# TOF detecting non-existing objects

Source: https://forum.modalai.com/topic/2070/tof-detecting-non-existing-objects
Category: VOXL 2 and VOXL 2 Mini (https://forum.modalai.com/category/26/voxl-2-and-voxl-2-mini)
Tags: voxl-2
Posted: 2023-04-13 08:40:30 UTC by afdrus
Replies: 1 · Views: 532

## afdrus · 2023-04-13 08:40:30 UTC

Hi everyone,

I am trying to detect obstacles with a TOF sensor on VOXL2 by placing it in front of the drone. However, as you can see in the picture below, the sensor is detecting a fake object (distant ~0.5m) even if there's nothing in front of the drone. Are there any parameters in the .conf files where I can tune the confidence of the sensor or apply some sort of filtering?

[![Screenshot-from-2023-04-07-10-03-23.png](https://i.postimg.cc/0yhBgzSj/Screenshot-from-2023-04-07-10-03-23.png)](https://postimg.cc/K1rNBvJh)

## Reply by afdrus · 2023-05-09 06:55:52 UTC

Any ideas from the dev team?