Arduino with 3 extruders and one hot-end

I have one hot-end with 3 extruders, and if I want to extrude only one of them with a command from the computer, I select the extruder I want ( 1, 2, or 3) but all 3 are extruding in the same time, the same length, like the same command is sent to all 3 motors.
I have an Arduino due board and a RADDS extension for 6 motors + RADDS LCD 
What can I do?


  • I found the problem : in "Configuration.h", mixing-extruder must be off...
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