SV06 SKR mini E3 V3 runout sensor

[Astrolava]

I hooked up a filament runout sensor to the toolhead of my SV06, which uses an SKR Mini E3 V3, I'm very sure it's wired correctly. My printer.cfg has the following:

[filament_switch_sensor filament_sensor] switch_pin: !PA4 # "Pulled-high" pause_on_runout: True insert_gcode: M117 Insert Detected { action_respond_info("Insert Detected") } runout_gcode: M117 Runout Detected { action_respond_info("Runout Detected") } CONDITIONAL_BEEP i=3 dur=300 freq=400

I can see there's a "filament sensor" part on Klipper's dashboard now, but it says "empty" no matter if there's filament loaded or not.
I don't seem to have any indication of a state change at all, and I'm wondering if I missed a step? 
It's a brand new filament runout sensor, but I don't even know how to test it to make sure the actual piece of hardware works.

The filament runout sensor is a cheap one off alieepress, so it's not at all impossible I got a faulty one. I've tested the wire to confirm all 3 connections work.

Just to clarify the wiring. On the toolhead, V is top, G is middle, S is bottom. On the runout sensor, input side is V, middle is G, output side is S.

Any advice on how I might get this working?

[jakebullet70]

I just setup one on an SKR 1.4 board on another printer. I used these docs.

https://www.klipper3d.org/G-Codes.html#filament_switch_sensor

I used 'QUERY_FILAMENT_SENSOR' command from the terminal until I had it working. For me it was the wrong pin.

[Astrolava]

I just setup one on an SKR 1.4 board on another printer. I used these docs.

https://www.klipper3d.org/G-Codes.html#filament_switch_sensor

I used 'QUERY_FILAMENT_SENSOR' command from the terminal until I had it working. For me it was the wrong pin.

What pin did it end up being for you? I have just finished testing pins PA-PF (0-15) - aside from the reserved and already used pins. None of the pins detected the filament runout button being toggled.

I wonder if maybe there's an incorrect pin set somewhere which is occupying the pin for the sensor.
I noticed my screen's button doesn't work on PA15, but, it also didn't detect the filament runout. I'm not too sure what to do now.

[Astrolava]

These are the already occupied pins which I can't test for obvious reasons. I wonder if one of these might be the actual probe pin, and if so, what that pin might otherwise be.
I'm interested in this PA0...

PA0 - [extruder] - sensor_pin PA9 - [display] - encoder_pins PA10 - [display] - encoder_pins PA11 - reserved for USB PA12 - reserved for USB PA15 - [display] - click_pin (tested)

PB0 - [stepper_z] - step_pin PB1 - [stepper_z] - enable_pin PB2 - [stepper_y] - dir_pin PB3 - [extruder] - step_pin PB4 - [extruder] - dir_pin PB5 - [output_pin beeper] pin PB8 - [display] - cs_pin PB9 - [display] - sclk_pin PB10 - [stepper_y] - step_pin PB11 - [stepper_y] - enable_pin PB12 - [stepper_x] - dir_pin PB13 - [stepper_x] - step_pin PB14 - [stepper_x] - enable_pin PB15 - [controller_fan electronic_enclosure_fan] - pin

PC0 - [tmc2209 stepper_x] - diag_pin PC1 - [tmc2209 stepper_y] - diag_pin PC4 - [heater_bed] - sensor_pin PC5 - [stepper_z] - dir_pin PC6 - [fan] pin PC7 - [heater_fan hotend_fan] - pin PC8 - [extruder] - heater_pin PC9 - [heater_bed] - heater_pin PC10 - [tmc2209 extruder] tx_pin PC11 - [tmc2209 extruder] uart_pin PC14 - [probe] - pin

PD1 - [extruder] - enable_pin PD6 - [display] - sid_pin

PF0 - reserved for crystal? PF1 - reserved for crystal?

[Astrolava]

I guess another option here might be that the place where the P7 is plugged in requires more configuration. If the port on the board, which I believe is labeled "DET (power detection?)" detects power being input, then it might require a source of power (3v or so?) - but, if the DET doesn't also supply that power, then the filament sensor - which is just a button that joins two wires essentially - is just a dead wire. Doesn't the output (DET) need to supply 3v to Vcc, then detect 3v in ground? Is that how it works?

