> For the complete documentation index, see [llms.txt](https://docs.cartographer3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cartographer3d.com/cartographer-probe/archive/v1-rp2040-based-probes/cartographer-rp2040-1.md). # Calibration Home the machine in X and Y: ``` G28 X Y ``` Position the nozzle in the center of the bed. You will need to adjust the coordinates for your machine. ``` G0 X125 Y125 ``` Start the calibration process: ``` IDM_CALIBRATE ``` You can either use the web interface to adjust the nozzle height from the bed, or `TESTZ Z=-0.01` to lower it.\ \ Use a piece of paper or a feeler gauge to measure the offset. Once finished remove the paper/gauge and accept the position. ``` ACCEPT ``` Save the results to your config file. ``` SAVE_CONFIG ``` #### Initial Tests Home your printer. ``` G28 ``` You can test the accuracy. ``` PROBE_ACCURACY ``` You can also measure the backlash of your Z axis ``` IDM_ESTIMATE_BACKLASH ``` You can now run a Bed Mesh Calibration (I would advise doing either a `Z_TILT` or `QUAD_GANTRY_LEVEL` before. ``` BED_MESH_CALIBRATE ``` Your Cartographer is now calibrated and ready to go. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.cartographer3d.com/cartographer-probe/archive/v1-rp2040-based-probes/cartographer-rp2040-1.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.