[gcode_macro PRINT_START]
gcode:
    # Parameters
    {% set bedtemp = params.BED|int %}
    {% set hotendtemp = params.HOTEND|int %}
    {% set chambertemp = params.CHAMBER|default(0)|int %}
    
    #   Set safe speeds
    {% set maxVelocity = printer.configfile.settings.printer.max_velocity|default(200)|int %}
    {% set maxVelocityAdjusted =  (0.95 * maxVelocity * 60)|int  %}

    ADJUST_FILAMENT_SENSOR_STATUS ENABLE=1
                                                                         
    G90
    M140 S{bedtemp}                                                              ; set & don't wait for bed temp
    G28 X Y

    M190 S{bedtemp}                                                              ; set & wait for bed temp
    M104 S{hotendtemp}                                                           ; set & don't wait for hotend temp
    G28 Z                                                                        ; final z homing

    G1 X0 Y0 F{maxVelocityAdjusted}
    M109 S{hotendtemp}                                                           ; set & wait for hotend temp

    BED_MESH_PROFILE LOAD=default
    G1 Z20 F3000                   ; move nozzle away from bed