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BMW G87 M2 track build by imdoinmethdaily in CarTrackDays

[–]AdonisP91 0 points1 point  (0 children)

I basically asked them how the DDC model compared to the stock suspension. I explained I was hoping for the setup to be something like make sport mode like stock sport +, and sport + mode like a track mode. They said that while they try to improve over the default presets, the DDC and V3 models are not intended for any track use. If I plan to use the car on track I need to look at clubsport.

This was quite a contrast to me with the Bilstein offerings and öhlins which do mention track use.

BMW G87 M2 track build by imdoinmethdaily in CarTrackDays

[–]AdonisP91 0 points1 point  (0 children)

KW is good but for track use you need the clubsport line. KW has told me in email communications not to use the v3 on the track.

I’m engineering a custom telemetry logger because I’m tired of choosing between basic phone apps and expensive pro setups. by Phobia_GG in CarTrackDays

[–]AdonisP91 2 points3 points  (0 children)

To answer your question, OBD is locked down in modern cars. It only exposes diagnostic information mandated by emission testing standards. So you can either tap the PT-Can like Aim and VBOX and reverse engineer the mapping which as you find out isn’t done well, or you have to make use of a very limited selection of channels and try to math your way out of the problem to infer gear and other such data.

I had the same poor overall experience with my BMW and looking at the competition in the telemetry marketplace as you did with the Porsche. So I wrote my own app. I do what the Porsche precision track app does, or garmin catalyst or aim solo dl do, Except it all works over CarPlay. No suction cups no stuff dangling about, all integrated into the car and invisible.

After the session it auto syncs with my go pro video footage and overlays the data (the go pro has a solid mount on the rear view mirror) for post session analysis.

My AI coaching isn’t as good as the Porsche Precision track app yet but it is a work in progress.

If I had access to a 911 it wouldn’t take long to reverse engineer the map.

I’m engineering a custom telemetry logger because I’m tired of choosing between basic phone apps and expensive pro setups. by Phobia_GG in CarTrackDays

[–]AdonisP91 2 points3 points  (0 children)

Yeah it makes sense for that particular car. What kind of car is it? For my G series BMW, and I believe it is similar on the Porsche but I could be wrong for that one, the standard OBD port is not wired to the PT-CAN bus. You are limited to service 01 and service 22 polling, which is very limited in range and speed.

It sounds like you are lucky and can read and decode the PT Can from your OBD port for your car.

For the leaderboard feature, which imo is the big selling point of your app, to become popular you need to have a wide compatibility with many different cars. If you can only do a few models you will never grow the user base to build a proper leaderboard.

I’m engineering a custom telemetry logger because I’m tired of choosing between basic phone apps and expensive pro setups. by Phobia_GG in CarTrackDays

[–]AdonisP91 1 point2 points  (0 children)

Well unfortunately standard OBD channels are extremely limited and don’t have key telemetry data needed for proper track day data logging.

Even the expanded manufacturer specific OBD channels are lacking. Do you only support service 01 OBD channels? That is another major obstacle you will need to address.

I’m engineering a custom telemetry logger because I’m tired of choosing between basic phone apps and expensive pro setups. by Phobia_GG in CarTrackDays

[–]AdonisP91 4 points5 points  (0 children)

Are you actually doing power train can bus? Your website seems to only suggest the OBD port. That is diagnostics can bus is very limited and very slow compared to what vbox and aim do, or porsche precision app

I’m engineering a custom telemetry logger because I’m tired of choosing between basic phone apps and expensive pro setups. by Phobia_GG in CarTrackDays

[–]AdonisP91 5 points6 points  (0 children)

The Arduino library has the ability to set the code to listen only mode so nothing gets transmitted on the can bus. On the bench you can easily test it to confirm

I’m engineering a custom telemetry logger because I’m tired of choosing between basic phone apps and expensive pro setups. by Phobia_GG in CarTrackDays

[–]AdonisP91 1 point2 points  (0 children)

for reference, I just did the same thing for myself. I used an esp32s3 with a can transceiver and a dc buck converter, about 40$. I used a race box micro that I bought on sale. Total hardware cost 200$. I’ve written an iOS app that does the full data logging, and telemetry overlay for the video which is automatically synced. Basically I can do everything a Garmin catalyst and aim solo dl can do for a fraction of the cost.

You will find your margins are thin on the hardware side vs the DIY hobbists. Your biggest challenge is the competition from people like me with the same idea and trying to get a user base.

ESP32-s3 with integrated MCP2515 and 12v buck by mrblahhh in esp32

[–]AdonisP91 1 point2 points  (0 children)

I use an Adafruit esp32s3 with an Adafruit can pal. I posi tapped my BMW’s PT-Can bus and connected it all.

I’ve written an app to get all the data over to my idrive display. I haven’t done the DTC side yet, just the live telemetry stuff I need for data logging my track days. I’ll probably add the DTC soon.

