[Source firmware code for UM2X dual extruder?]

I have a dual extruder upgrade on my 2X and have found firmware code (compiled) in the Cura director for dual extruder BUT it's got the left extruder motor going backwards as I have done the extruder upgrade. I am trying to find the source code for this but can't seem to and am not sure how to edit the compiled "hex" version.

Also, what "board type" is used in the Arduino IDE when uploading firmware to the UM2?

[Dual Nozzle Ultimaker 2]

Hi, guys!

I'd like to share my experience in double extrusion on Ultimaker 2. Maybe it will be useful.

Ok. Several month ago i bought Ulticreatr 2X. I knew it was not good (according to some replies here), but desire to upgrade my printer and to make double coloured print prevailed. After it was delivered, I decided to postpone installation. Designers of the Ulticreatr 2X said that its feature didn't allow to use heated bed. So, i decided to study this problem first.

I don't want to describe all my way to double extrusion. It was thorny. Besides heated bed issue, neither firmware nor Cura modifications, presented by Ulticreatr 2X designers worked.

So, I searched decisions in the community. And I have found it.

The first it was firmware. Tinkergnome, thank you very much for your work. It is extremely useful and works excellent!!!

The second was slicer. I tried to modify Cura 2.3.1 as it was described by Ulticreatr team, but it was all for nothing. Then I tried to modify it according to this topics, but still without success!

And then, thanks to Crema I tried Cura 15.04!

Today I printed my first double colloured model!

 

 

So, Ultimaker 2 + Ultikreatr 2X + Tinkergnome firmware + Cura 15.04 = Dual extrusion

Thanks everyone!

 

Thanks a lot for the post and info.

One thing I'm wondering about is how to get the nozzles even with regard to the build plate?

[Ultimaker 2 Dual extruder upgrade - Creatr XLabs]

So how do we buy it? Also, since the Ultimakers are single nozzle, how is the hardware and software going to be able to control this?