hillwwl wrote:IT'S RUNNING!!! Well done zhangxueyou!!!! You are the man (or woman)!!!!!! the printer is working brilliantly as is the lcd. I must say, I am quite impressed, you guys do have a great little package here! It still appears that my second extruder isn't being recognized by the lcd nor Repetier, but I'll double check my wiring and get back to you on that. Thanks SO MUCH for all of your help!
Open Repetier-Host 1.0.6, access "Printer Settings":

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Set the amount of extruder, so that you can heat up both extruders in Repetier:

- QQ截图20150526094443.png (29.43 KiB) Viewed 10802 times
But that's not enough, if you want boths extruder work when printing, you need to have correct slicer setting:
Access "configuration" to set slicing:

- QQ截图20150526094538.png (86.4 KiB) Viewed 10802 times
You can download this file to set it: