Rat Rig Community [Unofficial]•2y ago

BTT filament sensor

How to connect my BTT filament sensor and what should i do to make it work?

35 Replies

grumpy-cyan•2y ago

what mainboard do you have?

NastyStewOP•2y ago

I have octopus V1.1

grumpy-cyan•2y ago

https://www.makenprint.uk/3d-printing/3d-printing-reviews/3d-printer-accessory-reviews/btt-smart-filament-sensor-guide/

Make 'N' Print

BTT Smart Filament Sensor Guide - Make 'N' Print

A setup guide to the installation of the BTT Smart Filament Sensor. Which detects both broken filament and any stoppages to the filament flow. BTT Smart

grumpy-cyan•2y ago

you connect it to an endstop, you need to rewire it/crimp it

NastyStewOP•2y ago

I have one more question. Do you know what kind of script i need to write in the printer.cfg ?

grumpy-cyan•2y ago

[filament_switch_sensor BTT Sensor] pause_on_runout: True
event_delay: 3.0 pause_delay: 0.5 switch_pin: PG10

NastyStewOP•2y ago

Do i also need to write something on Gcode?

grumpy-cyan•2y ago

nope, do the wiring and add that to printer.cfg

grumpy-cyan•2y ago

after that insert a piece of filament into the sensor, you should see it in the dashboard with detected, when you pull it out should be "Empty"

NastyStewOP•2y ago

Thank you so much for the help, you are a very nice person😁

grumpy-cyan•2y ago

Others are helping me too 👍 switch_pin needs to be your endstop pin, PG10 is my board pin

NastyStewOP•2y ago

Okey 👍

NastyStewOP•2y ago

I dont really know which cable is who?

grumpy-cyan•2y ago

it shows you in this picture, G- ground, S-Signal, V- Voltage On your endstop you have 3V3- Voltage, GND- Ground, PG - Signal. you leave alone the wires in the btt you work on the other side of the cable

NastyStewOP•2y ago

Ok Thanks for the help

sensitive-blue•2y ago

Why would @nastystew not use fialment_motion_sensor? Instead of switch sensor?

grumpy-cyan•2y ago

in my opinion you get false readings with motion sensor

NastyStewOP•2y ago

I got this problem when i start a print

NastyStewOP•2y ago

How do i fix it?

grumpy-cyan•2y ago

post a picture with printer.cfg where you added the code I gave you

NastyStewOP•2y ago

I fixed it already and the problem was the BTT Sensor and i put instead my_sensor and it worked

grumpy-cyan•2y ago

my bad,y you can name it how you want but put a _ between words for example BTT_Sensor

NastyStewOP•2y ago

It’s ok and ill try it. Thanks for the help

sensitive-blue•2y ago

I havent had a single false positive. 🤷‍♂️

grumpy-cyan•2y ago

Not saying it is a common thing , it is only my opinion

eager-peach•16mo ago

would anyone in this thread be willing to help me troubleshoot my btt runout sensor? I keep getting false empty results

eager-peach•16mo ago

from my printer.cfg

eager-peach•16mo ago

Running an Octopus Pro

eager-peach•16mo ago

I can get the sensor to sometimes read "detected" but even with filament loaded it shortly begins reading empty again when changing the sign on the switch_pin, it always reads empty Finally: following the wiring guide, I noticed that the stock wiring for the cable was already correct for my board.

Sky217•16mo ago

I have the same problem! i hate that damn thing. it never worked. i think at this point i will get more satisfaction taking it down and burning it.

SwissStar_BL_2•16mo ago

[filament_motion_sensor encoder_sensor]
detection_length: 7
#   The minimum length of filament pulled through the sensor to trigger
#   a state change on the switch_pin
#   Default is 7 mm.
extruder: extruder
#   The name of the extruder section this sensor is associated with.
#   This parameter must be provided.
switch_pin: PA9
# changing the switch_pin name according to your motherboard
#pause_on_runout: True
#runout_gcode:
#insert_gcode:
#event_delay:
#pause_delay:

[filament_motion_sensor encoder_sensor]
detection_length: 7
#   The minimum length of filament pulled through the sensor to trigger
#   a state change on the switch_pin
#   Default is 7 mm.
extruder: extruder
#   The name of the extruder section this sensor is associated with.
#   This parameter must be provided.
switch_pin: PA9
# changing the switch_pin name according to your motherboard
#pause_on_runout: True
#runout_gcode:
#insert_gcode:
#event_delay:
#pause_delay:

Mine works like a charm with the above code

SYG|Krizalid87•16mo ago

you must insert the sensor into Gcode and a macro when it will be triggered

Sky217•16mo ago

I'll try adding that thank you Could you please show us what we must insert? I have tried a few things but the FS triggers before each print. I tried tuning it off in the gcode in slicer for the first layer but still not working.

Gaming

Programming

BTT filament sensor

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