Klipper set variable. 3. . This method can be used for other slicer variables too, not just temperatures / heating commands. 11. The available variables are not always published, however, so you sometimes need to dig around to find the names of them. Apr 20, 2025 · Klipper's macro system provides a powerful way to extend printer functionality through custom G-code commands. The descriptions in this document are formatted so that it is possible to cut-and-paste them into a printer config file. Macros can contain any valid GCode commands and when triggered the entire macro is executed to completion. I did a fresh clone of the msla branch and managed to compile t This document is a reference for options available in the Klipper config file. You need to set a dummy variable for the expression to work. All stored variables are loaded into the printer. So as you can see, this is a useful way to address the user/slicer trying to give your macros invalid value types. Any macro can read or set their values, it doesn't matter which macro "owns" the variable. When we want to access that variable, we use: This is simply the inverse of the SET_GCODE_VARIABLE command, we are reading the value of that variable and assigning it to a local variable called TARGET_TEMP. How it works [gcode_macro START_PRINT] gcode: SET_GCODE_VARIABLE MACRO=BEAM VARIABLE=present VALUE=0 You had a space missing from the variable_present line and an extra space after VALUE= that may or may not be against some stupid strict syntax rule. These extended commands all follow a similar format - they start with a command name and may be followed by one or more parameters. Ellis’ Print Tuning Guide Contributed by FatalBulletHit. There are a handful of different forms of variables used in Klipper and there is some overlap, particularly in how we interact with parameters. By leveraging Jinja2 templates, user-defined variables, and access to the printer state, macros can automate complex operations and implement custom behaviors. A filter for both name and value can be applied. Ellis’ Print Tuning Guide This dumps all current Klipper variables to the g-code terminal. Macros are a conv Apr 3, 2024 · The set ZZZ declares the variable that is used within the macro to actually do something with the passed information, e. to avoid overly long lines you can add the following at the top of the macro: Out of the box, Jinja doesn't really allow you to refer to keys on the left side of an expression, except for a namespace expression. This section will demonstrate passing temperature variables to PRINT_START. The Macros The sample-macros. The printer pseudo-variable provides access to the current state of various Klipper modules and objects. The same goes for other objects, such as lists. variables dict at startup and can be used in gcode macros. Variable Storage: Klipper provides two variable storage mechanisms: macro-level variables that persist during a session, and saved variables that persist across restarts. This helps to find Klipper system variables for use in macros. This allows macros to read and react to real-time printer conditions. Klipper can easily convert a float to an integer, and the result will be our local variable getting set to 43. The { } curly brackets are mandatory to access the variable. the M190 S{BED_TEMP}. Klipper uses "extended" G-Code commands for general configuration and status. I will go over the different forms, their strengths and weaknesses, and when best to use each kind. save_variables. The Pi 5 runs on Raspberry Pi OS Bookworm (64-bit), which defaults to Python 3. Since Klipper is effectively single-threaded, only one macro can be executed at a time (see delayed_gcodefor more on this). to prepare the print, heat up the system etc. Hi @sn4k3, I am trying to migrate my MSLA setup from a Raspberry Pi 4 to a Raspberry Pi 5. For example: SET_SERVO SERVO=myservo ANGLE=5. Via the Klipper macro system such variables can be passed into Klipper, e. Thanks! This returns value and type of a single variable to the g-code terminal. cfg provides basic examples for both START_PRINT and END_PRINT macros. Additional information are also included in the official documentation. Keys and indexes can be chained to access nested dictionaries and lists. g. I hope to also utilize this to allow for users to set collection macro variables in any macro. Macros are a collection of GCode commands2that Klipper executes as a unit when the macro is executed. jjek, 08npr, flde5z, izfr, lylyu, balkyo, g7jtaj, cel8, tk8rl, f2gfpc,