Prusa 3.9.0 for RAMPS 1.4 board

thingiverse

# Prusa Firmware 3.9.0 (MK2S) for Arduino RAMPS 1.4 board ##### In my [github repository](#https://github.com/cimoalpacino/Prusa-Firmware/tree/MK2S_3.9.0_RAMPS) (https://github.com/cimoalpacino/Prusa-Firmware/tree/MK2S_3.9.0_RAMPS) you can find and download the source code of a working Prusa 3.9.0 firmware running on an Arduino RAMPS board for my Prusa i3 Bear style 3D printer. ##### The latest official builds can be downloaded from [Prusa Drivers](https://www.prusa3d.com/drivers/). Pre-built development releases are also [available here](https://github.com/prusa3d/Prusa-Firmware/releases). ##### The firmware for the Original Prusa i3 printers is proudly based on [Marlin 1.0.x](https://github.com/MarlinFirmware/Marlin/) by Scott Lahteine (@thinkyhead) et al. and is distributed under the terms of the [GNU GPL 3 license](LICENSE). ##### Please read the whole document, especially the ***Important*** section at the bottom. ## 1. Specs ##### This firmware is configured for a Prusa Bear MK2S fitted with an Arduino RAMPS 1.4 and A4988. ### Power supply * [Original Prusa 12V 240W PSU](https://shop.prusa3d.com/en/mk2mk2s/176-psu-12v-240w.html) ### Motherboard * [RAMPS 1.4](https://reprap.org/wiki/RAMPS_1.4) ### Printer frame * [Prusa i3 Bear Full Upgrade](https://github.com/gregsaun/prusa_i3_bear_upgrade/tree/master/full_upgrade) (MK2S) * [Prusa i3 Bear Printed parts on Thingiverse](https://www.thingiverse.com/pekcitron/designs) (Grégoire Saunier) * [Prusa i3 Bear Printed parts on Github](https://github.com/gregsaun/prusa_i3_bear_upgrade/tree/master/full_upgrade) (Grégoire Saunier) ### Stepper motor drivers * [A4988 (from G3D)](https://reprap.org/wiki/G3D_driver) on X/Y/Z/E axis ### Steppers * **X-axis:** 1.8° motor * **Y-axis:** 1.8° motor * **Z-axis:** 1.8° motor * **Extruder:** 1.8° motor * **Microstepping:** 1/16 ### Heatbed * [Original Prusa MK42 12V with ATC Semitec 104GT-2 thermistor](https://shop.prusa3d.com/en/mk2mk2s/119-heatbed-mk42-12v-assembly.html) ### Hotend * Direct drive E3D V6 clone * 20W 12V Heater Cartridge * EPCOS 100k thermistor * [PINDA V1](https://shop.prusa3d.com/en/mk2mk2s/127-pinda-probe-v1.html?search_query=pinda&results=2) (Reference: REP-PIN-DA0) ### LCD Controller * [GADGETS3D G3D LCD/SD Controller](https://reprap.org/wiki/RAMPS_1.3/1.4_GADGETS3D_Shield_with_Panel) * (optional) [RERAP Discount Smart Controller](https://reprap.org/wiki/RepRapDiscount_Smart_Controller) (can be easily set in Configuration_prusa.h) ### Endstops * **Mehcanical:** X/Y * **Inductive (PINDA):** Z ### Wiring Guide * [Reprap RAMPS 1.4](https://reprap.org/wiki/RAMPS_1.4) * PINDA wiring: | Endstop | Endstop pin | PINDA wire | |--- |--- |--- | | Z-MIN | VCC (+) | Brown | | Z-MIN | GND (-) | Blue | | Z-MIN | SIGNAL (S) | Black | ## 2. Firmware ##### The firmware has been modified in many places and files to get it fully working. ##### All changes are marked with text `/*RAMPS*/`, so it can be easily traced using **Find/Search** option in text editors (or software like Visual Studio or VS Code). ### Features and changes: * added preheat option to preheat only nozzle (for maintanage, for example) * added `Init. SD card` to manually initialize SD card if it fails to load when inserted in SD slot * HW Setup menu changes to `Live Z presets` if a steel sheet is not used, otherwise it shows `Sheets` options * removed Mode menu on LCD (since I use A4988, mode can't be set to silent, power or auto mode) * mesh bed leveling has 3x3 and 7x7 options + magnets compensation * new XYZ calibration * linear advance 1.5 ### Edited files: * boards.h * config.h * configuration.h (check your probe offset settings) * `#define X_PROBE_OFFSET_FROM_EXTRUDER -25` * `#define Y_PROBE_OFFSET_FROM_EXTRUDER -5 //-29` * `#define Z_PROBE_OFFSET_FROM_EXTRUDER -12.35` * heatbed_pwm.cpp * Marlin.h * Marlin_main.cpp * mesh_bed_calibration.cpp (check settings for your setup so that the probe hits all bed points - use Pronterface output to help define the right values) ``` #if MOTHERBOARD == BOARD_RAMPS_14_EFB //MK42 BED //if XYZ calibration fails, check serial output in Pronterface and adjust the values accordingly! 