Welcome to the SeeMeCNC Community

Has anyone been successful getting the dual extruders to work? I just started to set mine up but running into some issues

1)The second hot end only turns on if I change the temp via the LCD extruder--> temp 0...then it will also change the temp of temp 1
but it will just keep on going past the desired temp and keep on climbing and with my new heater cartridge it got up there hella fast?

2) The second extruder doesn't move at all when pluged into the E1 motor plug on the rambo but tested it in the E0 plug and it works fine


In config h within the new repetier firmware I set the following
#define NUM_EXTRUDER 2
#define EXT0_TEMPSENSOR_TYPE 1?? = using the m3 screwin thermistor that states it is an EPCOS B57560G104F NTC 100K
Should this be 97 or was that only the ones supplied by SeeMe?

I'm using the hot end adapter that came with the kit
#define EXT0_X_OFFSET -7.5
#define EXT0_Y_OFFSET -12.5

#define EXT1_TEMPSENSOR_TYPE 1?? = using the m3 screwin thermistor that states it is an EPCOS B57560G104F NTC 100K
Should this be 97 or was that only the ones supplied by SeeMe?

#define EXT1_X_OFFSET -7.5
#define EXT1_Y_OFFSET 12.5

EEProm overides the offset so I changed it to the steps I think?? Extr1 x-offset = -7.5 * 80 = -600
Extr1 y-offset = -12.5 *80 = -1000
Extr2 x-offset = -7.5 * 80 = -600
Extr2 y-offset = 12.5*80 = 1000

I also changed all of Extr 2 settings in EEProm to match Extr 1... now whether this was the right thing to do I have no clue. It seemed to me that it should match but it was just a guess. The defualt values came in as -1 or nan

Any help would be much appreciated!!

Are you using Marlin or Repetier firmware?

626Pilot wrote:Are you using Marlin or Repetier firmware?

Repetier

I do not believe that the EEProm settings should be entered any differently than the firmware settings. I do not think you need to do a conversion, just enter the distance. Everything else is a direct replacement for the variable in the firmware right?

I have the same problem. When I switch extruders in Repetier the new extruder gets into position, but commands to extrude/retract filament or to heat it are not working. LCD panel will register that I have requested the change in temperature but RAMBO will just not act upon it.

There is an offset in the slic3r configuration that compensatesd for the offset of the second extruder, you guys have the distance set correctly right?

I was informed that the motor current needed to be set for the second extruder with the variable
#define MOTOR_CURRENT {195,195,195,195,0} // Values 0-255 (RAMBO 135 = ~0.75A, 185 = ~1A)
I'm under the assumption that the , 0 should be changed to 195 but not 100% positive.
Let me know if this works as I was waiting for my new dual hotend adapter from trick laser to try it out.... also Im doubting this will solve the heating issue

That is correct. Also both values for the offset are in steps, the EEProm just tells you that it is. If you are using Poly's version of Repetier there is another change that needs made, but I'll let him tell you that.

foshon wrote:That is correct. Also both values for the offset are in steps, the EEProm just tells you that it is. If you are using Poly's version of Repetier there is another change that needs made, but I'll let him tell you that.

I'm using the repiter firmware provided by Seeme's download page. I'm a little confused by your statement.... the way I saw it was that the offset in config h was in mm's and the offset in EEprom was in steps? Are you saying they are both in steps?

Also is the other setting for the second heater??? Don't hold out bro....As i'm really want to be able to use different support material and my second EZ setup is feeling neglected

The change required in my firmware should not apply to the SeeMeCNC firmware, basically I map the second extruder output as a hotend fan, and that change needs to be undone, as far as I know John doesn't do this.

This is definitely one for an official doc: Here is what I know works to get dual extruders going.

Anyone?

Polygonhell wrote:The change required in my firmware should not apply to the SeeMeCNC firmware, basically I map the second extruder output as a hotend fan, and that change needs to be undone, as far as I know John doesn't do this.

Thanks for the input Polygon!

Ah, thank you so much, #define MOTOR_CURRENT {195,195,195,195,195} worked like a charm. Now only if I can solve heating...
I see that file pins.h has #define HEATER_1_PIN -1 //7 , which clearly won't work, but it doesn't work with 7 either. Still feel much better that at least it is extruding now...

