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PAM - Print Area Mesh for RatOS

  • adds dynamic mesh calibration to your printer and meshes only the first layer area.
  • can calculate the relative reference index for you and respects faulty regions if configured.
  • adds adaptive priming to RatOS v2.x

1. Install

SSH into your Raspberry PI and execute:

cd ~/
git clone https://github.com/HelgeKeck/pam.git
bash ~/pam/install.sh

2. Activate

Add this line to the end of your printer.cfg if you use RatOS.

[include pam/ratos.cfg]

Add this line to the end of your printer.cfg if you use Klipper. Call PAM instead of BED_MESH_CALIBRATE

[include pam/klipper.cfg]

3. Modify your slicers start print g-code

PrusaSlicer / SuperSlicer

MESH_CONFIG X0={first_layer_print_min[0]} Y0={first_layer_print_min[1]} X1={first_layer_print_max[0]} Y1={first_layer_print_max[1]}
START_PRINT EXTRUDER_TEMP=[first_layer_temperature] BED_TEMP=[first_layer_bed_temperature]

SoftFever

MESH_CONFIG X0={first_layer_print_min[0]} Y0={first_layer_print_min[1]} X1={first_layer_print_max[0]} Y1={first_layer_print_max[1]}
START_PRINT EXTRUDER_TEMP=[nozzle_temperature_initial_layer] BED_TEMP=[bed_temperature_initial_layer_single]

Ideamaker

MESH_CONFIG X0={print_pos_min_x} Y0={print_pos_min_y} X1={print_pos_max_x} Y1={print_pos_max_y}
START_PRINT EXTRUDER_TEMP={temperature_extruder1} BED_TEMP={temperature_heatbed}

Simplify 3D V5

MESH_CONFIG X0=[build_min_x] Y0=[build_min_y] X1=[build_max_x] Y1=[build_max_y]
START_PRINT EXTRUDER_TEMP=[extruder0_temperature] BED_TEMP=[bed0_temperature]

Cura

MESH_CONFIG X0=%MINX% Y0=%MINY% X1=%MAXX% Y1=%MAXY%
START_PRINT EXTRUDER_TEMP={material_print_temperature_layer_0} BED_TEMP={material_bed_temperature_layer_0}

To make PAM work with Cura you need to install a post processing plugin

  1. in cura open menu Help -> Show configuration folder
  2. copy MeshPrintSize.py into the scripts folder
  3. restart cura
  4. in cura open menu Extensions -> Post processing -> Modify G-Code and select Mesh Print Size

4. Relative Reference Index

This is optional. PAM can calculate the relative reference index for you and respects faulty regions if configured.

More infos here: https://www.klipper3d.org/Bed_Mesh.html#the-relative-reference-index

[pam]
auto_reference_index: True      # Activate the auto reference index calculation
                                # default = False, no index will be used

# set these values only in case you dont home z in the middle of the build plate 
z_endstop_x: 90                 # Nozzle X-Coordinate, Probe offsets will be respected 
                                # default = -1, RatOS uses its settings, Klipper the center of the build plate
z_endstop_y: 90                 # Nozzle Y-Coordinate, Probe offsets will be respected
                                # default = -1, RatOS uses its settings, Klipper the center of the build plate

5. Adaptive Priming

This is optional and works only for RatOS V2.x. It moves the priming location closer to the meshed area.

[pam]
optimus_prime: True             # Activate the adaptive priming feature
                                # default = False, RatOS settings will be used

# In case you have a non EVA 3.1 Toolhead, you can configure your toolhead offsets
# These are the default values, for a EVA 3.1 Toolhead  with a 8mm probe attached
toolhead_offset_left: 35
toolhead_offset_right: 30
toolhead_offset_front: 15
toolhead_offset_back: 15

6. Moonraker Update Manager

If you want to receive updates for PAM, add this at the end of the moonraker.conf file.

[update_manager pam]
type: git_repo
primary_branch: main
path: ~/pam
origin: https://github.com/HelgeKeck/pam.git
is_system_service: False
managed_services: klipper