Sgr A* VMT
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### Notice
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Using this module requires a certain level of knowledge and experience with Klipper. Ensure that you have the ability to configure and modify it before installation.
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To maintain accuracy, install the sensor coil board with its top surface as low as possible below the bottom surface of the heater block.
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## Important Instructions
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- Follow the tutorial strictly, especially regarding commands like G28. Only perform the mentioned steps.
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- Execute the following git command in the user directory to download the accompanying script:
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```bash
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git clone https://gitee.com/NBTP/IDM.git
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```
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- Run `chmod +x IDM/install.sh` after downloading.
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- If unsure about your pip source or unaware of what pip is, set pip to Tsinghua source using:
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```bash
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~/klippy-env/bin/pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
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```
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Then install with:
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```bash
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IDM/install.sh
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```
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### Configuration Example for printer.cfg
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```ini
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[idm]
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serial:
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#canbus_uuid:
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# Path to the serial port for the idm device. Typically has the form
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# /dev/serial/by-id/usb-idm_idm_...
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speed: 40.
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# Z probing dive speed.
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lift_speed: 5.
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# Z probing lift speed.
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backlash_comp: 0.5
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# Backlash compensation distance for removing Z backlash before measuring
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# the sensor response.
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x_offset: 0.
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# X offset of idm from the nozzle.
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y_offset: 21.1
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# Y offset of idm from the nozzle.
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trigger_distance: 2.
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# idm trigger distance for homing.
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trigger_dive_threshold: 1.5
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# Threshold for range vs dive mode probing. Beyond `trigger_distance +
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# trigger_dive_threshold` a dive will be used.
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trigger_hysteresis: 0.006
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# Hysteresis on trigger threshold for untriggering, as a percentage of the
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# trigger threshold.
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cal_nozzle_z: 0.1
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# Expected nozzle offset after completing manual Z offset calibration.
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cal_floor: 0.1
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# Minimum z bound on sensor response measurement.
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cal_ceil:5.
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# Maximum z bound on sensor response measurement.
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cal_speed: 1.0
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# Speed while measuring response curve.
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cal_move_speed: 10.
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# Speed while moving to position for response curve measurement.
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default_model_name: default
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# Name of the default idm model to load.
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mesh_main_direction: x
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# Primary travel direction during mesh measurement.
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#mesh_overscan: -1
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# Distance to use for direction changes at mesh line ends. Omit this setting
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# and a default will be calculated from line spacing and available travel.
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mesh_cluster_size: 1
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# Radius of mesh grid point clusters.
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mesh_runs: 1
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# Number of passes to make during mesh scan.
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```
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Adjust the x and y direction offsets in the configuration. Ensure that during calibration, the nozzle moves the coils to the original xy position of the nozzle.
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Add this configuration to printer.cfg and modify serial to your IDM's serial number. To find the IDM serial, use the command:
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```bash
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ls /dev/serial/by-id/*
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```
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### For CAN Version
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Replace serial with canbus_uuid.
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Use the following command to search for the CAN UUID and fill it in:
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```bash
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~/klippy-env/bin/python ~/klipper/lib/canboot/flash_can.py -q
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```
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Note: After adding the UUID, remove serial.
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-------------------------------------------------
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Include the following in the configuration (optional but recommended):
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```ini
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[force_move]
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enable_force_move: true
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```
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### Remove the [probe] Module
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Remove the [probe] module from your configuration.
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If you've used Klicky, remove references to its scripts. Modify z limit (after stepper_z's endstop_pin:) to probe:z_virtual_endstop.
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Also, set:
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```ini
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[safe_z_home]
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home_xy_position: <your_x_axis_center_coordinate>,<your_y_axis_center_coordinate>
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z_hop: 10
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```
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If you've configured safe_z_home or homing_override, you can skip this step.
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#### Don't forget to set up [bed_mesh] to avoid errors.
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Omit the zero_reference_position in bed_mesh.
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After restarting, home x and y (g28 x y, don't home z), and move the nozzle to the center of the bed. Then enter SET_KINEMATIC_POSITION z=80.
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Now, you can control the z-axis movement and bring the nozzle close to the bed (or place an A4 paper for the right gap). Enter SET_KINEMATIC_POSITION z=0 (note that it's different from the previous command).
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Execute idm_calibrate. In the offset control box, click -0.1 for offset and confirm. It will automatically calibrate.
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If, after calibration, you encounter
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issues like not zeroing after a restart or reporting "no model," there might be a format error in your configuration file's auto-generated configuration. Correct the format.
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For 4Z machines like VORON2.4, add the following configuration to the file:
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```ini
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[gcode_macro QUAD_GANTRY_LEVEL]
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rename_existing: _QUAD_GANTRY_LEVEL
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gcode:
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SAVE_GCODE_STATE NAME=STATE_QGL
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BED_MESH_CLEAR
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{% if not printer.quad_gantry_level.applied %}
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_QUAD_GANTRY_LEVEL horizontal_move_z=10 retry_tolerance=1
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{% endif %}
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_QUAD_GANTRY_LEVEL horizontal_move_z=2
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G28 Z
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RESTORE_GCODE_STATE NAME=STATE_QGL
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```
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For 3Z machines like VORON Trident, add the following configuration:
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```ini
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[gcode_macro Z_TILT_ADJUST]
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rename_existing: _Z_TILT_ADJUST
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gcode:
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SAVE_GCODE_STATE NAME=STATE_Z_TILT
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BED_MESH_CLEAR
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{% if not printer.z_tilt.applied %}
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_Z_TILT_ADJUST horizontal_move_z=10 retry_tolerance=1
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{% endif %}
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_Z_TILT_ADJUST horizontal_move_z=2
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G28 Z
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RESTORE_GCODE_STATE NAME=STATE_Z_TILT
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```
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It's recommended to add the following configuration to the moonraker.conf file for easy script updates:
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```ini
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[update_manager idm]
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type: git_repo
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channel: dev
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path: ~/IDM
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origin: https://gitee.com/NBTP/IDM.git
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env: ~/klippy-env/bin/python
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requirements: requirements.txt
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install_script: install.sh
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is_system_service: False
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managed_services: klipper
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info_tags:
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desc=idm
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```
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For versions with an accelerometer (lis2dw), add the following to enable it:
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```ini
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[lis2dw]
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cs_pin: idm:PA3
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spi_bus: spi1
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[resonance_tester]
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accel_chip: lis2dw
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probe_points:
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125, 125, 20 #set your prefered calibrating position
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```
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Configure and use shaper_calibrate for resonance testing.
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Adjust the z offset before printing. The z offset is saved in the model_offset variable.
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### Note
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Before adjusting the z offset, ensure to disable the bed mesh, complete mechanical leveling, and zero once again.
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@@ -60,7 +60,7 @@ mesh_main_direction: x
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# and a default will be calculated from line spacing and available travel.
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mesh_cluster_size: 1
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# Radius of mesh grid point clusters.
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mesh_runs: 2
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mesh_runs: 1
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# Number of passes to make during mesh scan.
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```
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请注意调整配置中的x y方向偏移。确保校准过程中喷头会将线圈移动到原先喷嘴所在xy位置。
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Reference in New Issue
Block a user