update bltouch offsets, screw positions. add start/end macro

nixos/lavender/printer/printer.cfg

@@ -102,9 +102,9 @@ max_z_accel: 100
 [bltouch]
 sensor_pin: ^PB1
 control_pin: PB0
-x_offset: -45.0
-y_offset: -10.0
-z_offset: 0
+x_offset: -40.0
+y_offset: -12.0
+z_offset: 1.72
 speed: 20
 samples: 1
 sample_retract_dist: 8.0
@@ -136,13 +136,13 @@ screw4:30,195
 screw4_name:4
 
 [screws_tilt_adjust]
-screw1: 67, 42
+screw1: 80, 50
 screw1_name: front left screw
-screw2: 237.60, 42
+screw2: 235, 50
 screw2_name: front right screw
-screw3: 237.60, 212
+screw3: 235, 208
 screw3_name: rear right screw
-screw4: 67.60, 212
+screw4: 80, 208
 screw4_name: rear left screw
 horizontal_move_z: 10
 speed: 200
@@ -154,6 +154,52 @@ screw_thread: CW-M4 # Use CW for Clockwise and CCW for Counter Clockwise
 [output_pin beeper]
 pin: PB13
 
+# Replace the slicer's custom start and end g-code scripts with
+# START_PRINT and END_PRINT. See docs/Slicers.md for more information on using these macros.
+[gcode_macro START_PRINT]
+gcode:
+    {% set BED_TEMP = params.BED_TEMP|default(60)|float %}
+    {% set EXTRUDER_TEMP = params.EXTRUDER_TEMP|default(200)|float %}
+    # Start bed heating
+    M140 S{BED_TEMP}
+    # Use absolute coordinates
+    G90
+    # Reset the G-Code Z offset (adjust Z offset if needed)
+    SET_GCODE_OFFSET Z=0.0
+    # Home the printer
+    G28
+    # Wait for bed to reach temperature
+    M190 S{BED_TEMP}
+    # Perform bed mesh leveling
+    BED_MESH_CALIBRATE
+    # Set and wait for nozzle to reach temperature
+    M109 S{EXTRUDER_TEMP} 
+    # Cura slicer purge line
+    G92 E0                           # Reset Extruder
+    G1 Z2.0 F3000                    # Move Z Axis up little to prevent scratching of Heat Bed
+    G1 X10.1 Y20 Z0.3 F5000.0        # Move to start position
+    G1 X10.1 Y200.0 Z0.3 F1500.0 E15 # Draw the first line
+    G1 X10.4 Y200.0 Z0.3 F5000.0     # Move to side a little
+    G1 X10.4 Y20 Z0.3 F1500.0 E30    # Draw the second line
+    G92 E0                           # Reset Extruder
+    G1 Z2.0 F3000                    # Move Z Axis up little to prevent scratching of Heat Bed
+    G1 X15 Y20 Z0.3 F5000.0          # Move over to prevent blob squish
+
+[gcode_macro END_PRINT]
+gcode:
+    # Turn off bed, extruder, and fan
+    M140 S0
+    M104 S0
+    M106 S0
+    # Move nozzle away from print while retracting
+    G91
+    G1 X-2 Y-2 E-3 F300
+    # Raise nozzle by 10mm
+    G1 Z10 F3000
+    G90
+    # Disable steppers
+    M84
+
 # Fluidd initial setup
 
 # Allows file uploads to work correctly.