PRUSA MK2S DUST FILTER/OPTO FILAMENT RUNOUT SENSOR

thingiverse

Human: Engineered for utilization with a simple opto endstop as depicted above. Upper section features a 4mm seating area accommodating a reverse Bowden tube to your spool. Once you have it wired and tested with filament that it senses correctly in the PRUSA LCD menu, secure it into place with hot glue, add a small piece of foam to wipe dust off filament, and begin printing. Information on how to wire the sensor to the RAMBO board can be found here: https://github.com/3d-gussner/Prusa-Firmware/releases Firmware hex is attached, which I modified slightly from 3D-Gussner's version and compiled for the opto sensor to function. The updated firmware contains tweaks for improved performance. Note that the latest changes on TheZeroBeast's GitHub above include menus for enabling and configuring any filament runout sensor from the LCD menu. A note from Gussner regarding the firmware modifications: "The firmware features Advance Linear Integration activated, so please follow the instructions. You may also need to adjust your slicer for optimal results. Additionally, perform PID tuning and PID bed tuning. The firmware includes my default PID settings, which I use with an E3D sock and cork under the heated bed." Linear advance setup: http://marlinfw.org/docs/features/lin_advance.html Key differences between this firmware and the original Prusa i3 MK2 firmware 3.0.12 include: * Linear advance * Serial baud rate set from 115,200 to 250,000 * German translation by 3D-Gussner * Dutch translation by 3D-Gussner * A few English changes * PID calibration menu with eight cycles * PID bed calibration menu modified by 3D-Gussner * PID values for bed saving * Preheat order changed from ABS/PLA/... to PLA/ABS/... * Filament runout sensor switched to pin 24, 'y-max' endstop * Added filament runout status to the 'Show end stops' menu * Under 'Calibration' -> 'Show end stops,' you will find a new FR_S value that should be set to: + 1 when filament is loaded + Flickering between 0 and 1 when filament runs out + 0 if the runout switch is not connected correctly or if all three pins are used, indicating filament has run out * Added more firmware information to the 'Support' menu