Autosport Labs

I'm still seeing this noisy Lon Accel data. I have also seen it on tracks that don't have steep climbs or descents. I have recalibrated the accelerometer multiple times with no change. The longitudinal G data is pretty much useless.

https://youtu.be/lq_rrMppsy4

The log is exported using the app on the RPi. The data is captured with a Racecapture/Track MK2.

The IMU is stable when viewing the 3d accelerometer visualization page in the dashboard. I have attached a screenshot of the data. I also noticed that the Pitch change in degrees/sec is way out of whack. Also, there is no way my 140 whp Miata could accelerate at 1.4 g! Although it would be fun!

Definitely not the SD card, I tried with two different Sandisk Ultra Plus UHS-1 cards. If it's fast enough to save 4k video to, it should have no problem with the log exports. Also, if it were a card speed issue, the data corruption wouldn't be limited to just one character at multiple spots in the ...

After having difficulty importing a particular Racecapture session into Track Attack, I took a look at the raw data in the .log file. In several spots in the file, the longitude is missing the decimal place, which wreaks havoc with plotting the lap. An excerpt of the cells is below. This does not ha...

I noticed that in my saved sessions from Horse Thief Mile this past weekend, the logitudinal acceleration values were very noisy and unstable. I am thinking this may be due to the large angle of climb and descent during most of the track. It appears as if the long accel vector is not being normalize...

Hello all! I just finished installing my Racecapture/Track MK2 into my 1999 Miata track car. Everything went well and I have the unit interfaced with my MegaSquirt MSPNP2 on the CAN bus. I ran into a few stumbling blocks along the way and I will pass along the key bits that allowed the RaceCapture t...