filament runout

Hi, have just received a filament runout sensor from ebay but not sure about the set up, Got these instructions, but do not understand them, any help would be appreciate

Instruction:
1. When you are using a Lerdge brand motherboard: The green light on the motherboard will turn off when the filament runs out, the motherboard will pause printing until you supplement
the filament and continue printing. (Please connect to the M-sensor Interface)
2. When you are using other brand motherboard: The Detection Module uses the level transition detection method. While there still have filament in the module, the detection port
shows as high level; when there is no filament in the module, the detection port will transform to low level as "Filament Run Out Command" which will pause the printing, so you will
have time to supplement the filament and continue printing.

so one of these then? [www.ebay.com]


so what controller do you have and do you have the firmware?

Edited 1 time(s). Last edit at 12/17/2018 06:05AM by Dust.

Yep that's the one.
Controler is Marks Gen 1.4'
Not sure what firmware you are speaking of'.
I have Marlin loaded and printer is working.

You need to modify your firmware

find in Configuration.h //#define FILAMENT_RUNOUT_SENSOR and enable it by removing the //

Add the line "#define FIL_RUNOUT_PIN 4" after the line "#if ENABLED(FILAMENT_RUNOUT_SENSOR)"

Where 4 is the IO pin you use.

take a look at



Its meant to plug into the servo pins, but the wiring looks wrong for your board.

At the bottom is 4 sets of servo pins, the last one being pin D4

In theory you need to make the black wire go to gnd, the red wire go to 5v and the white wire go to D4, but I don't have one of these to actually try it.

Edited 1 time(s). Last edit at 12/17/2018 05:39PM by Dust.

Thanks Dust