@cglass17 The electronics can mostly handle it. What you definitely need to swap is anything that is voltage-specific, i.e. heaters (bed and hotend) and fans. For the latter you could go with buck-down converters but I would not try this with heaters (even though there are high-current buck-downs but they cost about the same as a new heater so why going the workaround-route?!).
@dc42 said in 5 Hotends:
.........................Caveat: in firmware 2.03 there is a limit of 4 heaters per tool, but I can increase this if I know that you need more.
Off topic as far as the OP is concerned but I could foresee a need to have up to 8 heaters fpr a single tool. That's extreme I know but I have my reasons why that might be necessary. Up to 6 heaters is more likely but 8 could be a possibility. I have lots of work to do before I'll know for sure so no hurry.
@danal said in Soldering connectors vs crimping...:
Solder on a twisted wired end placed in a screw terminal is a HUGE no-no. The solder WILL creep over time, thus loosening the connection and starting the heat/loosen/more-heat cycle that leads to burned up connectors.
Screw Terminal? Bare twisted wire or crimp (usually "bootlace"). NOTHING else, period, end of story.
Solder two wires together? Fine. Just no screw terminals.
@kimberly said in Soldering connectors vs crimping...:
just a note..
If you solder on wire going to a screw connector the mechanical pressure will compress the solder overtime. and will eventually get loose..
better go with crimped and then solder (solder the wiren in the crimp) or pure wire
Wise words from @Kimberly
I failed to mention the basics:
Firmware Version: 2.02(RTOS) (2018-12-24b1)
Web Interface Version: 1.22.6
This is an IDEX sort of mechanism with 2 independent X drives on a moving Y gantry.
There are external stepper drivers Wantai DQM542 and the motors are big Nema23's with part number 23HS45-4204S.
I replaced the Arduino/ramps hardware with the Duet board, and replaced the overstuffed direct-wired electronics cabinet with a larger industrial enclosure.
Sorry to resurrect this old topic but I just wanted to report back that the latest beta firmware (2.03 beta2) allows mapping of end stops which has solved the issues I had with trying to home the 3 gantry - oh and it isn't necessary to create WA axes or any new new kinematics class either.
In summary, I've re-purposed 2 of the 5 extruder drives for now and config.g has the drives mapped thus:
M584 X0:3:6 Y1:4:9 Z2 U10 V11 E5:7:8 P3;
Then to home XYU and V, the drives gets remapped thus:
M584 X0 U3 Y1 V4 P5;
Note the XY and UV gantries are joined by Bowden tubes and cables so have to be course home concurrently, then fine homed separately. But maybe, with the latest firmware, this could possibly be accomplished without creating U and V - I'll have to think that through...
Anyway, once XYU and V have been homed, then the drives are mapped again thus:
M584 X6 Y9 ; map upper motors to X and Y
and the end stops mapped as follows:
M574 X1 S1 C5 ; map end stop 5(E2) to X axis
M574 Y1 S1 C6 ; map end stop 6 (E3) to Y axis
At this point the upper gantry effectively becomes X and Y and is re-homed. Once that is done, the motors and end stops are all mapped back to their starting configuration making it effectively a 3 axis machine and then Z is homed.
It's quite a complicated homing file because I'm effectively doing a fast(ish) course home, followed by a slower fine home of 7 axes. Also, I heat the nozzle because I use that as probe and need to soften any plastic that may have oozed, and I lower the motor currents and do some other stuff as well. The whole thing is here if anyone is interested.
Thank you both for your help so far. I'm able to manually home with both of your suggestions, and have found that the reason for the separate moves on the Z motors was due to the motors moving out of sync. Upon moving in the Z direction one motor moves ahead of the other, causing the X gantry to come down on one side; then the other motor follows. Below is a quick photo of my printer. Do you think my issue is because of the Z motors being placed in different positions, or could it still be a configuration issue?
Thanks so much for helping me get this off the ground.
I figured it out! My Z leadscrew steps per mm were completely incorrect. The firmware was set for 5mm leadscrews & needed to be manually adjusted before uploading to the RAMPS board. Sorry for taking up your time. I appreciate your help though. Now on to configuring the BLTouch...