BTT Smart filament sensor setup

Terradive

@Terradive Jay I keep getting a low filament movement error and it pauses. Then I resume it goes and pauses etc. When I use an M591 d1 command during printing it says no feedback given.

Terradive

@jay_s_uk I have also installed a .9 stepper motor on my extruder. I tried doubling the l amounts to compensate but that did not owrk.

jay_s_uk

@Terradive can you try increasing the E value to 22 from 15? IIRC that's these recommended value as the sensor only reads every 7.5mm

Terradive

@jay_s_uk I did. It printed longer but still gave the too little movement.

jay_s_uk

@Terradive what results are you getting back from it when it fails? M591 D0 (or D1) should tell you

Terradive

@jay_s_uk No data received. I set the r value down to R1:200. It still stopped in another test. I'm trying to rule out any gcode problems assigning drives. I think I have the wiring correct.

Terradive

@jay_s_uk It's printing using tool 1.

jay_s_uk

@Terradive best to check your wiring then

Terradive

This is my wiring. Do you see any problems? I've tried printing from both drives neither works. They're wired identically.

elmoret

@Phaedrux This user has emailed me asking for a warranty replacement. Maybe use a X/Y/Z end stop to rule out a board defect on the E0/E1 ports?

Phaedrux

@Terradive Can you check for continuity on that cable with a multimeter? It's acting like it's getting nothing from it.

As elmoret suggests, do you have a simple endstop you could connect and test as a simple filament presence sensor?

Terradive

@Phaedrux I moved the xstop cable over to the e0 slot and tapped the button a couple of times. The light flickered. I'm not real great with multimeters, I unplugged the cable at the sensor. With the printer off, I then put the positive connection to the v wire and the negative connection on the ground. The numbers changed slightly. I then turned on the machine and repeated the test and the numbers changed more.

elmoret

@Phaedrux @T3P3Tony

Phaedrux

@Terradive said in BTT Smart filament sensor setup:

@jay_s_uk I have also installed a .9 stepper motor on my extruder. I tried doubling the l amounts to compensate but that did not owrk.

When you installed the 0.9 stepper did you also modify your E steps per mm?

@Terradive said in BTT Smart filament sensor setup:

I moved the xstop cable over to the e0 slot and tapped the button a couple of times. The light flickered.

So it sounds like the E0 endstop is responding correctly.

@Terradive said in BTT Smart filament sensor setup:

I'm not real great with multimeters

To test continuity of the cable going between the endstop port and the sensor you would set your multimeter to continuity mode and then touch a probe to an end of the wire at the same time. The meter will usually beep when there is a connection.

Here's an illustrated example of it. https://www.wikihow.com/Test-Continuity-with-a-Multimeter

Can you show a screenshot of the gcode console after sending M591 D0or M591 D1 depending which tool you're using after it has paused?

I don't think there is anything wrong with the Duet itself.