Seeker failing to take off after several successful flights

[Cody]

I have had several successful flights with our Seeker. No hardware or software changes.
Last several attempts (spaced out over a week) have failed. The front left landing gear never leaves the ground. When the throttle is pushed to 75% in manual mode the Seeker will start to spin in circles around the front left motor.
I have pulled PX4 ULG logs and plotted them with PlotJuggler.
Motor actuator and ESC RPMs show that 1 motor (or ESC) spins up almost none. I can upload this data, but I dont seem to be able to attach to this post.

I can buy a replacement motor from GetFpv. I assume I would need a quote for a Modal AI ESC?

[Alex Kushleyev]

Hi @Cody , is it the case that the commanded RPM is relatively high, but motor just does not spin up? Did you confirm that from the logs?

We have a fork of px4-flight-review, which you can run on your linux pc locally https://github.com/modalai/px4-flight-review . There is a Quickstart Guide that should get you up and running in a few steps (Docker is required) - https://github.com/modalai/px4-flight-review?tab=readme-ov-file#quickstart-guide

This has support for our custom data logs, including commanded and actual motor RPMs, which is useful for debugging. Can you send a plot of RPMs from the flight review app?

You should have a plot like this, maybe zoomed in on areas of interest.

Alex