Alternative firmware for MKS DLP 1.1/2.0 and soon for Chitu L V3 boards
Using IAR 8.32 with ST HAL library.
Thanks to andryblack, it became possible to build a project for GCC.
Screenshots
Demo video https://www.youtube.com/watch?v=ob9bVc12w_o
- UI display works (ili9488).
- The touch panel works.
- USB works, tested on flash drives up to 32 GB, average read speed ~ 700 KB / sec.
- Finished rendering library of proportional fonts with support for texts in UTF-8 encoding.
- Working file system for USB mass storage.
- Added images for splash, main and service screens. I'm a designer like a sumo ballerina, so it sucks. But I can't get it any better :(
- Completed the basic user interface
- The output of background images is optimized
- Added multilanguage support
- Laid the foundation for a new bootloader
- Fully started the stepper motor. The procedures for working with it are taken from Marlin 1.1.8. All unnecessary was completely cut out, only work with one axis was left. Two classes are used - the scheduler (planner.cpp) and directly working with the motor (stepper.cpp).
Already done:
- Printing .pws files (no anti-aliasing yet).
- Two languages - Russian and English, the ability to add other languages.
- Clock and calendar in the main menu. To keep the time from getting lost when turning off the printer, a 3-volt CR2016 / CR2032 battery must be soldered to the board.
- Manual Z-axis movement in steps of 30, 10, 1, 0.2 and 0.05 mm.
- Zeroing of the Z axis along the upper or lower limit switch.
- Reduced travel speed below 30 mm - to prevent resin splashing.
- Settings for acceleration and speed of movement separately for free movement and for print mode, as well as setting other standard parameters of the Z axis.
- Adjustment of the lower and upper limit switches.
- Setting the software limitation of the minimum and maximum platform lifting height.
- Adjustment of the platform lifting height to pause printing.
- Adjustment of the operating current of the motor up to 1000 mA.
- Mode to reduce the motor current in hold mode.
- Motor current settings for hold mode.
- Setting the time after the last movement of the motor to activate the hold mode.
- Setting the duration of the buzzer for button presses and for messages.
- Adjust the screen flip by 180 degrees.
- All settings can be loaded from the configuration file via the file browser and they are applied immediately. No printer reboot required.
- File browser with two preview modes - icons with a preview of the model or a list with the date and time of file modification.
- Work of the file browser with directories.
- Work of the file browser with cyrillic names of files and directories.
- In the preview of the file before printing, detailed information about the printing modes is displayed.
- Good accuracy in determining the print time of the model.
- Runtime counters of the display, illumination, fan and the printer as a whole.
- Through the interface in the settings screen, you can configure:
- Height of rise to pause printing.
- Enable / disable buzzer.
- Lock against accidental pressing of the on-screen buttons in print mode.
Added/changed:
- Setting the time and date.
- Screensaver with a LCD-like digital clock.
- Motor disable after inactivity timeout.
- Parameter in config file for setting the time for the screensaver to turn on.
- Parameter in config file for setting the time for the motor disable.
Added/changed:
- Added print progress to screensaver.
- The process for printing with antialiasing has been prepared.
- Fixed initialization of 2k display.
Added/changed:
- Complete antialiasing support.
- Added processing of individual layer parameters.
- UV test function completed.
Added/changed:
- Add current height in printing progress.
- Automatic exit from screensaver mode at the end of printing.
- Fixed UV-LCD initialization.
- Now, when switching to a screensaver, power consumption is reduced as much as possible, to less than 0.8 watts.
Added/changed:
- Added support for .photon and .cbddlp files.
- Added settings for the platform lifting height at the end of printing (in Settings menu and in config file).
- Added file deleting in file preview screen.
Added/changed:
- Added changing parameters during printing - exposure time, elevation and lifting speed, etc.
Added/changed:
- Added total printer on time counter.
- Fixed several errors that appeared when compiling with maximum optimization.
- Fixed a bug due to which the acceleration settings were not applied without rebooting.
- Fixed bug in implementation of low-level functions for FatFS in SPI-flash.
- Fixed work of the firmware together with the original bootloader.
- Fixed reading of configuration files when they start with an encoding identifier (UTF-8 Big Endian or Little Endian).
- Runtime counters are saved every 60 minutes.
Added/changed:
- Fixed errors with antialiasing in .cbddlp and .photon files with version 3.
Added/changed:
- Added the ability to connect an external clock DS3231. The firmware uses this clock to get the current time and date. You can enable or disable the use of an external clock in the configuration file.
Added/changed:
- Added three-point touch sensor calibration.
- Changed "Service" menu.
- The read and display time of the layer is optimized from 0.51 to 0.36 sec.
To do in the near future:
- Upgradeable bootloader and firmware.
- Runtime counters reset.
- Lifting platform request after Z=0 setting.
Added/changed:
- Added support for board version 2.0
- Added firmware update manual
To do in the near future:
- Upgradeable bootloader and firmware.
- Runtime counters reset.
- Lifting platform request after Z=0 setting.
Added/changed:
- Fixed a bug due to which the platform, after the end of printing, could go down, not up.
- The algorithm of platform movement during printing has been changed: now the platform stops after lifting and the beginning of its lowering are performed with the acceleration of idle movements. Accelerations when lifting from the film and when lowering to it are still taken from the print acceleration settings. This makes it possible to reduce the time required to raise and lower the platform, and thus the printing time, without any deterioration in print quality.
To do in the near future:
- Upgradeable bootloader and firmware.
- Runtime counters reset.
- Lifting platform request after Z=0 setting.
Added/changed:
- Fixed a bug in which the homing from the maximum height was interrupted by the switch error.
- Fixed a bug with homing after interrupted printing.
- Changed function of updating configs after firmware update.
- Added motherboard fan control parameter in config file
- Disable fans when printing is paused.
- Added switching of the time display during printing when you click on the information area: the total estimated, remaining, and absolute time of the end of printing (that is, if at 10 am you started printing a file with a duration of 4 hours, it will show 14:00).
- Lift height on pause and at the end of printing has been added to the print settings menu.
- Acceleration added to print settings menu.
- Added automatic platform lifting (with confirmation request) after setting Z=0.
Added/changed:
- Added platform lift after calibration (Z = 0) if the user agrees. The lift height is set in the settings via the configuration file.
- Added a linear decrease in exposure time from base layers to normal. In the configuration file, you can set the number of layers (number of steps) during which the exposure time decreases after the base layers.
The essence of the linear decrease in exposure time is shown in this picture:
Added/changed:
- Work has begun on adapting the firmware for Chitu L V3 boards. At the moment, the work with UV display has not yet been implemented, but everything else is already working.
Versions up to and including 0.07 contained a critical screensaver bug. Therefore, the binaries in the releases were replaced with new ones, in which this bug was fixed. Because of this, the binaries do not match the sources saved at the time of the release of these versions.