# Problem with smart sensor filament

**URL:** <https://klipper.discourse.group/t/problem-with-smart-sensor-filament/641>\
**Category:** General Discussion\
**Created:** [August 1, 2021, 8:22am UTC](https://klipper.discourse.group/t/problem-with-smart-sensor-filament/641 "2021-08-01T08:22:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lifeform](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@lifeform](https://klipper.discourse.group/u/lifeform)\
**Post date:** [August 1, 2021, 8:22am UTC](https://klipper.discourse.group/t/problem-with-smart-sensor-filament/641/1 "2021-08-01T08:22:37Z")

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hello,  
cause it suggest to not post at github issue, i want to share my problem with smart filament sensor.  
i used kiauh installer, installed last version klipper (v0.9.1-659-g69d9497d), moonraker (v0.7.1-34-g5522e15) and fluidd (v1.16.2)  
there is 2 main problem:

1. the first problem occurred when i print another session after the first time ( first means after klipper restart). the smart sensor is not recognize again by system. i realize after my filament run out but the system is not paused and still running without filament.  
after i realize i try several condition :  
a. i reboot host, check the tune tab and the warning show up at my sensor panel, it will change to ok icon after i refresh the endstop status  
b. try restart klipper service, check again the tune tab and my sensor panel already have ok icon  
c. i push emergency button, push firmware restart and check the icon will be in warning state, and will be ok after i refresh the endstop status like a condition  
d. print the object until it finished. check the sensor it at warning state, cannot change to ok state after push refresh endstop status  
e. i print another object ( session 2 without restart) and simulate the filament is runout/empty the system never paused. it will paused in first session.

2. the second problem related with smart filament sensor setting, my setup is 🙂

[filament\_motion\_sensor my\_sensor]  
detection\_length: 12.0  
extruder: extruder  
switch\_pin: P1.26  
pause\_on\_runout: True  
event\_delay: 5  
pause\_delay: 1

the problem is when it have no filament/jam it will paused but after the nozzle parked, it will return and running the printing again. but the z height is not back to save position. after several second it will down with nozzle keep running.  
there is 2 problem with this. 1. cannot really paused. 2. the z position is not back to the position

any help about this. the 1 i believe it is a bug. the second i might not have good setting. but who knows

thanks for any kind of help  
budi

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**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\
**Post date:** [April 15, 2024, 7:29pm UTC](https://klipper.discourse.group/t/problem-with-smart-sensor-filament/641/2 "2024-04-15T19:29:13Z")

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Closed on April 15, 2024, 7:29pm UTC