Got heat to work.
Change #define EXT0_EXTRUDER_COOLER_PIN 7 to
#define EXT0_EXTRUDER_COOLER_PIN 8
It wass done so you can control PEEK fan and object fan separately, but I need a second extruder more than that feature
In recap:
configuration.h changes
#define MOTOR_CURRENT {195,195,195,195,195}
#define EXT0_EXTRUDER_COOLER_PIN 8

pins.h changes (under RAMBO settings)
#define HEATER_1_PIN 7

Neochrome wrote:Got heat to work.
Change #define EXT0_EXTRUDER_COOLER_PIN 7 to
#define EXT0_EXTRUDER_COOLER_PIN 8
It wass done so you can control PEEK fan and object fan separately, but I need a second extruder more than that feature
In recap:
configuration.h changes
#define MOTOR_CURRENT {195,195,195,195,195}
#define EXT0_EXTRUDER_COOLER_PIN 8

pins.h changes (under RAMBO settings)
#define HEATER_1_PIN 7

F*** YEAH! I'm mounting them up tonight with the stock mount and will re-cal again next week with the other mount!
How was your leveling? Mine = not so good.... tried leaving the second one on when I failed the first time and it kept running into my prints and ripping them off... I don't even care at this point as I'm bout to be eating a printed chocolate and vanilla soft serve on my Rostock MAX!!!

Doing my first dual extruder print right now, but leveling seemed to be OK. I had to mount extruders from underneath (something like this: http://forum.seemecnc.com/viewtopic.php?f=54&t=1125) and it kind of fit nicely level wise. Still waiting for fans from E-Bay, I think I will have to use same fans for both PEEK and object cooling though.

Neochrome wrote:Doing my first dual extruder print right now, but leveling seemed to be OK. I had to mount extruders from underneath (something like this: http://forum.seemecnc.com/viewtopic.php?f=54&t=1125) and it kind of fit nicely level wise. Still waiting for fans from E-Bay, I think I will have to use same fans for both PEEK and object cooling though.

I had to mount mine from the bottom as well, you using the stock mount plate?
I just ordered this one http://tricklaser.com/Dual-hotend-adapter-RM-DHA.htm as its on sale, I also grabbed a set of the carbon spacers to save some weight with the second hot end on board

Are you using the second matl as support/perimeter or infill/ perimeter? I'm going for the support first with some HIPS. Ever since I saw the stratasys at the tool show printing a raft layer with material that then gets "Washed" away I have been wanting to do the same... not a fan of plucking support off of prints that never really clean up well

Yeah I am using stock adapter and it works fine, distance is also 25mm which works nicely to 1000 steps in each direction. Also using HIPS for support as it was on sale at FILACO. Ran into some minor problems, slic3r for some reason always prints skirt using extruder1, which is kind of anoying if you are trying to calibrate temperature and so on for extruder2 and you need to heat extruder1 as well. Also, I need an object fan (why is it taking so long, sigh) because if let's say I have both extruders heated up then the head that is not printing but moving just above the layer that is printed is causing some melting in spots.

Got mine up and running as well and trying to do the auto-tuning at the moment...I'll report back what I find... running multiple test to see what the difference is with having both cold.. one hot on not etc....
You may be able to use a reg fan in the mean time.... most the time with ABS (which I'm assuming your using with HIPS) I can just use my exhaust fan on high and creates enough draft... found if I had a direct fan that the layers would separate... on PLA though I found I always need a fan

Thanks for finding that pin setting as that made this all come together!

Thank you as well for that motor current setting, I would have hard time finding that one out.

First Print = different support
https://www.youtube.com/watch?v=y5EwPDhGvxs

Second print = different infill
https://www.youtube.com/watch?v=-zenMXUIdOc

?wasn't sure on how to get the [youtube] to work?

[youtube]http://www.youtube.com/watch?v=y5EwPDhGvxs[/youtube]

Just put the entire youtube url in between the tags. But if its a https, change it to http.

Bitchin

As a heads up.... -I placed a line in Slic3r's start G-code to drop the hot ends 20mm after homing all axes. This is so that it can change between extruders with out the height getting all messed up. Other wise it was changing the extruders at the home postion which would not allow for proper z height change and it would hit the bed when running an actual program= not good

LorenOlepi wrote:First Print = different support
https://www.youtube.com/watch?v=y5EwPDhGvxs

Did you try dissolving the HIPS with limonene yet?