Topics created by ashwin

@ashwin I don't have the info either but it's similar to VOXL2's weight which is 16g

@ashwin

Do you need to be able to control the servo from PX4 or it would be acceptable to have an API you could use on the CPU / Linux on VOXL2 ?

Alex

@ashwin Unfortunately, Qualcomm does not allow others to distribute the Hexagon SDK. It has to come directly from them.

Hi @ashwin,

Our ESC needs to be tuned for the motor / propeller in order to achieve the best performance. In some cases, without tuning, the performance will be very poor, as there is an expectation of the ESC parameters to match the actual motor + propeller. This is done to ensure consistent and responsive behavior of the ESC.

If you are changing motor / propeller, you should perform the tuning procedure described here : https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-esc/-/blob/master/voxl-esc-tools/calibration.md . Since you are using a 2S battery, you can start with the Starling ESC params (https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-esc/-/blob/master/voxl-esc-params/D0014_starling_1504_3000kv_ms_props/D0014_starling_1504_3000kv_ms_props.xml) and update the tuning parameters as instructed.

Since you mentioned the sinusoidal spinup, not working properly, you will need to enter the correct kV value in to the ESC param file and may need to adjust the start-up power or target spin-up rpm.

the voxl-esc tools come installed on voxl2 in /usr/share/modalai/voxl-esc-tools and the following are useful commands:

make sure to stop voxl-px4 before using voxl-esc tools : systemctl stop voxl-px4 voxl-esc-scan.py will tell you which ESC firmware you are using - you should upload the latest, which is 39.20. voxl-esc-upload-firmware-all.sh script will autodetect the esc and upload the latest firmware to all 4 of the ESC channels voxl-esc-verify-params.py can be used to check which esc params are installed voxl-esc-upload-params.py can be used to upload new ESC parameters.

Please let me know if you have any other questions.

Alex

Hello @Alex-Kushleyev,

Thank you for the confirmation.
It has helped us decide upon the architecture for the current and an upcoming project.
The suggested M0141 add-on is really helpful suggestion as well.

Regards,
Ashwin

Hey @ashwin, inside the following path:

modal-qdl/qdl/qfil_app/src/data/qfil/cdt

Can you run the following command and post the output?:

sudo /usr/local/bin/qdl \ --debug --storage ufs \ --include . \ prog_firehose_ddr.elf \ rawprogram3_RB5.xml \ patch3.xml

This will give a more verbose output as to why your VOXL 2 is failing the CDT flash, thanks!