Right now, it seems that it's just a dead wire. I couldn't get any reading on any of the pins of P7.

[bassamanator]

You need to uncomment the filament sensor section in printer.cfg, as well as adjusting misc-macros.cfg. Please see What are some settings that I can change?. Read full docs before proceeding.

Ignore what it says on the dashboard. Start a print with no filament in the nozzle, but a piece of filament in the sensor. Remove the filament from the sensor to see if things are working as expected.

[Astrolava]

You need to uncomment the filament sensor section in printer.cfg, as well as adjusting misc-macros.cfg. Please see What are some settings that I can change?. Read full docs before proceeding.

Ignore what it says on the dashboard. Start a print with no filament in the nozzle, but a piece of filament in the sensor. Remove the filament from the sensor to see if things are working as expected.

Am I still doing the pin PA4 ?

I have this:

[filament_switch_sensor filament_sensor] switch_pin: !PA4 # "Pulled-high" pause_on_runout: True insert_gcode: M117 Insert Detected runout_gcode: M117 Runout Detected CONDITIONAL_BEEP i=3 dur=300 freq=400

Do you know specifically what needs to be adjusted in misc-macros? I mean, I was doing the gcode: QUERY_FILAMENT_SENSOR SENSOR=filament_sensor, But, it wouldn't change when I'd insert / remove filament.

I did wire the SKR mini E3 V3 based on the diagram you posted. I'll give it another try while starting a print. I'll then see if it stops the print. It didn't originally, which is what made me start testing other things to begin with. I'll let you know if I make progress.

[Astrolava]

So yeah, after testing and testing, it doesn't stop the print. Doesn't pause it, doesn't beep, no indication at all that anything has changed. It'll just keep printing without filament.
I will say this, I attached the filament sensor and wire to a breadboard and was able to toggle an LED using the switch. The switch is working, the wires are fine. There's something else wrong here.

[jakebullet70]

Had the same issue. You need to turn it on in the START gcode.

[Astrolava]

Had the same issue. You need to turn it on in the START gcode.

Thanks for the reply. Umm, sorry I actually don't know how to turn it on. Mind elaborating? I'm so confused. Am I still using PA4? What's ^PA4? Is that what I need to do?
Do you mean to put this in my start gcode? SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=1

[jakebullet70]

Yes that is right: SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=1

When setting up a filament sensor you do not need to print, you can use 'QUERY_FILAMENT_SENSOR' command and put filament in the sensor by hand, that tells you if you have the correct pin setup, once that is done and QUERY_FILAMENT_SENSOR works by telling when it has filament or not then you turn it on in your START gcode.

[bassamanator]

Am I still doing the pin PA4 ?

@Astrolava revert to whatever was already in printer.cfg.

Do not add SET_FILAMENT_SENSOR SENSOR=filament_sensor ENABLE=1 but if you think you know better than the author of this config, go for it.

[jakebullet70]

I sad that is what had to do on an SKR 1.4 board. Did not work with out it. Sorry, I wll back out.

[bassamanator]

@jakebullet70 No need to back out. The issue is that you'll have a hard time keeping up with any changes in this config. The only thing my users are required to do are to either uncomment/comment out a section, or change a 1 to a 0 or vice versa. No programming knowledge is required.

[Astrolava]

I'm... not sure why it doesn't work. I'll check to see if my ribbon cable is maybe busted. I've still got the P7 thingy hooked up to I believe DET on the SKR mini E3 V3, which someone said was PC12. But, yeah, PA4, PC12, doesn't matter, nothing works. I'll just have to check the ribbon cable.

[bassamanator]

Updated wiring diagram, printer.cfg and misc-macros.cfg. Pull new changes.

1. Take note of the wiring connecting to the SKR's e0-stop.
2. Take note of how the filament sensor is connected to the hotend pcb.
3. Take note here: https://github.com/bassamanator/everything-sovol-sv06?tab=readme-ov-file#filament-sensor
4. Enable filament sensor via: https://github.com/bassamanator/Sovol-SV06-firmware/blob/skr-mini-e3-v3/README.md#what-are-some-settings-that-i-can-change
5. Restart firmware and query the sensor via @jakebullet70's suggestion, QUERY_FILAMENT_SENSOR SENSOR=filament_sensor.

Can't simplify the process any further.