Merge pull request #20 from gennro/main

README.md

@@ -124,6 +124,8 @@ Check the orientation of the hole for the M2.5 screw in the knife holder. It nee
 
 
 ### Add heat inserts
+
+Tip here for the heat set that goes above the cutter I would suggest drilling the threads out with a ~2.5mm drill bit. On the hotend holder side below the cutter make sure you flare out the PTFE tube to help guide the filament.
 #### Main body
 ![image](https://github.com/sorted01/Filametrix/assets/83211473/8324c808-83cd-4b8d-a89a-45ca6b4836d8)
 #### SB cutting Printhead back
@@ -139,41 +141,12 @@ I need some time to finalize assembly instructions. If you have questions you'll
 
 ## Code
 
-**!! I AM OPEN FOR ANY SUGGESTIONS OF IMPROVEMENT TO THIS CODE !!**
+***The code only works with https://github.com/moggieuk/Happy-Hare** If you haven't updated yet you really should.
 
-[thisiscam](https://github.com/thisiscam) has created the ercf_additional.cfg which, once you include it in your printer.cfg should do the work and the modification of the ercf_software.cfg listed below is no longer needed. As I am currently rebuilding my ERCF this is untested by me and thisiscam already announced an update :) 
+Copy mmu_additional.cfg to your printer config directory mmu/base/ and include it in your printer.cfg below all of the mmu includes via [include mmu/base/mmu_additional.cfg]
 
--> For know I will leave the code below as information.
+You will need to adjust the parameters in mmu_addtional as well, like setting up your cutter location, speeds, etc. More information in the cfg file itself.
-
-I use [Happy Hare](https://github.com/moggieuk/ERCF-Software-V3) with my ERCF. So I only tested it with this code. On your running ERCF config you'll need to modify the "_ERCF_FORM_TIP_STANDALONE" macro in your "ercf_software.cfg"
 
 
-As I am still testing I am really open for improvements of the Code. As I have no drag chain due to canbus the best position for me was in the back of my printer. If you use a drag chain you maybe need to adjust the gcode below to avoid any collision with your drag chain.
 
-In the Machine start g-Code you need to add this (i a separate line)
-```
-ERCF_CHANGE_TOOL TOOL={initial_tool} STANDALONE=1 
-```
 
-### Modification of "ercf_software.cfg"
-We will use the STANDALONE=1 mode and repleace the tip forming macro. So set the 
-```
-variable_standalone = 1 # 0 slicer, 1 Happy Hare macro (turn off in slicer)
-```
-Adjustment of the Tip Forming macro
-```
-########################################################################
-# Standalone Tip Forming (for rapid tuning of Slicer values)
-########################################################################
-[gcode_macro _ERCF_FORM_TIP_STANDALONE]
-gcode:
-    G92 E0
-    G1 E-35 F3000         #Retraced before the cut based on your hotend. This is working for Dragon HF
-    G1 X50 Y357 F5000     #Start position for the cutting procedure based on your position of the cutting point
-    G1 X0 Y357 F2000      #Cut position for the cutting procedure based on your position of the cutting point
-    G1 X50 Y357 F7000     #Return to starting point of cutting procedure
-    G92 E0
-    G1 E-80 F3000         #Retract filament out of your extruder. Based on your setup
-    G92 E0
-    G90
-```

mmu_additional.cfg

@@ -1,5 +1,11 @@
 [gcode_macro CUT_FILAMENT]
-description: Cut filament by pressing the cutter on a fixed pin with a horizontal movement. 
+description: Cut filament by pressing the cutter on a fixed pin with a horizontal movement. Based on Thiscams macro but updated to work with HHv2
+
+#Modify the below settings in mmu_parameters.cfg
+
+#toolhead_sensor_to_nozzle: 62 this will need to be reduced to compensate for the extra filament letf in the nozzle so probably to 5 to 15mm shorter based on the variable_retract_length: below.
+#force_form_tip_standalone: will need to be set to 1 and all tip forming settings will need to be disabled in your slicer including ramming.
+#slicer_tip_park_pos: will need to be set just above the cutter slot.
 
 # Distance to retract prior to making the cut, this reduces wasted filament but might cause clog 
 # if set too large and/or if there are gaps in the hotend assembly 
@@ -8,8 +14,8 @@ variable_retract_length: 35
 
 # The location of the pin, this should be the position of the toolhead when the cutter 
 # just lightly touches the pin
-variable_pin_loc_x: 21
+variable_pin_loc_x: 13
-variable_pin_loc_y: 19
+variable_pin_loc_y: 56
 
 # The starting and end positions when making the cut
 # In particular, instead of making the cut by traveling to the pin location above, 
@@ -19,17 +25,17 @@ variable_pin_park_x_dist: 5.0
 
 # Position of the toolhead when the cutter is fully compressed
 # Should leave a small headroom to avoid banging the toolhead or gantry
-variable_pin_loc_x_compressed: 5.0
+variable_pin_loc_x_compressed: 0
 
 # Speed related settings
 # Note that if the cut speed is too fast, the steppers can lose steps
 # Therefore, for a cut: 
 # - We first make a fast move to accumulate some momentum and get the cut blade to the initial contact with the filament
 # - We then make a slow move for the actual cut to happen 
-variable_travel_spd: 7800
+variable_travel_spd: 8000
 variable_cut_fast_move_spd: 2000
-variable_cut_slow_move_spd: 500
+variable_cut_slow_move_spd: 400
-variable_evacuate_speed: 7800
+variable_evacuate_speed: 8000
 variable_cut_dwell_time: 200 # time to dwell at the cut point in ms
 variable_cut_fast_move_fraction: 0.5 # fraction of the move that uses fast move 
 
