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docs: Add an initial configuration checklist document
Provide a document with basic steps that a user can run to verify that the pins in the configuration file are set correctly. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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This document provides a list of steps to help confirm the pin
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settings in the Klipper printer.cfg file. It is a good idea to run
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through these steps after following the steps in the
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[installation document](Installation.md).
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During this guide, it may be necessary to make changes to the Klipper
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config file. Be sure to issue a RESTART command after every change to
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the config file to ensure that the change takes effect (type "restart"
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in the Octoprint terminal tab and then click "Send"). It's also a good
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idea to issue a STATUS command after every RESTART to verify that the
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config file is successfully loaded.
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### Verify temperature
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Start by verifying that temperatures are being properly
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reported. Navigate to the Octoprint temperature tab.
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![octoprint-temperature](img/octoprint-temperature.png)
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Verify that the temperature of the nozzle and bed (if applicable) are
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present and not increasing. If it is increasing, remove power from the
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printer. If the temperatures are not accurate, review the
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"sensor_type" and "sensor_pin" settings for the nozzle and/or bed.
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### Verify M112
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Navigate to the Octoprint terminal tab and issue an M112 command in
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the terminal box. This command requests Klipper to go into a
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"shutdown" state. It will cause Octoprint to disconnect from Klipper -
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navigate to the Connection area and click on "Connect" to cause
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Octoprint to reconnect. Then navigate to the Octoprint temperature tab
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and verify that temperatures continue to update and the temperatures
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are not increasing. If temperatures are increasing, remove power from
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the printer.
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The M112 command causes Klipper to go into a "shutdown" state. To
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clear this state, issue a FIRMWARE_RESTART command in the Octoprint
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terminal tab.
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### Verify heaters
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Navigate to the Octoprint terminal tab and type in 50 followed by
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enter in the "Tool" temperature box. The extruder temperature in the
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graph should start to increase (within about 30 seconds or so). Then
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go to the "Tool" temperature drop-down box and select "Off". After
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several minutes the temperature should start to return to its initial
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room temperature value. If the temperature does not increase then
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verify the "heater_pin" setting in the config.
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If the printer has a heated bed then perform the above test again with
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the bed.
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### Verify stepper motor enable pin
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Verify that all of the printer axes can manually move freely (the
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stepper motors are disabled). If not, issue an M84 command to disable
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the motors. If any of the axes still can not move freely, then verify
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the stepper "enable_pin" configuration for the given axis. On most
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commodity stepper motor drivers, the motor enable pin is "active low"
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and therefore the enable pin should have a "!" before the pin (for
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example, "enable_pin: !ar38").
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### Verify endstops
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Manually move all the printer axes so that none of them are in contact
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with an endstop. Send a QUERY_ENDSTOPS command via the Octoprint
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terminal tab. It should respond with the current state of all of the
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configured endstops and they should all report a state of "open". For
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each of the endstops, rerun the QUERY_ENDSTOPS command while manually
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triggering the endstop. The QUERY_ENDSTOPS command should report the
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endstop as "TRIGGERED".
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If the endstop appears inverted (it reports "open" when triggered and
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vice-versa) then add a "!" to the pin definition (for example,
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"endstop_pin: ^!ar3"), or remove the "!" if there is already one
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present.
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If the endstop does not change at all then it generally indicates that
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the endstop is connected to a different pin. However, it may also
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require a change to the pullup setting of the pin (the '^' at the
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start of the endstop_pin name - most printers will use a pullup
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resistor and the '^' should be present).
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### Verify stepper motor direction
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Make sure the printer.cfg file does not have "homing_speed" set for
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any axis (or set it to a value of 5 or less).
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On cartesian style printers, manually move the X axis to a midway
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point, issue a G28X0 command, and verify that the X motor moves slowly
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towards the endstop defined for that axis. If the motor moves in the
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wrong direction issue an M112 command to abort the move. A wrong
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direction generally indicates that the "dir_pin" for the axis needs to
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be inverted. This is done by adding a '!' to the "dir_pin" in the
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printer config file (or removing it if one is already there). For
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example, change "dir_pin: xyz" to "dir_pin: !xyz". Then RESTART and
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retest the axis. If the axis does not move at all, then verify the
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"enable_pin" and "step_pin" settings for the axis. For cartesian style
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printers, repeat the test for the Y and Z axis with G28Y0 and G28Z0.
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For delta style printers, manually move all three carriages to a
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midway point and then issue a G28 command. Verify all three motors
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move simultaneously upwards. If not, issue an M112 command and follow
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the troubleshooting steps in the preceding paragraph.
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### Verify extruder motor
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To test the extruder motor it will be necessary to heat the extruder
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to a printing temperature. Navigate to the Octoprint temperature tab
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and select a target temperature from the temperature drop-down box (or
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manually enter an appropriate temperature). Wait for the printer to
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reach the desired temperature. Then navigate to the Octoprint control
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tab and click the "Extrude" button. Verify that the extruder motor
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turns in the correct direction. If it does not, see the
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troubleshooting tips in the previous section to confirm the
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"enable_pin", "step_pin", and "dir_pin" settings for the extruder.
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### Next steps
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This guide is intended to help with basic verification of pin settings
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in the Klipper configuration file. It may be necessary to perform
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detailed printer calibration - a number of guides are available online
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to help with this (for example, do a web search for "3d printer
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calibration").
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@ -142,6 +142,10 @@ In addition to common g-code commands, Klipper supports a few extended
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commands - "status" and "restart" are examples of these commands. Use
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the "help" command to get a list of other extended commands.
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After Klipper reports that the "printer is ready" go on to the
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[config check document](Config_checks.md) to perform some basic checks
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on the pin definitions in the config file.
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Contacting the developers
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=========================
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@ -4,7 +4,9 @@ machine. The host code is intended to run on a low-cost
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general-purpose machine such as a Raspberry Pi, while the
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micro-controller code is intended to run on commodity micro-controller
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chips. Read [features](Features.md) for reasons to use Klipper. See
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[installation](Installation.md) to get started with Klipper.
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[installation](Installation.md) to get started with Klipper. See
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[config checks](Config_checks.md) for a guide to verify basic pin
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settings in the config file.
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The Klipper configuration is stored in a simple text file on the host
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machine. The [config/example.cfg](../config/example.cfg) file serves
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@ -26,7 +28,8 @@ Developer Documentation
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There are also several documents available for developers interested
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in understanding how Klipper works. Start with the
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[code overview](Code_Overview.md) document - it provides information
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on the structure and layout of the Klipper code.
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on the structure and layout of the Klipper code. See the
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[contributing](CONTRIBUTING.md) document to submit improvements to Klipper.
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See [protocol](Protocol.md) for information on the low-level messaging
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protocol between host and micro-controller. See also
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