# Run out of filament is not triggered more than once for a print **URL:** \ **Category:** Snapmaker 2.0 (3-in-1)\ **Created:** [May 10, 2021, 5:30pm UTC](https://forum.snapmaker.com/t/run-out-of-filament-is-not-triggered-more-than-once-for-a-print/18556 "2021-05-10T17:30:27Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![mouchon](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/mouchon/32/11817_2.png) [@mouchon](https://forum.snapmaker.com/u/mouchon)\ **Post date:** [May 10, 2021, 5:30pm UTC](https://forum.snapmaker.com/t/run-out-of-filament-is-not-triggered-more-than-once-for-a-print/18556/1 "2021-05-10T17:30:27Z")
Hi All, Did you have same strange behaviour as me? When I run out of filament more than once; the printer pause and the screen to reload new filament appears only once. This happens for the first run out, but not for others. ? ---
**Author:** ![cbardon](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/cbardon/32/6204_2.png) [@cbardon](https://forum.snapmaker.com/u/cbardon)\ **Post date:** [May 10, 2021, 10:15pm UTC](https://forum.snapmaker.com/t/run-out-of-filament-is-not-triggered-more-than-once-for-a-print/18556/2 "2021-05-10T22:15:03Z")
I haven’t actually run out twice, but I’ve used the M600 to manually change filaments twice in one print and it’s worked as expected. ---
**Author:** ![Edwin](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/edwin/32/13481_2.png) [@Edwin](https://forum.snapmaker.com/u/Edwin)\ **Post date:** [May 11, 2021, 7:30am UTC](https://forum.snapmaker.com/t/run-out-of-filament-is-not-triggered-more-than-once-for-a-print/18556/3 "2021-05-11T07:30:11Z")
The controller can detect the filament run-out no matter how many time you trigger it. If the issue remains, please update the firmware to V1.12.1. > [@Snapmaker 2.0 Firmware Updates and Downloads](https://forum.snapmaker.com/t/snapmaker-2-0-firmware-updates-and-downloads/5443/14): > > Apr 27 2021: Snapmaker2\_V1.12.1 Thank you for your suggestions on how to make the Snapmaker 2.0 better. Your feedback is always appreciated. Here comes the latest version of the Snapmaker 2.0 firmware. Changelog Controller New Features add “M413” G-code for enable/disable Power-Loss Recovery ([#92](https://github.com/Snapmaker/Snapmaker2-Controller/pull/92)) Parameters [S\] S0/S1 for enable / disable Power-Loss Recovery e.g. M413 S0 disable Power-Loss Recovery add “M600” G-code for replace filament manually ([#93](https://github.com/Snapmaker/Snapmaker2-Controller/pull/93)) You can add this G-co… Edwin ---
**Author:** ![mouchon](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/mouchon/32/11817_2.png) [@mouchon](https://forum.snapmaker.com/u/mouchon)\ **Post date:** [May 11, 2021, 7:46am UTC](https://forum.snapmaker.com/t/run-out-of-filament-is-not-triggered-more-than-once-for-a-print/18556/4 "2021-05-11T07:46:23Z")
Finally, find the root cause, the filament has not completely passed the sensor but was not pushed anymore by the gear then the runout sensor was not triggered. But just a question, where is the filament run-out sensor upside of the gear or downside of it? ( make sense that it is a downside ). Anyway thanks for the support and information. ---
**Author:** ![Edwin](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/edwin/32/13481_2.png) [@Edwin](https://forum.snapmaker.com/u/Edwin)\ **Post date:** [May 11, 2021, 8:04am UTC](https://forum.snapmaker.com/t/run-out-of-filament-is-not-triggered-more-than-once-for-a-print/18556/5 "2021-05-11T08:04:38Z")
Sorry that we did not think the root cause is the filament itself. As for the filament switch, here is an image for your reference: ![image](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/2X/6/6d5d327870a06afebe4074cfd2f2199fada2d314.jpeg) ---
**Author:** ![mouchon](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/mouchon/32/11817_2.png) [@mouchon](https://forum.snapmaker.com/u/mouchon)\ **Post date:** [May 11, 2021, 8:28am UTC](https://forum.snapmaker.com/t/run-out-of-filament-is-not-triggered-more-than-once-for-a-print/18556/6 "2021-05-11T08:28:50Z")
Ha ok, thanks for the reference, but then need to further analyze why run out was not triggered the second time, because the filament was on the bottom side and if I understand well your image the switch is on top of the module. Kr Philippe.