@modaltb said in Questions for VOXL2 and Sentinel:

4] Seeker has Time of Flight module, whereas Sentinel has two stereo pairs, but the voxl-dfs-server can produce point clouds from these --> https://docs.modalai.com/voxl-dfs-server and https://gitlab.com/voxl-public/voxl-sdk/services/qrb5165-dfs-server/. We can get more info for you if needed, just let me know.

@modaltb,

Thanks for your kind reply. Now we will shop Sentinel!

After receiving the goods, some experiments will be performed against various lighting conditions. Taking into account the test results, we need to build a new hardware (with custom LEDs) using only the VOXL2 flight deck (https://www.modalai.com/products/voxl-2-flight-deck?variant=40503626039347).

Therefore, it would be very helpful if your team could tell us about any design considerations in our case.

Thank you.

Hello, we are planning to operate the VOXL2 development drone under the following environmental conditions :

• Indoor (GPS Denied)
• Only Wi-Fi(LTE is not available in our case). Currently, we are planning to operate the drone with Wi-Fi 6 mesh network using multiple routers (such as https://www.netgear.com/home/wifi/mesh/mk63/). On the other hands, we would like to install Microhard, if it becomes necessary in our project.
• Due to poor lighting conditions (relatively dark), we are considering to install custom LEDs on the drone. So a small amount of payload (~500g) might be added.

We decided to choose a Sentinel(w option: 2.4/5Ghz Wi-Fi model).

I have a few questions:

1. Can I install or replace Microhard on Sentinel(w option: 2.4/5Ghz Wi-Fi model) by myself?

2. In the development guide, the drone supports ROS Indigo/Melodic version. Unfortunately, our host PC is already running on the latest ROS version called noetic. Do you have any test results in this case?

   • Host PC: ROS noetic, Ubuntu 20.04
   • Drone: ROS Indigo (https://docs.modalai.com/setup-ros-on-host-pc/)

3. I would like to purchase additional propellers, but I cannot find this option.

4. Unlike Seeker (https://docs.modalai.com/seeker-user-guide-vio/), there is no description of the 3d point cloud data (pcd) stream for Sentinel(, instead it provides odometry information based on VIO). I would like to know that VOXL2(the core of Sentinel) provides some API's to help measuring depth map(eg disparity maps or pcd).

5. As far as I know, Sentinel's VIO algorithm shows amazing performance. Unfortunately, this performance might be limited under some lighting conditions. We hope to understand these conditions(brightness, Lux, Lumens, etc) before installing custom LEDs. Can you provide us any information considering brightness, please?