firmware-config: add klipper TMC driver tweaks

docs/index.md

@@ -52,6 +52,7 @@ Heavily expanded firmware with extensive features and customization. Includes al
 - [Firmware Configuration](firmware_config.md) - Customize firmware behavior via web interface or config file
 - [Camera Support](camera_support.md) - Hardware-accelerated camera stack with WebRTC streaming for internal and USB cameras
 - [Klipper and Moonraker Custom Includes](klipper_includes.md) - Add custom configuration files via Fluidd/Mainsail
+- [Klipper Tweaks](tweaks.md) - Experimental TMC driver optimizations (firmware-config only)
 - [RFID Filament Tag Support](rfid_support.md) - NTAG213/215/216 support for OpenSpool format
 - [Remote Screen](remote_screen.md) - View and control printer screen remotely via web browser
 - [Monitoring](monitoring.md) - Integration with Prometheus, Home Assistant, DataDog, and other monitoring systems

docs/tweaks.md

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+---
+title: Klipper Tweaks
+---
+
+# Klipper Tweaks
+
+Advanced experimental tweaks for Klipper stepper motor driver configuration. These settings can **only** be configured via the [Firmware Configuration](firmware_config.md) web interface under **Settings → Tweaks**.
+
+> **Warning**: These are experimental features that modify low-level stepper driver parameters. Use with caution and monitor your printer carefully after enabling.
+
+## TMC AutoTune
+
+Applies optimized stepper motor driver settings for TMC2240 drivers.
+
+**What it does:**
+- Optimizes PWM settings for quieter operation
+- Configures StallGuard and CoolStep parameters
+- Adjusts timing parameters for better heat management
+- Fine-tunes driver parameters for improved performance
+
+**Risks:**
+- May cause motors to overheat if cooling is insufficient
+- Could result in reduced torque or skipped steps under heavy load
+- Incorrect settings may affect print quality
+- Changes low-level driver parameters that override defaults
+
+**Recommendation:**
+- Monitor motor temperatures during first use
+- Test with simple prints before production work
+- Revert to disabled if you experience issues
+
+**Configuration:**
+This feature can **only** be configured via Firmware Configuration web interface. Manual configuration is not supported.
+
+## TMC Reduced Current
+
+Lowers the stepper motor run current from 1.2A to 1.0A for X and Y axes.
+
+**What it does:**
+- Reduces X and Y axis motor current to 1.0A
+- Lowers motor heat generation
+- Results in quieter motor operation
+
+**Risks:**
+- May cause skipped steps under heavy load or fast movements
+- Could result in layer shifts on demanding prints
+- May reduce positioning accuracy under high acceleration
+
+**Recommendation:**
+- Monitor print quality after enabling
+- Watch for layer shifts or positioning issues
+- Disable if you experience motion problems
+
+**Configuration:**
+This feature can **only** be configured via Firmware Configuration web interface. Manual configuration is not supported.
+
+## How to Configure
+
+1. Open the printer's web interface (Fluidd or Mainsail)
+2. Navigate to **Firmware Config** in the menu
+3. Go to **Settings → Tweaks**
+4. Select the desired option for each tweak
+5. Confirm the warning dialog
+6. Klipper will automatically restart to apply changes
+
+Changes take effect immediately after Klipper restarts (no reboot required).
+
+## Technical Details
+
+These tweaks work by adding or removing configuration files from `/oem/printer_data/config/extended/klipper/`:
+- `tmc_autotune.cfg` - TMC AutoTune parameters
+- `tmc_current.cfg` - Reduced current settings
+
+These files are automatically included by the main printer configuration if present. Manual editing of these files is not recommended as they will be overwritten by the Firmware Configuration interface.

overlays/firmware-extended/21-klipper-tweaks/root/usr/local/share/firmware-config/functions/21_settings_tweaks_tmc_autotune.yaml

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+settings:
+  tweaks:
+    label: Tweaks
+    items:
+      tmc_autotune:
+        label: TMC AutoTune
+        get_cmd:
+          - bash
+          - -c
+          - test -f /oem/printer_data/config/extended/klipper/tmc_autotune.cfg && echo "enabled" || echo "disabled"
+        options:
+          enabled:
+            label: Enabled
+            confirm: "Enable TMC AutoTune? This optimizes TMC2240 driver settings for quieter operation and better performance. Warning: May cause motors to overheat if cooling is insufficient. Monitor temperatures during first use."
+            cmd:
+              - bash
+              - -xc
+              - |
+                cp /usr/local/share/firmware-config/tweaks/klipper/tmc_autotune.cfg /oem/printer_data/config/extended/klipper/tmc_autotune.cfg &&
+                echo "TMC AutoTune enabled. Restarting Klipper..." &&
+                /etc/init.d/S60klipper restart
+          disabled:
+            label: Disabled
+            cmd:
+              - bash
+              - -xc
+              - |
+                rm -f /oem/printer_data/config/extended/klipper/tmc_autotune.cfg &&
+                echo "TMC AutoTune disabled. Restarting Klipper..." &&
+                /etc/init.d/S60klipper restart
+        default: disabled

overlays/firmware-extended/21-klipper-tweaks/root/usr/local/share/firmware-config/functions/21_settings_tweaks_tmc_current.yaml

