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A macro is a small program written in Klipper/Gcode language.

It can be called from:

• A GCODE file
• The Fluidd/Mainsail console (press the English letter C in Fluidd)

Enable the standard screen and reboot the printer.

• GUPPY: 0 = disable GuppyScreen, 1 = enable GuppyScreen (default: 1)

Disable the standard screen. Saves 13 MB of RAM (20 MB on older firmware versions).

GuppyScreen (alternative screen implementation):

• Supports all native screen features except WiFi configuration.
• Uses 9 MB RAM (vs. 23 MB for the native screen).
• Prevents Klipper freezes during reboots.
• Recommended for non-native screen workflows.
• Better print recovery after interruptions.
• Based on this fork.

Warning:

• Do not disable the screen unless you fully understand bed leveling, Z-offset, and the START_PRINT/END_PRINT macros.
• The screen remains active for 3 minutes after reboot but does not affect Z-offset or printing.

Adjust activation timing via the DISPLAY_OFF_TIMEOUT global parameter.

Learn more about screen modes.

View memory usage.

Test EMMC performance and wear level. Parameters:

• SIZE — data size to write in MB (default: 100).
• SYNC — 1 = synchronous mode (measure speed), 0 = asynchronous background write (default: 1).
• FLASH — target storage: 0 = EMMC, 1 = USB flash, 2 = RAM (default: 0).
• RANDOM — use random data: 1 = yes, 0 = no (default: 0).

Stock firmware command:

./zfs.sh 400 1

Clear EMMC storage. Parameters:

• LOG — clear log files: 1 = yes, 0 = no (default: 1).
• ANY — clear all files (G-code, images, videos): 1 = yes, 0 = no (default: 0).

Display current system time.

Set system date and time.

• DT — date/time in YYYY.MM.DD-HH:MM:SS format.

Switch between Fluidd and Mainsail web interfaces.

Set timezone.

• ZONE — timezone identifier (default: Asia/Yekaterinburg).

Verify file integrity via MD5 checksum.

• DELETE — delete corrupted files: yes/no.

Usage:

1. Copy addMD5.bat (Windows) or addMD5.sh (macOS/Linux) from the printer's mod folder.
2. Add the script to your slicer's post-processing settings:
   • OrcaSlicer: Process → Other → Post-processing Scripts
   • PrusaSlicer/SuperSlicer: Print Settings → Output Options → Post-processing Scripts
3. Add CHECK_MD5 or CHECK_MD5 DELETE=true to your start G-code.

Note: Enabled by default via FORCE_MD5.

Update MCU firmware (experimental).

• Switches between Klipper v11 and v12.

Warnings:

• Klipper v12 disables extruder heating, temperature monitoring, and load cell functionality.
• Recovery requires factory reset.

Diagnose OS file integrity.

• RESTORE — 0 = no repair, 1 = repair damaged files (default: 0).

Checks:

• File permissions/MD5 hashes.
• Directory permissions.
• Symbolic links.

Recovery: Download intact files from here.