Dual Extruder with fan control on MKS Base V1.4

Hey all, I've been having issues getting my MKS Base to work with dual extruders because it appears the second extruder and the fan both go through the fan pin and just completely ignore that there is an available second heater pin on the MKS base. Is there any way for the MKS Base pins to work as intended with repetier? Any help would be great.


  • I guess you are using RAMPS config and ramps has no extra fan pin. So solution is to not select a symbolic name but the pin number directly that fan has so it does not overlap. The Dxxx are the digital pin numbers.
  • Is there any other configuration that would work better with an MKS Base besides Ramps 1.3/1.4
  • As far as I know there is only the extra fan. MPX3 might be the correct one, not sure. It is also ramps compatible but with fan on D9 and second extruder on D7.
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