Mini 3 Master SD Card Release Notes: 4/18/2024: Initial release. 4/24/2024 Update: Changed update manager branch for lulzbot-config from main to Mini3_config. Added script for 40Hz and 35Hz HDMI5 refresh rate, set it to 35Hz. Added code from BTT to enable alsamixer volume control, set volume to 80%. Increased Z maximum and endstop position to 186 in printer.cfg to make sure endstop and offset cal work. SHA256 hash of image file: b376bea2ab0132ecc83f18032b08a0f7ab58a3e4af6ccf44e735bf067b45b63c 5/8/2024 Update: Changed Mainsail printer name to "LulzBot Mini 3." Changed KlipperScreen printer name to "Mini 3." Did all updates available in update manager. All updates to Klipper, KlipperScreen, and Mainsail up to today are incorporated. Removed the Moonraker local git tag with "git tag --delete v0.0.1" so update manager will see the right version tag. - Will fix dependency message that was appearing on the bell icon. Included fixes for USB Automount that makes flash drives writeable. Should help thumbnails show properly on flash drives. Add a script that runs on each reboot to clean up orphaned empty usb_sd* folders in gcodes folder. - This removes the folders that sometimes don't get deleted if you pull a flash drive when Mainsail or KlipperScreen is in the folder. SHA256 hash of image file: f5474b8fba2ca055e93a65b8392012906da74c30086fe528f057b52bf9ea71eb 7/9/2024 Update: Did all current updates available in the update manager as of July 8th, 2024. Set MET285 as the selected tool head type. Set saved filament sensor state to ON. (Default was on, but this makes sure the saved state works.) Removed "backup" bed mesh. It served no purpose. Set saved "default" bed mesh to all zeros. Set saved BLTouch offset to 1.000 Set default PID values for extruder to match MET285. Updated pre-compiled firmware bin files for the Manta and EBB, for production flashing. Fixed the issue where BTT's update to udev reset the boot logo back to the Big Tree Tech logo. Set up for the BTT USB accelerometer: Added symbolic link in the ~/printer_data/config folder to the .BTT_USB_ADXL345.cfg file in lulzbot-config. Added a commented out line in printer.cfg that can be un-commented to enable the BTT USB accelerometer. Added new defaults.json for Mainsail that sets the Z-Offset save option to PROBE. Reset to defaults, made sure it worked. Added a ".original_printer.cfg" file with the contents of the .printer.cfg file as it was made for this SD image. This can be used to restore the original state of the printer.cfg file. Updated default input shaper types and frequencies to better represent current production printers. Fixed issue where a recent update to udev broke the usb-automount functionality. SHA256 hash of image file: 4f0e4afbcb6a84aed99abbfa4f00eff5869e0dc058f6db05d9447b6805e78054 9/4/2024 Update: Added symlink folder from printer_data/config/lulzbot to lulzbot-config/lulzbot for config files. Moved config files into the new folder. Reworked MCU flashing scripts, put them into a folder in lulzbot-config, with pre-compiled BIN files, so in the future we could push new bin files and users could flash MCUs without compiling. Added gcode shell command extension so we can run scripts from macros in the future. Created a few macros with this. - Added a macro to run the USB Auto-mount setup script. - Added macros to flash the Manta, EBB, and BTT USB Accelerometer. Added a boot up shell script that runs on boot but before klipper starts. This might let us push scripts to make future changes that couldn't be done through the update manager. Added a script to do automatic configuration of the BTT USB Accelerometer. It detects if the USB device is present, and changes the config file to enable or disable it. Updated PID values for bed heater. Could result in faster bed heating and ability to reach higher temps. Installed a QR code generator package in Linux, for future use where we might live generate QR codes to display in KlipperScreen panels. Cleaned up the printer.cfg file. Removed lines for BLtouch offset, Z endstop height, etc, that get commented out anyway when calibration is done. The commented out lines cause confusion. Updated boot logo image. Update Mainsail side bar with new logo. Set Mainsail to default to save to probe, to work with the relative mesh probing method. Moved the USB automount setup script into lulzbot-config/lulzbot-scripts. Moved the USB automount folder cleanup script into lulzbot-config/lulzbot-scripts and called it with the new startup script. Moved the HDMI5 touch screen refresh rate script into lulzbot-config/lulzbot-scripts. Changed the refresh rate from 35 Hz to 40 Hz (I've seen a couple screens that didn't like 35 Hz.) Changed CAN Bus txqueuelen from 1024 to 128. Changed default Z-Endstop from 186 to 184. 186 is high enough that sometimes it comes down too low to do gantry calibrate, and I've not seen one that is actually as high as 184. SHA256 hash of image file: 66f6098f3189998e19f236070c686167515369071ae6482559c6bd4494a1d245 9/6/2024 Update: Fix order of includes at the top of the printer.cfg file. Include for mainsail.cfg needs to be first, before lulzbot/include_files.cfg. This fixes macro issues like the cancel_print not moving away from the print. May fix other macro issues we didn't even find. 8/12/2025 Update: Fixed the issue that came up with the update manager where OS updates wouldn't work anymore because the Linux OS maintainers changed a URL to the debian-backports repo. Added a boot script that comments this repo out in the sources file. We don't need it anyway. Increased extruder heater hysteresis from 5°C to 10°C. This should help with the problem where it would throw a temp error when the blower came on when it was close to bed and the air blows back onto the hotend. Improved the end of print macro to use the "keep heating" checkbox setting in Cura LE. KlipperScreen updates: Removed the "Save Z Probe" button at the end of print screen, and changed the "Save Z Endstop" button to just say "Save Z Offset." This will remove confusion about which button to use to save the Z offset. Added the Fine Tuning menu to the More menu, so now you can adjust Z Offset, Flow Rate, and Print Speed, when you are not printing. Changed the QR code on the About screen to link to the new online flip-book Quick Start Guide.