Obsidian Motorsport Group

Obsidian Motorsport Group Obsidian Motorsport Group was created to supply clients with informed solutions and products for racing data aquisition and engine management systems.

V3 is shipping out starting tomorrow! Many more options available at time of order to suit different use cases. Updated ...
06/08/2026

V3 is shipping out starting tomorrow! Many more options available at time of order to suit different use cases. Updated user manual coming this week. Overview on the site and a long winded blog post coming soon.

Short INS Pro update about RTK corrections on easy mode with the VBOX NTRIP Modem, and a simple demo of a really low noi...
05/02/2026

Short INS Pro update about RTK corrections on easy mode with the VBOX NTRIP Modem, and a simple demo of a really low noise and high accuracy accelerometer.

First photo is live data from the INS Pro. Note the “tall and skinny” distributions. Second photo is live data from the regular IMU. Note the “wider and shorter” distributions. Tall and skinny == low noise, wider and shorter == more noise. It should be said also, that a normal simple IMU will have a *MUCH* wider distribution than even my IMU, which would indicate much more random noise.

This INS Pro combo with RTK should yield 1-3cm global positioning accuracy anywhere in the lower 48 states! Real neat! Going to do a PCB revision here soon, then I’ll actually be able to sell these. Not for everyone, but hopefully it’ll help with some folks with vehicle dynamics work!

V3 INS, IMU, INSD, GPS (…new and coming soon) is looking real swell!V3 features:- Ultra rugged “marine” potting optional...
04/28/2026

V3 INS, IMU, INSD, GPS (…new and coming soon) is looking real swell!

V3 features:
- Ultra rugged “marine” potting optional
- Rearward connector available in Deutsch ASL 5-way or optional Sourieau 9-way to allow for advanced tuning or development firmware access
- RS232 GPGGA / GPRMC output to integrate with legacy serial protocols
- More extensive power protection circuits (internal short protection and reverse polarity protection)
- Better heat dissipation for the main processor to manage prolonged high temperatures
- Same enclosure for INS, IMU, INSD, and GPS (this is more for my sake, but still)

More info soon!

I love drag racing. It's pretty cool to boil down the performance / racing problem to "how much power can I apply, how s...
04/25/2026

I love drag racing. It's pretty cool to boil down the performance / racing problem to "how much power can I apply, how soon, and for how long". You get to also avoid the complexities of other types of racing and just focus on the core thing of how you get a big chunk of mass from one point to another as quickly as possible.

Over the years I've seen a lot of *really* smart people, do *really* smart things with less than ideal tech.

You know what I'm talking about. Yeah *you*. I'm talking about using timers as the backbone of control strategies for drag racing.

It's 2026. You can use an Obsidian INS and add or remove power based on distance.

What's notable here about these two logs (that you're probably trying to squint at on your phone) is that the Speed, Distance, and Time are all generated *automatically, without a start trigger* from an Obsidian INS.

I did a little math here to calculate the errors from the time slips (from the track) after accounting for a rollout distance of 12". Two different runs with a max total deviation of +27.5ms to -19ms [milliseconds]. I even suspect that there is a way to improve that accuracy, but more on that later.

You may notice here that I'm calculating the split times here (see `ins_x_time`) in MoTeC i2. However, there's good news for you since you made it this far. As of INS Version 60, you will now be able to receive these split times and speeds and have a user configurable rollout distance.

So, go drag race, get an INS, do something sporty with it! Thanks for the data and slips !

It’s been entertaining doing experiments with laser engraving. I added this QR code user manual. Maybe more people will ...
03/08/2026

It’s been entertaining doing experiments with laser engraving. I added this QR code user manual. Maybe more people will read it. Maybe?

I realized that I just shipped out the 100th INS I’ve ever made to T1 Race Development as a part of a normal stock order...
10/11/2025

I realized that I just shipped out the 100th INS I’ve ever made to T1 Race Development as a part of a normal stock order for them.

The sensor has found its way in to various vehicles (motorcycles, cars, boats, helicopters, and even planes).

The sensor has gone through many iterations of hardware and firmware, and will continue to, forever.

Here are some photos of the evolution of the sensor.

It makes me real proud to see it come as far as it has.

Thank you to all of the customers and/or friends that have put your trust in me over the years.

Here’s to the next 100 🍺

400hz pose estimation data is here! (if your logger can handle it)
10/06/2025

400hz pose estimation data is here! (if your logger can handle it)

Such a lovely thing to see good work done by the good folks at on my GC project. It’s so nice to see the thought put in...
09/01/2025

Such a lovely thing to see good work done by the good folks at on my GC project. It’s so nice to see the thought put in to the cage that they installed in my car. Really feeling excited, happy, and thankful for the opportunity to build a track car for myself again! Looking forward to having something more than an engine simulator and a laptop to play with neat motorsport hardware!

SANDERNET is coming to a race car near you. Or maybe not. Although, it sure is nice to see it coming together. This is a...
08/17/2025

SANDERNET is coming to a race car near you. Or maybe not. Although, it sure is nice to see it coming together.

This is a self hosted VPN / client that allows me to virtually connect to any ECU (via USB or Ethernet, including IPv6…) as long as this device (pictured with antennas) is in the car.

It is essentially the same as being “on site” with my laptop. Except without the issue of sweating my ass off while squinting at my screen in some remote racetrack in the middle of nowhere.

I’m still working on some issues around multiple static IP (Bosch / Cosworth / Emtron), and stability when cellular connection only.

This will also be an integral piece of the RTK corrections for the INS Pro whenever I get to that part also.

Long live “because” projects.

Have you always wished that MoTeC’s CAN Inspector was more useful? Where you may be able to filter based on CAN ID? Or e...
06/28/2025

Have you always wished that MoTeC’s CAN Inspector was more useful? Where you may be able to filter based on CAN ID? Or evaluate CAN Bus load? Me too.

I wrote a simple tool to display recoded data from both MoTeC’s CAN Inspector (.asc format) and PCAN-View (.trc format). Maybe you’ll find it useful for something.

Maybe not. Either way, it’s here: www.github.com/belt-sander/motec

Happy Saturday.

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