#Z Homing Issue with CR Touch on Ender 3 Pro After Marlin 2.1.2.2 Update

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gray glen
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Hello everyone,

I've run into a challenging problem with my Ender 3 Pro. My setup worked perfectly under Marlin 2.1.2.1, but after attempting to update to Marlin 2.1.2.2, I'm facing Z homing issues (no, I did not save my config files for marlin 2.1.2.1 ._.).

Here's the situation:

Printer: Ender 3 Pro
Board: BigTreeTech SKR Mini E3 v3.0
Initial Firmware: Marlin 2.1.2.1 (no issues)
Post-Update Firmware: Marlin 2.1.2.2 (homing issues)
Symptom: CR Touch does not retract on bed contact; nozzle crashes into bed
Successful Test: Precompiled firmware from Marlin Builder worked without issues
Configuration: Supposed correct for CR Touch in Marlin
Connections: Checked; all good
Z Endstop: Not being used
EEPROM: Has been reset
Z Offset: Unchanged from previous setup
Manual CR Touch Test: Functions correctly (indicator turns red when triggered using the LCD test menu)
Custom Firmware Flashing: Issues only occur after flashing custom firmware from Marlin 2.1.2.2
I've meticulously checked the setup and retraced my steps multiple times. It's peculiar that a precompiled firmware from Marlin Builder for the same version works, but my custom-configured firmware does not.

Could there be a change or bug introduced in Marlin 2.1.2.2 that affects CR Touch operation, or perhaps a misstep in my configuration process?

Any insights, shared experiences, or solutions would be hugely appreciated. Thank you for your help!

shrewd girderBOT
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AI Help

It sounds like you've done a thorough job troubleshooting your Z homing issue with the CR Touch after updating to Marlin 2.1.2.2. Since a precompiled firmware from Marlin Builder works without issues, the problem may lie within your custom-configured firmware settings. Here are a few suggestions to further troubleshoot:

  1. Double-check your configuration settings for the CR Touch in Marlin 2.1.2.2. Pay close attention to any changes or new features introduced in that version that may affect the CR Touch operation.

  2. Compare your custom-configured firmware settings with the settings in the precompiled firmware that works. Look for any discrepancies or missing configurations that could be causing the homing issue.

  3. Consider reaching out to the Marlin community forums or support for insights or solutions. Other users may have encountered similar issues and could provide valuable advice or assistance.

  4. If possible, try reverting back to Marlin 2.1.2.1 temporarily to see if the ...

WARNING: This response is AI generated and may contain errors.
shrewd girderBOT
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gray glen
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?solved