# Shake&Tune: 3D printer analysis tools # # Copyright (C) 2024 Félix Boisselier (Frix_x on Discord) # Licensed under the GNU General Public License v3.0 (GPL-3.0) # # File: axes_map_calibration.py # Description: Provides a command for calibrating the axes map of a 3D printer using an accelerometer. # The script moves the printer head along specified axes, starts and stops measurements, # and performs post-processing to analyze the collected data. from ..helpers.console_output import ConsoleOutput from ..shaketune_process import ShakeTuneProcess from .accelerometer import Accelerometer SEGMENT_LENGTH = 30 # mm def axes_map_calibration(gcmd, config, st_process: ShakeTuneProcess) -> None: z_height = gcmd.get_float('Z_HEIGHT', default=20.0) speed = gcmd.get_float('SPEED', default=80.0, minval=20.0) accel = gcmd.get_int('ACCEL', default=1500, minval=100) feedrate_travel = gcmd.get_float('TRAVEL_SPEED', default=120.0, minval=20.0) printer = config.get_printer() gcode = printer.lookup_object('gcode') toolhead = printer.lookup_object('toolhead') systime = printer.get_reactor().monotonic() accel_chip = Accelerometer.find_axis_accelerometer(printer, 'xy') k_accelerometer = printer.lookup_object(accel_chip, None) if k_accelerometer is None: raise gcmd.error('Multi-accelerometer configurations are not supported for this macro!') pconfig = printer.lookup_object('configfile') current_axes_map = pconfig.status_raw_config[accel_chip].get('axes_map', None) if current_axes_map is not None and current_axes_map.strip().replace(' ', '') != 'x,y,z': raise gcmd.error( f'The parameter axes_map is already set in your {accel_chip} configuration! Please remove it (or set it to "x,y,z")!' ) accelerometer = Accelerometer(k_accelerometer) toolhead_info = toolhead.get_status(systime) old_accel = toolhead_info['max_accel'] old_mcr = toolhead_info['minimum_cruise_ratio'] old_sqv = toolhead_info['square_corner_velocity'] # set the wanted acceleration values gcode.run_script_from_command(f'SET_VELOCITY_LIMIT ACCEL={accel} MINIMUM_CRUISE_RATIO=0 SQUARE_CORNER_VELOCITY=5.0') # Deactivate input shaper if it is active to get raw movements input_shaper = printer.lookup_object('input_shaper', None) if input_shaper is not None: input_shaper.disable_shaping() else: input_shaper = None kin_info = toolhead.kin.get_status(systime) mid_x = (kin_info['axis_minimum'].x + kin_info['axis_maximum'].x) / 2 mid_y = (kin_info['axis_minimum'].y + kin_info['axis_maximum'].y) / 2 _, _, _, E = toolhead.get_position() # Going to the start position toolhead.move([mid_x - SEGMENT_LENGTH / 2, mid_y - SEGMENT_LENGTH / 2, z_height, E], feedrate_travel) toolhead.dwell(0.5) # Start the measurements and do the movements (+X, +Y and then +Z) accelerometer.start_measurement() toolhead.dwell(0.5) toolhead.move([mid_x + SEGMENT_LENGTH / 2, mid_y - SEGMENT_LENGTH / 2, z_height, E], speed) toolhead.dwell(0.5) accelerometer.stop_measurement('axesmap_X', append_time=True) toolhead.dwell(0.5) accelerometer.start_measurement() toolhead.dwell(0.5) toolhead.move([mid_x + SEGMENT_LENGTH / 2, mid_y + SEGMENT_LENGTH / 2, z_height, E], speed) toolhead.dwell(0.5) accelerometer.stop_measurement('axesmap_Y', append_time=True) toolhead.dwell(0.5) accelerometer.start_measurement() toolhead.dwell(0.5) toolhead.move([mid_x + SEGMENT_LENGTH / 2, mid_y + SEGMENT_LENGTH / 2, z_height + SEGMENT_LENGTH, E], speed) toolhead.dwell(0.5) accelerometer.stop_measurement('axesmap_Z', append_time=True) accelerometer.wait_for_file_writes() # Re-enable the input shaper if it was active if input_shaper is not None: input_shaper.enable_shaping() # Restore the previous acceleration values gcode.run_script_from_command( f'SET_VELOCITY_LIMIT ACCEL={old_accel} MINIMUM_CRUISE_RATIO={old_mcr} SQUARE_CORNER_VELOCITY={old_sqv}' ) toolhead.wait_moves() # Run post-processing ConsoleOutput.print('Analysis of the movements...') ConsoleOutput.print('This may take some time (1-3min)') creator = st_process.get_graph_creator() creator.configure(accel, SEGMENT_LENGTH) st_process.run() st_process.wait_for_completion()