# VOXL 2 tflite & mpa to ROS topic issues

Source: https://forum.modalai.com/topic/1677/voxl-2-tflite-mpa-to-ros-topic-issues
Category: VOXL 2 and VOXL 2 Mini (https://forum.modalai.com/category/26/voxl-2-and-voxl-2-mini)
Tags: voxl-2
Posted: 2023-01-09 21:30:30 UTC by jon
Replies: 1 · Views: 450

## jon · 2023-01-09 21:30:30 UTC

So tflite works perfectly fine, and outputs correctly to the tflite and tflite_data topics. However, the tflite_detections topic that appears after running mpa to ros is just empty and doesn't contain data while a simultaneous echo of tflite_data shows detections are in fact occurring.

## Reply by Guest · 2023-01-09 22:07:13 UTC

Hi @jonathankampia,

After running ```voxl-mpa-to-ros```, you should see the  ```/tflite_data``` and ```/tflite``` topics created as they just mirror the existing pipe names from the tflite-server. 

I am not sure what you are referencing with the tflite_detections topic, but if you could share the output of ```voxl-version```,  ```voxl-list-pipes```, as well as a ```rostopic list``` with the two services running I can help debug.