36.5f - BED_PRINT_ZERO_REF_X - X_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_X, //36,5 - 2 - 23 - 0 = 11,5 16.1f - BED_PRINT_ZERO_REF_Y - Y_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_Y, //16,4 - 9,4 - 5 - 0 = 1,7 239.5f - BED_PRINT_ZERO_REF_X - X_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_X, //239,5 - 2 - 23 - 0 = 214,5 16.1f - BED_PRINT_ZERO_REF_Y - Y_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_Y, //16,4 - 9,4 - 5 - 0 = 1,7 239.5f - BED_PRINT_ZERO_REF_X - X_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_X, //239,5 - 2 - 23 - 0 = 214,5 212.4f - BED_PRINT_ZERO_REF_Y - Y_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_Y, //212,4 - 9,4 - 5 - 0 = 198 36.5f - BED_PRINT_ZERO_REF_X - X_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_X, //36,5 - 2 - 23 - 0 = 11,5 212.4f - BED_PRINT_ZERO_REF_Y - Y_PROBE_OFFSET_FROM_EXTRUDER - SHEET_PRINT_ZERO_REF_Y //212,4 - 9,4 - 5 - 0 = 198 #else ``` * mesh_bed_calibration.h (check settings for your setup so that the probe hits all bed points - use Pronterface output to help define the right values) ``` #define BED_ZERO_REF_Y (- 0.6f + Y_PROBE_OFFSET_FROM_EXTRUDER + 2.f) // -0.6 + 5 + 2 = 6.4 #define BED_X0 (13.f - BED_ZERO_REF_X) //13 - 1 = 12 #define BED_Y0 (8.4f - BED_ZERO_REF_Y) //8.4 - 6.4 = 2 #define BED_Xn (216.f - BED_ZERO_REF_X) //216 - 1 = 215 #define BED_Yn (204.4f - BED_ZERO_REF_Y)//204.4 - 6.4 = 198 ``` * pins.h * sm4.c * corrected pinout mapping for motors to reflect Ramps schematics * added function to re-calculate steps if we use different pulleys * swi2c.c * system_timer.c * temperature.cpp * reconfigured timers * redefined old PWM for bed heating * timer02.c: * reused old definition of timer02 * timer02.h: * reused old definition of timer02 * tmc2130.cpp * uart2.c * ultralcd.cpp * Edit parameter `0.f` to a higher or lower value if having problem with Z calibration (line 3524) ``` // increase (+) to go lower, decrease (-) to go higher current_position[Z_AXIS] = Z_MAX_POS + 0.f; ``` * added "Init. SD card" menu option to manually initialize SD card if it fails when inserted in SD card slot * w25x20cl.c * w25x20cl.h * xyzcal.cpp * added bed points for MK42 bed (set X and Y coordinates to fit your bed) ``` #if MOTHERBOARD == BOARD_RAMPS_14_EFB const int16_t xyzcal_point_xcoords[4] PROGMEM = { 1150, 21450, 21450, 1150 }; const int16_t xyzcal_point_ycoords[4] PROGMEM = { 600, 600, 19750, 19750 }; #endif //!MOTHERBOARD == BOARD_RAMPS_14_EFB ``` ### Added new files: * pins_Ramps.h * Configuration_prusa.h ### Pronterface ##### If having problems with calibration when the probe is searching the calibration points, I recommend to use Pronterface output to find the correct values. ## 3. IMPORTANT ##### If your setup is different than mine you have to modify parameters and values to fit your needs. **Use at your own risk!** Before making the inital Wizard calibration, it is mandatory to do a **full factory reset to erase all eeprom and flash data!** 1. Press and hold the control knob 2. Power up the printer by turning the PSU switch on 3. Release the control know when you hear a beep ##### If done correctly, the LCD screen will show a menu with 4 options. - Language - Statistics - Shipping prep - All data ##### Select **All data** and wait for it to complete. ##### After that you can continue with calibration. ##### If calibration fails in many retries, you may have to edit firmware parameters in calibration sections. ##### Whenever a new upload of firmware is done, the factory reset procedure must be repeated! **UPDATES:** 2.6.2020: Added bed dimensions of MK2S that you can use to figure out what numbers to enter in your firmware for a successful xyz calibration and mesh bed leveling. Also included an excel spreadsheet to help you and see how related equations change when you change a parameter. # Enjoy and happy printing! :) https://youtu.be/BbjC9gWVAi0