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Alex Kushleyev

Hello @patkirkmartin , thanks for clarifying.

Just to give you some more background and the reason for my questions: we have previously experimented with enabling DSHOT output using VOXL2 IO board and it worked during testing. However, due to lack of need and time to properly test and release, the feature was never mainlined. Also, we tested receiving the telemetry via UART only (which some DSHOT ESCs support) - had to hijack a UART port on the voxl2 io board for that.

Further developing the (bi-directional) DSHOT on the voxl2 io board is currently not on our roadmap, however if you we willing to do your own code development for the voxl2 io board, we can look into releasing the source code for it (together with the initial DSHOT output implementation).

VOXL2 itself is not capable of outputting the required DSHOT signals.

Alex

Alex Kushleyev

Hello @patkirkmartin,

If you are using our ESC with a new motor / prop, you need to perform a one-time ESC calibration and upload the new ESC params using the voxl-esc tools. Please see : https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-esc/-/blob/master/voxl-esc-tools/calibration.md

If the motor kV is relatively low (less than 800), you may need to take a look at this as well : https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-esc/-/blob/master/voxl-esc-tools/doc/low_kv_motor_tuning.md

It sounds like your de-sync is right during spinup - make sure that you are using sinusoidal spin-up and that also needs to be tweaked for best performance (only a few parameters like spin-up power and time).

If you would like to provide more details about the motor / prop / voltage, we can try to provide more guidance.

Alex

Eric Katzfey

What is CAL_MAG0_ROT set to, 0? You can try to set it to 2 (yaw 90) or 6 (yaw 270) and see if that helps the situation.

Eric Katzfey

Yes, the beta release is fine. It was beta only for some features that are not used on our development drones. Otherwise it was a stable release.

zauberflote1

Hello Roy,
Here are some questions and steps to begin troubleshooting it:

Have you done any mods to your airframe that could impede the camera view?
Do you have any voxl-logger logs? (if not, collect with voxl-logger -b -v ov on device's shell) -- These are useful to replay and evaluate VIO offline, allowing to trace any abnormal behaviour.
By losing VIO, you mean as in position hold no longer works until flight completion or as in estimates suddenly jump but the filter remains stable? (Failure vs. a Dynamic reset).

Eric Katzfey

Unfortunately, with the provided information there is no way to know what the problem is. If you can provide the software created by Claude that would probably help explain things a lot better.

Eric Katzfey

What is the physical connection between the Optical flow unit and the FC? Is it a UART? Which optical flow unit are you using?

Maxwell Schaefer

@Omri-Eival The Zorro Blue User Manual should answer most of your questions, with a shell script to copy all of the latest data to a handset in the provided zip file. While you are there, if your firmware is out of date it may be worth going through the update process.

tom

@Jetson-Nano Given the crash and hardware issues I'd recommend sending this board in for an RMA

Eric Katzfey

I'm not sure I understand your issue. Can you connect via USB cable to adb into the drone? When you say PX4 is beta version, do you mean the VOXL SDK is a beta version? Can you provide the version numbers? What software did you write that enabled you to connect to the drone?

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