How to set up the Bigtreetech SFS v2 on Klipper

Keep your 3D printer safe with this beautifully simple device. The SFS v2 by Bigtreetech. In this video I dive into Bigtreetech's new smart filament sensor. You will learn how it works and how to set it up with Klipper firmware.
Check out this video's sponsor PCBway - pcbway.com/g/08Zx0p
** Affiliate links to help the channel out **
BTT Pi - shrsl.com/47lv8
All the Bigtreetech and BIQU stuff to mod your 3D printer - shareasale.com/r.cfm?b=189092...
00:00 - Intro
00:38 - Let's get inside
05:19 - wiring it up
13:27 - PCBWay!! Check them out! Get custom PCBs made for cheap! pcbway.com/g/08Zx0p
14:29 - Let's configure this thing!
25:30 - Mount it
27:26 - An important note on the names
28:18 - Query to see if its working
29:50 - what I think about the sensor.
30:56 - Thank you everyone!!!! You are all awesome!

[@PrintingPress3D]

dude you got a video for everything youre the goat

[@StackingLayers]

Hahaha! Thanks! More to come too.

[@Tomomi-vr9nc]

Thank you, thank you, thank you! Been struggling with this issue for weeks now. Your video is so thorough and well though out. Explains all the needed points and helps us to understand Klipper better. Thank you!

[@davidham1338]

great video, i have mine hooked up and noticed i had a error and you nailed it for me, and now i can fix it. thanks

[@StackingLayers]

That's wonderful to see. Glad it was helpful.

[@vedanthinorn]

I've been looking into making something like this myself, my worry is that the sensor and grate aren't quadrature and thus don't give rotational direction so that extrude/retract actions can read as motion when they are not, or not register as motion when it is depending on retraction. My ideal would be one that signals forward and backward motion in detail which klipper receives and compares to the expected filament motion so you can detect a jam _and_ detect extruder skips. I'm working on one integrated into a Voron Stealthburner toolhead.

[@StackingLayers]

Going quadrature would make it a legitimate smart sensor. It's would also likely make it more expensive. But if the coding worked enough to catch skips or slips and log retraction and all that it could definitely open up a lot of on the fly adjustments to keep quality in check. I would like to see something like that com into play.

[@henataliful]

Did the same sfs2 cfg and got message filament motion sensor is in vaild ... Any clue?

[@StackingLayers]

I would have to see the configuration and error message. But it sounds like this a configuration error. Missing a symbol or something like that

[@angelienIG]

hey, firstly nice job for your video ! i'm try to add it ton my sv06 mainboard with btt pi v1.2 klipper pad, can you help me ? don't understand wich wire have to be on wich pin ... x')

[@StackingLayers]

It doesn't look like that board can have 2 runout sensors. There's only one one runout port. If you use a probe to home I then you can use the z-stop, but you are definitely going to need to do some repining for the plugs to work correctly.

[@Code_String]

@@StackingLayers Interesting to see something about the SV06 and the BTT Pi V1.2, there doesn't seem to be much information on so out there. Not exactly sure if there's a specific naming for the pinout required because the pins I'm trying to use are already used by other things my SV06 motherboard has assigned (PC0, PC2, etc)

[@a2_zhongbaode718]

Hello how do i connect both sensors to octoprint?

[@StackingLayers]

I don't do much with octoprint anymore, but perhaps this plugin will work. plugins.octoprint.org/plugins/smartfilamentsensor/

[@a2_zhongbaode718]

@@StackingLayers okay thanks! Ill give it a try

[@chucktastic2287]

this is not about filament run out....can the CR touch be used with BTT klipper Pi and and skr mini e3 v3?

[@StackingLayers]

Yes. It's set up exactly as a BLtouch.

[@chucktastic2287]

@@StackingLayers thank you so much for the response..I think we have a bad CR touch

[@StackingLayers]

@@chucktastic2287 make sure the pins are being connected correctly. Creality uses odd wire colors sometimes that are completely backwards from the normal usage. Like black on +5v and red on ground. This is a good diagram to show what the pin functions are. support.th3dstudio.com/helpcenter/crtouch-sensor-pinout-sensor-side/

[@jackoneill8585]

smart means its a optical sensor and reciever ie infrared transmitter and reciever

[@Optikification]

and it monitors movement of the filament and not only see when the filament runs out.

[@StackingLayers]

There's no optical sensor in the smart filament runout sensor. It's a rotary encoder and a micro switch.