Fan And second extruder will not work

dmkmedia

I have an MKS GEN 4 board with DRV8825 drivers and using the repeater firmware I can not get the extruder nozzle fans to work nor can I get the second hot end to heat up I am using the default pins for the second hot end but to no avail, it will not power up the hot end.

i can get a temp reading from it but that's it

Repetier

I think you have the pin id's wrong. Please set them explicitly as digitital output x especially if you are using the RAMPS board definition. This is where they differ and setting them explicitly to correct value should help.

dmkmedia

do you know what the pin numbers are ?

RAyWB

https://www.banggood.com/de/MKS-Gen-V1_4-3D-Printer-Control-Motherboard-Compatible-RepRap-Ramps1_4-p-951136.html

RAyWB

http://reprap.org/wiki/File:MKS_GEN-PIN.PNG