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95 lines
5.1 KiB
Markdown
95 lines
5.1 KiB
Markdown
This document contains guidelines for contributing an example Klipper
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configuration.
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The example Klipper configs are located in the [config
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directory](../config/).
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# Guidelines
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1. Select the appropriate config filename prefix.
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1. The `printer` prefix is used for stock printers sold by a
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mainstream manufacturer.
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2. The `generic` prefix is used for a 3d printer board that may be
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used in many different types of printers.
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3. The `kit` prefix is for 3d printers that are assembled according
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to a widely used specification. These "kit" printers are
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generally distinct from normal "printers" in that they are not
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sold by a manufacturer.
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4. The `sample` prefix is used for config "snippets" that one may
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copy-and-paste into the main config file.
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5. The `example` prefix is used to describe printer kinematics.
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This type of config is typically only added along with code for
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a new type of printer kinematics.
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2. Use the appropriate filename suffix. The `printer` config files
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must end in a year followed by `.cfg` (eg, `-2019.cfg`). In this
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case, the year is an approximate year the given printer was
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sold. All example configuration files must end in `.cfg`.
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3. Klipper must be able to start `printer`, `generic`, and `kit`
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example config file without error. These config files should be
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added to the
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[test/klippy/printers.test](../test/klippy/printers.test)
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regression test case. Add new config files to that test case in the
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appropriate section and in alphabetical order within that section.
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4. The example configuration should be for the "stock" configuration
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of the printer. (There are too many "customized" configurations to
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track in the main Klipper repository.) Similarly, we only add
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example config files for printers, kits, and boards that have
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mainstream popularity (eg, there should be at least a 100 of them
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in active use).
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5. Only specify those devices present on the given printer or board.
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Do not specify settings specific to your particular setup.
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1. For `generic` config files, only those devices on the mainboard
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should be described. For example, it would not make sense to add
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a display config section to a "generic" config as there is no
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way to know if the board will be attached to that type of
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display. If the board has a specific hardware port to facilitate
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an optional peripheral (eg, a bltouch port) then one can add a
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"commented out" config section for the given device.
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2. Do not specify `pressure_advance` in an example config, as that
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value is specific to the filament, not the printer hardware.
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Similarly, do not specify `max_extrude_only_velocity` nor
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`max_extrude_only_accel` settings.
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3. Do not specify a config section containing a host path or host
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hardware. For example, do not specify `[virtual_sdcard]` nor
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`[temperature_host]` config sections.
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4. Only define macros that utilize functionality specific to the
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given printer or to define g-codes that are commonly emitted by
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slicers configured for the given printer.
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6. Where possible, it is best to use the same wording, phrasing,
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indentation, and section ordering as the existing config files.
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1. The top of each config file should list the type of
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micro-controller the user should select during "make
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menuconfig". It should also have a reference to
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"docs/Config_Reference.md".
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2. Do not copy the field documentation into the example config
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files. (Doing so creates a maintenance burden as an update to
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the documentation would then require changing it in many
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places.)
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3. Example config files should not contain a "SAVE_CONFIG" section.
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If necessary, copy the relevant fields from the SAVE_CONFIG
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section to the appropriate section in the main config area.
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4. Use `field: value` syntax instead of `field=value`.
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5. When adding an extruder `rotation_distance` it is preferable to
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specify a `gear_ratio` if the extruder has a gearing mechanism.
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We expect the rotation_distance in the example configs to
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correlate with the circumference of the hobbed gear in the
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extruder - it is normally in the range of 20 to 35mm. When
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specifying a `gear_ratio` it is preferable to specify the actual
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gears on the mechanism (eg, prefer `gear_ratio: 80:20` over
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`gear_ratio: 4:1`).
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6. Avoid defining field values that are set to their default
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value. For example, one should not specify `min_extrude_temp:
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170` as that is already the default value.
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7. Where possible, lines should not exceed 80 columns.
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7. Do not use any deprecated features in the example config file. The
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`step_distance` parameter is deprecated and should not be in any
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example config file.
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8. Do not disable a default safety system in an example config file.
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For example, a config should not specify a custom
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`max_extrude_cross_section`. Do not enable debugging features. For
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example there should not be a `force_move` config section.
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Example config files are submitted by creating a github "pull
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request". Please also follow the directions in the [contributing
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document](CONTRIBUTING.md).
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