Not sure which version of Marlin you are using... Later versions you set up dual Z in Configuration.adv.h I am not totally sure how the Megatronics board is wired to know which pins are wired to the stepper driver.. With the Ramps board I am using, there are only 5 stepper drivers, normally 3 for XYZ axis and 2 for extruders (E0 & E1). What happens you use the second extruder for the seby RepRot - Firmware - mainstream and related support
May pay to double check the following in Marlin. I am using a Ramps board and using dual steppers. Also have dual Zmin end stops and one ZMax stops which allow both of the two steppers to home if they get out of sync. Had to change some of marlin code to get it working. Note: As below you should be able to see that defining Z_DUAL_STEPPER_DRIVERS then sets the E2 driver signals to the Z2 drivby RepRot - Firmware - mainstream and related support
I like using braid and spilt tubing but with - Tesa 51608 19mm x 25m Adhesive Cloth fabric Tape Cable Looms Wiring . The Tesa tape can be purchase from Ebay. Tesa tape is not a PVC product like insulation tape. Its a little hard to remove, usually you have to cut it off wires and it doesn't go sticky or fall off. It also good for car wiring looms etc. Other option is using Velcro to keep wiby RepRot - CoreXY Machines
I worked with Automatic cash machines for years, we had issues with EMF noise being generated by stepper motors from within the ATM's. It was always a requirement to use shielded USB cables within the ATM as well as shielded ethernet external cables. Often a ATM would go for years and then you would end up with intermit problems when someone had installed non shielded Ethernet wiring in a buildby RepRot - General
Hi, Have you slowed down your acceleration rate? While max z velocity is one thing its more about the rate you accelerate to get to a max figure. Hopefully you have adjusted the stepper driver pot to see if increasing current still causes your stepper motors to loose steps, generally stepper drivers will start to overheat and shut down being run at max amps. Also make sure that there are no jamby RepRot - Firmware - mainstream and related support
Hi, I have just upgraded my CoreXY machine to have two stepper motors for the Z axis. I wanted to be able to auto sync both of the Z stepper motors when homing. I used my unused Extruder stepper (E2) stepper driver for the Z2 motor and added a homing switch for the Z2 motor. I activated the Z_DUAL_STEPPER_DRIVERS, Z_DUAL_ENDSTOPS and assigned pin numbers for both the second Z stepper driverby RepRot - CoreXY Machines
Hi, I have just upgraded my CoreXY machine to have two stepper motors for the Z axis. I wanted to be able to auto sync both of the Z stepper motors when homing. I used my unused Extruder stepper (E2) stepper driver for the Z2 motor and added a homing switch for the Z2 motor. I activated the Z_DUAL_STEPPER_DRIVERS, Z_DUAL_ENDSTOPS and assigned pin numbers for both the second Z stepper driverby RepRot - Firmware - mainstream and related support
I have read there is a problem that if you use filament out when printing from serial/usb that the host PC will time out after a while as your printer can't send a stop signal back to the PC. Haven't had time to test this yet. Don't know if once you get filament out and you then pause the PC . I using ponterface whether this will not cause the PC to time out.. As far as I see it that if you ruby RepRot - Firmware - mainstream and related support
Hi, I am using Marlin Version 1.1 Dev Didn't have any problems with complying, but did have an issue with not being able to restart after detecting out of filament. Wouldn't recognise pressing the LCD knob, just flashed and made a crooking sound from the LCD beeper. I use a CoreXY with a REPRAP DISCOUNT SMART CONTROLLER Ended up commenting out the below ... if (++cnt == 0) lcd_quick_fby RepRot - Firmware - mainstream and related support
First thing I found was to place your printer on some good blocks of soft foam, I found this reduced a lot of vibration that was being heard. Amazing how vibration travels about. The next thing is to play around with the stepper current settings and also the acceleration settings. I think this is your real problem. Went down the same route myself. I think you can have issues with setting the aby RepRot - CoreXY Machines
Hopefully it shouldn't be too much of a mission As I see it.... Filament change - M190 - Sxxx Wait for bed current temp to reach target temp. Waits only when heating M600 - Pause for filament change X Y Z E L Press LCD knob to allow LCD menu (feed and retract filament and Exit menu's only) to be used to feed new filament in. (Menu needs to be created) After changing filament Select menu tby RepRot - General
In regards to changing filament, I have been playing around with Marlin 1.1 DEV, the only thing that I seen is the filament run out feature. Basically when printing from a SD card you have a switch wired in to an I/O which when the filament runs out it activates a Gcode of M600. This then causes the Z , X and Y axis to be moved to a preset postion which you can set, also filament can be pulledby RepRot - General
Great looking build, How stable is the print bed being canti-levered? I built a CoreXY using 15mm Aluminium extrusions very similar design. Have found the print bed does flex a little, still prints OK but would like it more stable. I think the flex is from the 2 x 8mm shafts that I used as well as the arms that support the bed. Did use a 3mm thick heat treated piece of glass, couldn't get aby RepRot - CoreXY Machines
I found Pronterface only goes to negative positions when homing (Home position set as a negative position). On manual moves with Pronterface Move (e.g. 0.1mm or greater) it moves out of the negative to the 0.1mm position and won't move back into the negative area again unless you do a home. Also you can't move into an area that's greater than what you have set in firmware as your max positionby RepRot - Firmware - mainstream and related support
Hi, I am using a CoreXY configuration and have the X and Y home (min) set to a negative position. Only set at -5, the reason was that I did this is that I found that setting it at 0 was that when you home the carriage it moves slowly until the switch (using a microswitch) makes contact, but when printing at speed I was getting a false switch activation as the switch arm gets flicked before theby RepRot - Firmware - mainstream and related support
In reference to the settings ... this was part of other communication to other settings .. need to read the full posting. You need to set the XYZ min and Max settings as required e.g. not as below. Be aware that the X and Y Min POS value may need to be set as a negative value and the XY POS max to a higher value to the print area to stop limit switches being activated by switch bounce. Lineby RepRot - General
May pay to checkout Openbeam extrusions.by RepRot - General
Thanks for the info Alan, I am currently using a 5.3kg.cm extruder motor which seems to have plenty of grunt on my Openbeam CoreXY printer.. Sticking with the 0.3mm nozzle as I already have a printer that uses a 0.4mm nozzle that I designed and built a few years ago. - check is one...... This has been a very reliable printer, used a makerbot hotend. Have done a lot of printing with no realby RepRot - Look what I made!