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+settings:
+  tweaks:
+    label: Tweaks
+    items:
+      tmc_reduce_current:
+        label: TMC Reduced Current
+        get_cmd:
+          - bash
+          - -c
+          - test -f /oem/printer_data/config/extended/klipper/tmc_current.cfg && echo "enabled" || echo "disabled"
+        options:
+          enabled:
+            label: Enabled
+            confirm: "Enable TMC Reduced Current? This lowers X/Y motor current from 1.2A to 1.0A for quieter operation and less heat. Warning: May cause skipped steps or layer shifts under heavy load. Monitor print quality after enabling."
+            cmd:
+              - bash
+              - -xc
+              - |
+                cp -v /usr/local/share/firmware-config/tweaks/klipper/tmc_current.cfg /oem/printer_data/config/extended/klipper/tmc_current.cfg &&
+                echo "TMC Reduced Current enabled. Restarting Klipper..." &&
+                /etc/init.d/S60klipper restart
+          disabled:
+            label: Disabled
+            cmd:
+              - bash
+              - -xc
+              - |
+                rm -vf /oem/printer_data/config/extended/klipper/tmc_current.cfg &&
+                echo "TMC Reduced Current disabled. Restarting Klipper..." &&
+                /etc/init.d/S60klipper restart
+        default: disabled

overlays/firmware-extended/21-klipper-tweaks/root/usr/local/share/firmware-config/tweaks/klipper/tmc_autotune.cfg

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+# TMC AutoTune Configuration - Driver Parameters
+# Origin: https://github.com/Argolein/SnapmakerU1/blob/main/SnapmakerU1-CustomConfig/01_ArgoConfig.cfg
+# This configuration provides optimized TMC2240 stepper driver settings for better
+# motor performance, noise reduction, and heat management.
+#
+# WARNING: These settings modify low-level stepper driver parameters. Incorrect
+# configuration may cause motor overheating, reduced print quality, or mechanical issues.
+# Use at your own risk and monitor temperatures during initial use.
+
+[tmc2240 stepper_x]
+# ---- tmc autotune ----
+driver_TOFF: 5
+driver_HSTRT: 7
+driver_HEND: 9
+driver_TBL: 1
+driver_TPFD: 2
+driver_PWM_AUTOSCALE: True
+driver_PWM_AUTOGRAD: True
+driver_PWM_OFS: 22
+driver_PWM_GRAD: 13
+driver_PWM_REG: 15
+driver_PWM_LIM: 4
+driver_SEMIN: 2
+driver_SEUP: 3
+driver_SEMAX: 4
+driver_SEDN: 2
+driver_SEIMIN: 1
+driver_MULTISTEP_FILT: True
+driver_IHOLDDELAY: 12
+driver_IRUNDELAY: 0
+
+[tmc2240 stepper_y]
+# ---- tmc autotune ----
+driver_TOFF: 5
+driver_HSTRT: 7
+driver_HEND: 9
+driver_TBL: 1
+driver_TPFD: 2
+driver_PWM_AUTOSCALE: True
+driver_PWM_AUTOGRAD: True
+driver_PWM_OFS: 22
+driver_PWM_GRAD: 13
+driver_PWM_REG: 15
+driver_PWM_LIM: 4
+driver_SEMIN: 2
+driver_SEUP: 3
+driver_SEMAX: 4
+driver_SEDN: 2
+driver_SEIMIN: 1
+driver_MULTISTEP_FILT: True
+driver_IHOLDDELAY: 12
+driver_IRUNDELAY: 0

overlays/firmware-extended/21-klipper-tweaks/root/usr/local/share/firmware-config/tweaks/klipper/tmc_current.cfg

@@ -0,0 +1,13 @@
+# TMC Reduced Current Configuration
+# This configuration reduces the stepper motor run current for lower heat generation
+# and quieter operation.
+#
+# WARNING: Reduced current may cause skipped steps under heavy load or fast movements.
+# Monitor print quality and increase current if you experience layer shifts or other
+# motion issues.
+
+[tmc2240 stepper_x]
+run_current: 1.0  # reduced from default 1.2
+
+[tmc2240 stepper_y]
+run_current: 1.0  # reduced from default 1.2