we tried a few different altitudes ranging from 30 feet AGL to 100 at 5 m/s. Same result. These test flights weren't long rang, the entire mission was only 2 waypoints, approximately 250 feet length mission. We'll try these test flights again using voxl-logger and try and diagnose the issues we're having.

Sure @hmlow here is a schematic snippet of that section so you have all the info: [image: 1680627538383-7c56d0e9-6cd1-488e-9b30-a189e04b455a-image.png]

@nshahrestani Sure, Here is the 4G modem: https://docs.modalai.com/lte-modem-and-usb-add-on-v2-datasheet/#power-consumption and Microhard 900MHz for reference: https://docs.modalai.com/microhard-add-on-datasheet/#power-consumption I think I need to add a section for the 5G modem.

We really don't have anything better, sorry. The Sentinel is really intended to be a development platform, and not support any mission critical activities.

Just tried to calibrated the stereo camera using ROS camera calibrator. Had to run the fixed voxl-mpa-to-ros. Because the ROS calibrator expects left and right to be exactly synchronized.

I'm using the Setinel. voxl-suite: 0.9.5

Good day We are working on a Sentinel with VOXL2 and are getting a similar CMD warning as well as similar INFO logs. The documentation for VOXL MPA to ROS says "Coming soon", so does the voxl-mpa-to-ros package also work for VOXL2 on Sentinel?

@José-Quintanilla As seen in the doc, the only port that supports hires is J2

Thank you for your help! I was able to download it directly and it works now. On my other device I was only able to build it, but on this device downloading it directly works.

Maybe it's the VOXL SDK diagram here? https://docs.modalai.com/voxl-sdk/

@tom Unfortunately it will be a few days before i can get that to you, but what i can do is list off the items i received. I received one sentinel drone with 5g modem and a set of propellers one pelican case 4 batteries 2 wall power adapters one alpha wireles dongle one voxl power module as pictured [image: 1680190839531-94fd33c4-5068-4aef-be6b-040f4f4c7f58-image.png] Note: the power module was taped to the alpha dongle (which was in the alpha box). from looking through the documentation the usb break out for the wifi on the drone with a 5G modem is the 4 pin JST GH for usb2.0 on the modem carrier board itself. it it looks like all i was missing was the cable that plugs into that board and the wifi dongle. i saw a shipping notification so it appears something is on its way. Thank you

Hello @Umut-John, The concept of estimating wind speed using a quadcopter is an interesting and complicated problem. We do not provide the software that implements this feature, but there are research papers you can read which discuss this topic. For example, I came across the following publication after a quick google search : https://journals.sagepub.com/doi/full/10.1177/17568293211070824 . I do not know how good this particular approach is (I did not read it in full detail), but this paper explains the key concepts involved in estimating the wind speed using a quadcopter, such as the need for accurate attitude estimation, characterization of air frame drag as function of tilt angle), and the authors propose a Kalman Filter approach which you can investigate. Hopefully this gives you a good start - please do some more research! Alex

@bensusana PX4 does not run on VOXL1, only on the Flight Core (Flight Deck is just a combination of the two). Flight Core should be able to support any I2C magnetometer that PX4 says it supports.

@hmlow Yes, there is a SPI port on J10

@kimmy sorry to hear you're missing the motor cap. To clarify, the cap you're referring to, is it the conical nut or the nyloc nut? One more thing, motor color? There's either a blue or black. There's a difference in the shaft diameter and length between the two. We've been attempting to source both nuts from the motor company but nothing has come to fruition. In the mean time it is possible to find M6 nylocs and conical nuts at amazon or any fpv/hobby shop. Just make sure they are aluminium. What we've ran into is that many are out-of-stock. Hope that helps!

solved. I found rotate_tracking option of voxl-configure-cameras command.