ProTubeVR-MK3S-MMUv2-MOD-FOR-HEMERA

prusaprinters

<p>This mod combined with the dedicated Firmware mods allow you to fit an Hemera extruder from E3D on an MK3s using MMUv2 upgrade.</p> <p>The mount is rotated 30 degrees to allow the full x-axis carriage travel without the need to move the lead screw, motor, etc.</p> <p>The pinda is in the same location as the original extruder.</p> <p>-This is a rework of the Hemera Mount kit from DarrinBrunner (<a href="https://www.prusaprinters.org/social/40843-darrinbrunner/prints">https://www.prusaprinters.org/social/40843-darrinbrunner/prints</a>)<br/> -It's super usefull to use the selector Mod from 78zero to get a more reliable FINDA reading (<a href="https://www.prusaprinters.org/social/2481-78zeros/prints">https://www.prusaprinters.org/social/2481-78zeros/prints</a>)</p> <p>This is new a mount to attach an E3D Hemera extruder to a Prusa MK3-MMU2 printer. The original interior geometry from the Prusa filament sensor has been incorporated into this design, sourced from Prusa's models.</p> <p>The pinda is in the same location as on the original.</p> <p>The nozzle in this new design sits 10mm further forward along the y-axis (toward the front of the machine), than the original. The x-axis location of the nozzle is the same as the original extruder. The y-axis offset of the nozzle from the pinda needs to be changed from 5 to 15.</p> <p>You can follow this guide to update the firmware:<br/> <a href="https://e3d-online.dozuki.com/Guide/Prusa+i3+MK3+Firmware+Modifications/141">https://e3d-online.dozuki.com/Guide/Prusa+i3+MK3+Firmware+Modifications/141</a></p> <p>Mounting require M3x8 for the Hemera Motor<br/> Others are common M3x10 and M3x14</p> <h3>Print instructions</h3><p>Source code and test build are there :<br/> <a href="https://github.com/ProTubeVR/MK3s-Hemera-Mod">https://github.com/ProTubeVR/MK3s-Hemera-Mod</a></p> <p>Mandatory Firmware mods :</p> <p>Configuration.h</p> <p>Line18 :<br/> // Firmware version</p> <h3>define FW_VERSION "PTVRv0.1_3.9.3"</h3> <p>// BASED ON PRUSA Stock FW 3.9.3<br/> // <a href="https://github.com/vertigo235/Build-Prusa-LA-15">https://github.com/vertigo235/Build-Prusa-LA-15</a></p> <h3>define FW_COMMIT_NR 2500</h3> <p>// FW_VERSION_UNKNOWN means this is an unofficial build.<br/> // The firmware should only be checked into github with this symbol.</p> <h3>define FW_DEV_VERSION FW_VERSION_RC</h3> <h3>define FW_REPOSITORY "ProTubeVR"</h3> <h3>define FW_VERSION_FULL FW_VERSION "-" STR(FW_COMMIT_NR)</h3> <p>Config.h</p> <h3>define LANG_MODE 0 // primary language only (Hemera mod, from E3D Tuto)</h3> <p>//#define LANG_MODE 1 // sec. language support (Hemera mod, from E3D Tuto)</p> <p>configuration_prusa.h<br/> Line22 :</p> <h3>define NOZZLE_TYPE "E3D_Hemera" // Hemera</h3> <p>// Developer flag</p> <h3>define DEVELOPER</h3> <p>// Printer name</p> <h3>define CUSTOM_MENDEL_NAME "ProTubeVR Hemera MK3s" //Hemera</h3> <p>**Line42:<br/> // Extruder<br/> //#define BONDTECH_MK3S<br/> //#define BONDTECH_MOSQUITO<br/> //#define BONDTECH_MOSQUITO_MAGNUM</p> <h3>define PROTUBEVR_HEMERA_MK3S</h3> <p>line49 :<br/> // Steps per unit {X,Y,Z,E}<br/> //#define DEFAULT_AXIS_STEPS_PER_UNIT {100,100,3200/8,140}<br/> //#define DEFAULT_AXIS_STEPS_PER_UNIT {100,100,3200/8,280}<br/> //#define DEFAULT_AXIS_STEPS_PER_UNIT {100,100,3200/8,560}</p> <h3>define DEFAULT_AXIS_STEPS_PER_UNIT {100,100,3200/8,786.5} // (Hemera mod)</h3> <p>Line343:<br/> //#define EXTRUDER_ALTFAN_SPEED_SILENT 128 //(Hemera mod)</p> <h3>define EXTRUDER_ALTFAN_SPEED_SILENT 255 //(Hemera mod)</h3> <p>Line350 :<br/> // Load filament commands</p> <h3>define LOAD_FILAMENT_0 "M83"</h3> <p>//#define LOAD_FILAMENT_1 "G1 E70 F400" //(moded for Hemera)</p> <h3>define LOAD_FILAMENT_1 "G1 E33 F400" //(moded for Hemera)</h3> <h3>define LOAD_FILAMENT_2 "G1 E40 F100"</h3> <p>// Unload filament commands</p> <h3>define UNLOAD_FILAMENT_0 "M83"</h3> <p><strong>//#define UNLOAD_FILAMENT_1 "G1 E-80 F7000" //(moded for Hemera)</strong>#define UNLOAD_FILAMENT_1 "G1 E-50 F500" //(moded for Hemera)</p> <p>Line365 :<br/> // Filament change configuration</p> <h3>define FILAMENTCHANGEENABLE</h3> <h3>ifdef FILAMENTCHANGEENABLE</h3> <h3>define FILAMENTCHANGE_XPOS 211</h3> <h3>define FILAMENTCHANGE_YPOS 0</h3> <h3>define FILAMENTCHANGE_ZADD 2</h3> <h3>define FILAMENTCHANGE_FIRSTRETRACT -2</h3> <p>//#define FILAMENTCHANGE_FINALRETRACT -80 //(moded for Hemera)</p> <h3>define FILAMENTCHANGE_FINALRETRACT -50 //(moded for Hemera)</h3> <p>//#define FILAMENTCHANGE_FIRSTFEED 70 //E distance in mm for fast filament loading sequence used used in filament change (M600)(moded for Hemera)</p> <h3>define FILAMENTCHANGE_FIRSTFEED 33 //E distance in mm for fast filament loading sequence used used in filament change (M600)(moded for Hemera)</h3> <p>Line442:<br/> //#define Y_PROBE_OFFSET_FROM_EXTRUDER 5 // Z probe to nozzle Y offset: -front +behind (Hemera Mod)</p> <h3>define Y_PROBE_OFFSET_FROM_EXTRUDER 15 // Z probe to nozzle Y offset: -front +behind (Hemera Mod)</h3> <p>Line508:</p> <h3>define PLA_PREHEAT_HOTEND_TEMP 220 //ProTubeVR need</h3> <h3>define PLA_PREHEAT_HPB_TEMP 75 //ProTubeVR need</h3> <h3>define PET_PREHEAT_HOTEND_TEMP 250 //ProTubeVR need</h3> <h3>define PET_PREHEAT_HPB_TEMP 90 //ProTubeVR need</h3> <p>Marlin_main.cpp<br/> Line200 :<br/> //int bowden_length[4] = {385, 385, 385, 385}; //Hemera Mod<br/> int bowden_length[4] = {415, 415, 415, 415}; //Hemera Mod</p> <p>Line11609 :<br/> current_position[E_AXIS] += bowden_length[mmu_extruder];<br/> plan_buffer_line_curposXYZE(3000, active_extruder);<br/> //current_position[E_AXIS] += FIL_LOAD_LENGTH - 60; //(mod for Hemera)<br/> current_position[E_AXIS] += FIL_LOAD_LENGTH - 23; //(mod for Hemera)<br/> plan_buffer_line_curposXYZE(1400, active_extruder);<br/> //current_position[E_AXIS] += 40; //(mod for Hemera)<br/> current_position[E_AXIS] += 20; //(mod for Hemera)<br/> plan_buffer_line_curposXYZE(400, active_extruder);<br/> //current_position[E_AXIS] += 10; //(mod for Hemera)<br/> current_position[E_AXIS] += 5; //(mod for Hemera)<br/> plan_buffer_line_curposXYZE(50, active_extruder);</p> <p>Line 11692:<br/> //#define FIL_LOAD_LENGTH 60 //(mod for Hemera)</p> <h3>define FIL_LOAD_LENGTH 23 //(mod for Hemera)</h3> <p>line3243 :<br/> lcd_setstatuspgm(_T(MSG_LOADING_FILAMENT));<br/> //current_position[E_AXIS] += 40; //hemera Mod<br/> current_position[E_AXIS] += 20; //hemera Mod<br/> plan_buffer_line_curposXYZE(400 / 60); //fast sequence<br/> st_synchronize();</p> <pre><code> raise_z_above(MIN_Z_FOR_LOAD, false); //current_position[E_AXIS] += 30; //hemera Mod current_position[E_AXIS] += 13; //hemera Mod plan_buffer_line_curposXYZE(400 / 60); //fast sequence load_filament_final_feed(); //slow sequence st_synchronize(); </code></pre> <p>ultralcd.cpp<br/> Line6427 :</p> <pre><code>// extr_unload2(); //current_position[E_AXIS] -= 45; //Hemera MOD current_position[E_AXIS] -= 20; //Hemera MOD plan_buffer_line_curposXYZE(5200 / 60); st_synchronize(); //current_position[E_AXIS] -= 15; //Hemera MOD current_position[E_AXIS] -= 5; //Hemera MOD plan_buffer_line_curposXYZE(1000 / 60); st_synchronize(); //current_position[E_AXIS] -= 20; //Hemera MOD current_position[E_AXIS] -= 10; //Hemera MOD plan_buffer_line_curposXYZE(1000 / 60); st_synchronize(); </code></pre> <p>mmu.cpp<br/> Line795 :<br/> void mmu_load_to_nozzle()<br/> {<br/> st_synchronize();</p> <pre><code>const bool saved_e_relative_mode = axis_relative_modes &amp; E_AXIS_MASK; if (!saved_e_relative_mode) axis_relative_modes |= E_AXIS_MASK; if (ir_sensor_detected) { //current_position[E_AXIS] += 3.0f; // Hemera Mod current_position[E_AXIS] += 2.0f; // Hemera Mod } else { current_position[E_AXIS] += 7.2f; } //float feedrate = 562; //Hemera Mod float feedrate = 400; //Hemera Mod plan_buffer_line_curposXYZE(feedrate / 60); st_synchronize(); //current_position[E_AXIS] += 14.4f; //Hemera Mod current_position[E_AXIS] += 6.25f; //Hemera Mod feedrate = 871; plan_buffer_line_curposXYZE(feedrate / 60); st_synchronize(); //current_position[E_AXIS] += 36.0f; //Hemera Mod current_position[E_AXIS] += 12.5f; //Hemera Mod feedrate = 1393; plan_buffer_line_curposXYZE(feedrate / 60); st_synchronize(); //current_position[E_AXIS] += 14.4f; //Hemera Mod current_position[E_AXIS] += 6.25f; //Hemera Mod feedrate = 871; plan_buffer_line_curposXYZE(feedrate / 60); st_synchronize(); if (!saved_e_relative_mode) axis_relative_modes &amp;= ~E_AXIS_MASK; </code></pre> <p>}</p> <p>line1057 :<br/> struct E_step<br/> {<br/> float extrude; //!&lt; extrude distance in mm<br/> float feed_rate; //!&lt; feed rate in mm/s<br/> };<br/> static const E_step ramming_sequence[] PROGMEM =<br/> //{<br/> // {1.0, 1000.0/60}, //Hemera Mod<br/> // {1.0, 1500.0/60}, //Hemera Mod<br/> // {2.0, 2000.0/60}, //Hemera Mod<br/> // {1.5, 3000.0/60}, //Hemera Mod<br/> // {2.5, 4000.0/60}, //Hemera Mod<br/> // {-15.0, 5000.0/60}, //Hemera Mod<br/> // {-14.0, 1200.0/60}, //Hemera Mod<br/> // {-6.0, 600.0/60}, //Hemera Mod<br/> // {10.0, 700.0/60}, //Hemera Mod<br/> // {-10.0, 400.0/60}, //Hemera Mod<br/> // {-50.0, 2000.0/60}, //Hemera Mod<br/> {<br/> {1.0, 1000.0/60}, //Hemera Mod<br/> {1.0, 1500.0/60}, //Hemera Mod<br/> {2.0, 2000.0/60}, //Hemera Mod<br/> {1.5, 3000.0/60}, //Hemera Mod<br/> {2.5, 4000.0/60}, //Hemera Mod<br/> {-7.5, 5000.0/60}, //Hemera Mod<br/> {-7.0, 1200.0/60}, //Hemera Mod<br/> {-6.0, 600.0/60}, //Hemera Mod<br/> {5, 700.0/60}, //Hemera Mod<br/> {-5, 400.0/60}, //Hemera Mod<br/> {-50.0, 2000.0/60}, //Hemera Mod<br/> };</p> <p>Line1153 :<br/> max_feedrate[E_AXIS] = 80;<br/> //current_position[E_AXIS] -= (bowden_length[mmu_extruder] + 60 + FIL_LOAD_LENGTH) / 2; //(mod for Hemera)<br/> current_position[E_AXIS] -= (bowden_length[mmu_extruder] + 23 + FIL_LOAD_LENGTH) / 2; //(mod for Hemera)<br/> plan_buffer_line_curposXYZE(500, active_extruder);<br/> //current_position[E_AXIS] -= (bowden_length[mmu_extruder] + 60 + FIL_LOAD_LENGTH) / 2; //(mod for Hemera)<br/> current_position[E_AXIS] -= (bowden_length[mmu_extruder] + 23 + FIL_LOAD_LENGTH) / 2; //(mod for Hemera)<br/> plan_buffer_line_curposXYZE(500, active_extruder);<br/> st_synchronize();</p> <p>Line1467 :<br/> static bool can_load()<br/> {<br/> //current_position[E_AXIS] += 60; //(Mod for Hemera)<br/> current_position[E_AXIS] += 25; //(Mod for Hemera)<br/> plan_buffer_line_curposXYZE(MMU_LOAD_FEEDRATE);<br/> //current_position[E_AXIS] -= 52; //(Mod for Hemera)<br/> current_position[E_AXIS] -= 5; //(Mod for Hemera)<br/> plan_buffer_line_curposXYZE(MMU_LOAD_FEEDRATE);<br/> st_synchronize();</p> <p>Known issue : Unloading LCD and end print request does nothing in the MMU use case</p>