes it easier to setup pin configurations.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Extend the FIRMWARE_RESTART command so that it can use the firmware
"reset" command instead of the "arduino" mechanism.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Increase the default motor_off_time from 1 minute to 10 minutes. The
small value is a common source of confusion.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Change the example files for cartesian printers to have a 25mm/s
maximum Z velocity. It's common to use lead screws for the Z axis on
cartesians and it is unlikely one would want to drive them at 250mm/s.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Rename the thermistor_type and thermistor_pin config variables to
sensor_type and sensor_pin. This is in preparation for support of
sensors beyond thermistors.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Not all hardware has PWM support and there is no compelling reason to
use hardware PWM for fans. Change the default to use software PWM.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Change the mcu PWM value from an integer (0-255) to a float (0. - 1.).
Add support for limiting the maximum power (as measured over a
sufficiently long duration) to a particular heater.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Instead of defaulting the pressure advance lookahead time to be the
same as the pressure_advance variable, allow it to be configured.
Default the new config setting (pressure_advance_lookahead_time) to
10ms.
Also, make the setting more accurate if a future move is accelerating
in the middle of the lookahead window.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Update the lookahead code to track both normal toolhead acceleration
as well as a pseudo acceleration to the point of deceleration. This
reduces the top speed of small zig-zag moves and it reduces printer
vibration during these moves.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Instead of requiring the user enter velocity and accel parameters for
extrude only moves, calculate sane defaults from the printer's maximum
velocity and accel.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Be more clear on which parameters have defaults and which parameters
must be specified in the config.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Change the config file so the maximum accel and velocity are specified
in the "printer" section instead of the individual "stepper" sections.
The underlying code limits the velocity and accel of the toolhead
relative to the print object, so it makes sense to configure the
system that was as well.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Invert the default meaning of the stepper direction pin. Instead of
treating a low value as position motion, treat a high value as
positive motion. This matches what other firmwares do, and it matches
what common stepper motor drivers document.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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 <kevin@koconnor.net>
Add support for enhancing the precision of endstop switches by also
inspecting the phase of the stepper motor when the endstop triggers.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add a config option to define an amount of additional filament to feed
into the extruder during acceleration and deceleration of the
extruder. This can help ensure plastic is deposited in the correct
places during a print.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Create a new python file (extruder.py) to control the extruder heater
and stepper motors. This separates the extruder control logic from
the cartesian robot code - making it easier to customize both the
kinematic control of the robot as well as the extruder.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor
Andy Silverman