@@ -39,35 +45,19 @@ variable_cut_fast_move_fraction: 0.5 # fraction of the move that uses fast move
 variable_safe_margin_x: 30
 variable_safe_margin_y: 30
 
-# Whether or not to make a second cut
+#this is the length of filament to move after filament has been cut, just need enough to move it away from the cutting slot.
-# The goal of the second cut is to avoid filament adding friction to the blade causing the lever unable to decompress
+variable_cut_retract_length: 2
-# If set to a positive value, we first retract this amount, make the second cut, then extrude back
-# Set to 0 to disable to second cut
-# You should only enable this if you cannot get the lever to reliabily decompress.
-variable_second_cut_retract_length: 0
 
 # Whether to eject the filament at the end
 variable_final_eject: 0
 
-# Currently ERCF software assumes that tip forming move always moves the extruder (and consequently the encoder)
-# Ideally, we should bring formal support of filament cutters to the ERCF software
-# In the short term, we perform a "hack" where we wiggle the extruder a little after cutting, 
-# if the extruder did not make enough movement during the filament cutting phase.
-variable_extruder_minimum_movement: 0 # the minimum extruder movement required for this tip forming move, this depends on the minimum distance that the encoder can reliably detect
-                                      # setting it to a lower value requires the ERCF encoder to be more sensitive.
-variable_extruder_wiggle_length: 10 # the length to retract -> extrude during a wiggle, this needs to be large enough for the encoder to detect the movement
-variable_extruder_wiggle_repeat: 3 # number of repeats for the wiggle
-
-# State variables
-variable_retracted_length_: 0 # a state variable to keep track of how much we have retracted during the last cut, this is useful for restoring the filament position
-
 gcode:
     {% set RETRACT_LENGTH = params.RETRACT_LENGTH | default(printer['gcode_macro CUT_FILAMENT']['retract_length']) | float %}
     {% set FINAL_EJECT = params.FINAL_EJECT | default(printer['gcode_macro CUT_FILAMENT']['final_eject'], True) | int %}
     {% set current_loc_x = printer.gcode_move.gcode_position.x %}
     {% set current_loc_y = printer.gcode_move.gcode_position.y %}
 
-    SAVE_GCODE_STATE NAME=cut_filament_state
+    SET_PRESSURE_ADVANCE ADVANCE=0
     
     {% if ("x" not in printer.toolhead.homed_axes) or ("y" not in printer.toolhead.homed_axes) %}
         G28 X Y
@@ -85,35 +75,18 @@ gcode:
         G1 E-{RETRACT_LENGTH} F3000 # retract to save filament waste
         {% set _extruder_moved_dist = _extruder_moved_dist + RETRACT_LENGTH %}
     {% endif %}
-    SET_GCODE_VARIABLE macro=CUT_FILAMENT variable=retracted_length_ value={RETRACT_LENGTH}
 
     G90 # absolute positioning
     _MOVE_TO_CUTTER_PIN PIN_PARK_X_LOC={pin_park_x_loc} PIN_PARK_Y_LOC={pin_park_y_loc}
 
     # Make the main cut 
     _DO_CUT_MOTION PIN_PARK_X_LOC={pin_park_x_loc}
-    # Optional secondary cut to help decompressing the lever
-    {% if second_cut_retract_length > 0 %}
-        G1 E-{second_cut_retract_length} F3000
-        _DO_CUT_MOTION PIN_PARK_X_LOC={pin_park_x_loc}
-        G1 E{second_cut_retract_length} F3000
-    {% endif %}
 
-    {% if FINAL_EJECT == 1 %}
+    G1 E-{cut_retract_length} F3000 #moves filament after cut, but not past the toolhead sensor
-        G1 E-80 F3000
-        {% set _extruder_moved_dist = _extruder_moved_dist + 80 %}
-    {% endif %}
 
-    {% if _extruder_moved_dist < extruder_minimum_movement %}
+    M400
-        # make some wiggle moves so that the encoder catch them
+    M117 Filament cut!
-        {% for _ in range(extruder_wiggle_repeat) %}
+    RESTORE_GCODE_STATE NAME=MMU_state MOVE=1 MOVE_SPEED={travel_spd} #restores MMU state to bring the toolhead back over the purge block after a cut so no oozing.
-            G1 E-{extruder_wiggle_length} F3000
-            G1 E{extruder_wiggle_length} F3000
-        {% endfor %}
-    {% endif %}
-
-    SET_PRESSURE_ADVANCE ADVANCE={prev_pa} # restore PA
-    RESTORE_GCODE_STATE NAME=cut_filament_state
 
 [gcode_macro _MOVE_TO_CUTTER_PIN]
 description: helper to move the toolhead to the target pin in either safe or faster way, depending on toolhead clearance.
@@ -149,18 +122,7 @@ gcode:
     G4 P{cut_dwell_time}
     G1 X{pin_park_x_loc} F{evacuate_speed} # evacuate
 
-[gcode_macro restore_cutted_filament]
+    
-description: extrudes an amount equal (or proportional) to the retraction during the last cut
+[gcode_macro _MMU_FORM_TIP_STANDALONE]
 gcode:
-    SAVE_GCODE_STATE NAME=restore_cutted_filament_state
+    CUT_FILAMENT {rawparams} 
-    {% set RETRACTED_LENGTH = printer['gcode_macro CUT_FILAMENT']['retracted_length_'] | float %}
-    M83 # relative extrusion
-    G1 E{RETRACTED_LENGTH} F3000
-    SET_GCODE_VARIABLE macro=CUT_FILAMENT variable=retracted_length_ value=0 # clear the retracted amount
-    RESTORE_GCODE_STATE NAME=restore_cutted_filament_state
-
-
-[gcode_macro _ERCF_FORM_TIP_STANDALONE]
-gcode:
-    CUT_FILAMENT {rawparams}
-