Marlin 2.0.0.bugfix for GT 2560 (Geeetech, CTC and more...)

thingiverse

Hello, update of June 7, 2019. A new build is available for Gt2560. Unfortunately, I have not been able to thoroughly test it due to a hardware problem with my printer, but it seems to work well. I also leave beta4 on this page, which is the previous version, so you can go back if beta6 does not work properly. March 31, 2019 New! Manual bed leveling has been added. Now from the menu, you can level the hotbed to your liking even if your printer does not have a Z-axis level sensor. March 29, 2019 NEW! Marlin 2.0.0 now works and can be used daily, but with caution. Now it works correctly: * Nozzle Parking: The nozzle is parked and raised 30mm. * Filament Change (fixed for Bowden systems with 50 cm of teflon tube, but can be changed). * Power Loss Recovery: It works and allows you to resume from the point where the print was interrupted. However, there's a problem. It only works once, so if you're printing a piece and the power goes out, you can resume perfectly, but if it goes out again, it won't work. This firmware is version 2.0.0.bugfix for gt2560 8-bit cards. It has been tested on gt2560 rev.a, but it should also work on other cards with minimal modifications. To change the length of the Bowden extruder tube, you need to modify the following variable in Configuration_adv.h: #define FILAMENT_CHANGE_UNLOAD_LENGTH 500 For direct drive extruders, put: #define FILAMENT_CHANGE_UNLOAD_LENGTH 50 CAUTION! My printer has 16-tooth pulleys, while the original had 20-tooth pulleys. If your printer has 20-tooth pulleys, you need to modify the Configuration.h file: // ctc prusa i3 with pulleys 20 theet #define DEFAULT_AXIS_STEPS_PER_UNIT {80.10, 80.10, 2580.64, 105.0} // remove this line // ctc prusa i3 with pulleys 16 theet //#define DEFAULT_AXIS_STEPS_PER_UNIT {100.07, 100.07, 2580.64, 105.0} // add two lines to this line BELOW is Old, left for historical reasons ------------------------------------ This is the version of marlin 2.0.0 configured for ctc i3 prusa. It's an alpha version that's not ready for everyday use. It works: * SD card * Display 4x20 characters * New menu "prusa" style * It prints! It does not work: * Pause (Z-axis are blocked) * m600 (filament change) for the same reason as Z-axis lock * power_loss_recovery (software) the nozzle moves to auto-home, it heats up, but when it re-prints it does not change the height of the Z-axis (it seems that everything depends on the same error) In the zip you can find the original marlin 2.0.x and my modified version for GT2650 (tested in rev.a). This should also "work" on any arduino Ati mega 2650 + ramp1.4. I hope the stable release of marlin 2.0 arrives soon!