Hi Alan, I built my own Bowden extruder feed assy, milled it out of a piece of Aluminium ex-hard disk drive actuator ( Once they made large disk drives with 18" platters.... which I repaired. -Stuff I did 30 years ago .. I am a bit of a junk collector for aluminium bits). Have a attached a picture of my design. I used a 6mm dia feed gear, however I am not totally happy with it, just orderedby RepRot - Look what I made!
Hi Alan, I also just fitted a fan duct and a LED print light to my Openbeam CoreXY. Good to see the print clearly when printing at night. great minds think alike..... I have also added a extra cooling fan for cooling the heat bed down quickly, don't always use it with the Gcode at the end of the print. But have added an Icon in Ponterface which allows me to turn it on or off. Also have a firmby RepRot - Look what I made!
My first Reprap that I built about 6 years ago used 2 stepper motors for the Z axis. ---- It used a Arduino Mega but not a Ramps board. Each of the two Z stepper motors have their own LED home sensors as well as separate stepper driver boards. An additional PCB is used to allow these two Z stepper motors to auto synchronize when being sent to their home position. Basically the stepper mby RepRot - RAMPS Electronics
Swiss clips may be an option.. like these.... A lot of picture frame supplies have them, they come in several different sizes. 11mm , 7.5mm, etc. cheersby RepRot - Printing
Very nice design Alan, a good layout and wiring has been done well. Bruceby RepRot - Look what I made!
As per the attached picture, used polycarbonate for the block but you properly can use other materials even 3D print them. Shaft is a 6mm dia which has been turned down in a mini lathe to fit the 5mm bearings. Used toy helicopter bearings from Ebay 10mm (outside dia) x 5mm (inside dia) x 4mm (wide). The 2 blocks simply squeeze the bearings into the hold position. Loosen the screws and yby RepRot - CoreXY Machines
I agree with Alan in regards to not getting carried away thinking that CoreXY will give you faster print times with having a low mass head assembly. You can only push though filament at a maximum rate with a hot end. However with less head assembly mass you can have more acceleration and de-acceleration to reach maximum speed. Its may not be a lot but good direction to head for. Also less movingby RepRot - CoreXY Machines
Hi, May pay to check this in Configuration_adv.h Line 90 - have the following inactive e.g.. //#define ENDSTOP_ONLY_FOR_HOMING Line 312 - you may wish to have this active if printing from SD cards e.g. #define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLE (Need to enable from LCD to stop printing if wanted for every time you go to print something).by RepRot - Firmware - mainstream and related support
I built an eggbot about a year ago to print onto golf balls using an Arduino Uno microprossor.. I made the following notes, hopefully they may be of help and don't have too many errors... ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ I had a couple of spare (200 stepby RepRot - General
I use it under my heat bed which means it on top of the aluminium plate. I have my glass (which I print on) on the heat bed, why waste heat to heat the aluminium plate. It also means it takes longer to get up to temperature. It may depend on your type of construction, I use it on a CoreXY machine. Just giving other possibly options.....by RepRot - General
I use it under my heat bed which means it on top of the aluminium plate. I have my glass (which I print on) on the heat bed, why waste heat to heat the aluminium plate. It also means it takes longer to get up to temperature. It may depend on your type of construction, I use it on a CoreXY machine. Just giving other possibly options.....by RepRot - General
I use it under my heat bed which means it on top of the aluminium plate. I have my glass (which I print on) on the heat bed, why waste heat to heat the aluminium plate. It also means it takes longer to get up to temperature. It may depend on your type of construction, I use it on a CoreXY machine. Just giving other possibly options.....by RepRot - General