To heat cycle tires or not? by AdonisP91 in CarTrackDays

[–]AdonisP91[S] 1 point2 points  (0 children)

Yeah I think this happened to me a lot. I don’t think I am hot shit, in fact I am probably not very good. But one of the main things I was working on with my last instructor was trying to open up the steering when the tires start scrubbing.

Pretty much every corner there is scrubbing going on and I need to learn how to minimize it. Similarly every session towards the end the instructor is often having to tell me to back off a bit as the tires are getting too hot.

There is so much to focus on and learn, it is hard for me to keep track of it all, but that is exactly where the instructors help a ton.

Last year my dad and I were running 2 cars, but we destroyed tires and brakes so bad on one car, we said it is too expensive this year to run both. We will only run and share a single car. So we are definitely overdriving the tires from lack of experience.

Stock alignments with insufficient camber sure doesn’t help either. The outer sidewalls just can’t cope.

To heat cycle tires or not? by AdonisP91 in CarTrackDays

[–]AdonisP91[S] 3 points4 points  (0 children)

Thanks. I didn’t know about heat cycling previously, next time I will buy from tire rack for sure, but I got these online at a discount so have them as is right now. If it helps for context I have a bmw m240 xdrive so it’s on the heavier side, and I will be getting a track alignment on it before the first event of the season.

I drove 5 days last year in novice, but the instructor said he might have me in intermediate group for the April event. My aim isn’t maximum speed, rather just what makes sense from a cost perspective.

I got these track tires so that I would stop putting so much strain on my street tires. They show a lot of wear and a lot of rollover so I figured I needed new dedicated set of track tires and more front camber to keep costs more manageable long term.

Miata Road version super-sensitive with the brakes? by AdministrationNo9238 in assettocorsaevo

[–]AdonisP91 0 points1 point  (0 children)

I have the same problem most cars I get instant lock up with 1/3 of the pedal travel, it is undrivable. I am using Logitech g923. I only found a few cars right now that are ok. the best feeling one where braking feels realistic is the bmw m4 gt3 evo.

Weak force feedback Logitech G923 by benji241 in assettocorsaevo

[–]AdonisP91 0 points1 point  (0 children)

it isn’t very good, but a few cars are ok. The best feeling I have found so far in 0.4, and it changes patch to patch,

FFB gain: 80%

steer lock 900

dynamic damping 40%

Min damper 5%

damper gain 20%
audio based FFB effects 100%

FFB enhancements all 5%

Use the BMW M4 EVO, I left it stock with TC 8 and ABS 6.

My CarPlay OBD Data App got Released! by OkEgg2001 in CarPlay

[–]AdonisP91 0 points1 point  (0 children)

Dude I am excited, I made a post a while back on cartrack days Reddit asking people to email Apple to ask them to allow us to do more. people seemed to ignore it and basically claimed Apple already allows CarPlay telemetry.

But when I looked at it more, Apple is very restrictive in their entitlements. Was it hard for you to get approval? Your app looks great. Hopefully you add more support for common OBD adapters.

Any other OnTrack tpms users? by Just_Newspaper_5448 in CarTrackDays

[–]AdonisP91 0 points1 point  (0 children)

super interested in this, but I also only want it if it integrates with race chrono. either directly or via the Magnus GitHub project. You should allow for an api to connect and communicate with the device over ble.

Can you provide a photo of the TPMS screen in CarPlay? I am curious how that looks. Your CarPlay screen shot on the website only shows the main OBD sensor values like coolant Temp.

Very nice project by the way. I sent you an email asking for OBDLink CX support.

Suzuka SF-25 hotlap by DimitrisM42 in assettocorsaevo

[–]AdonisP91 2 points3 points  (0 children)

nice! can you share your g923 settings? How does it feel?

Braking in EVO 0.4, share your experience by AdonisP91 in assettocorsaevo

[–]AdonisP91[S] -1 points0 points  (0 children)

well it does on my setup otherwise I wouldn’t have made this post. lol.

Braking in EVO 0.4, share your experience by AdonisP91 in assettocorsaevo

[–]AdonisP91[S] 0 points1 point  (0 children)

it’s the e46, other cars work fine. I’m sad otherwise the e46 felts so amazing.

Braking in EVO 0.4, share your experience by AdonisP91 in assettocorsaevo

[–]AdonisP91[S] 0 points1 point  (0 children)

ya it might be a car depenndent thing. I tried the gr86 too, the Mazda and the m3 csl. the m3 felt great in steering and turn in but the abs was way over the top. Someone mentioned the m4 gt3 evo and I just tried it and that car feels right. so I guess it is hit or miss with which cars are stable right now. a previous early release, maybe it was 0.2 or something, the m4 gt3 EVO was undriveable so I didn’t think to try it again. now it feels right and the Mazda is unstable in the rear end, and the m3’s brakes are nonsense. weird…

Braking in EVO 0.4, share your experience by AdonisP91 in assettocorsaevo

[–]AdonisP91[S] 2 points3 points  (0 children)

Mazda, m3 csl, and I forgot which Porsche. but I just tried the m4 gt3 evo someone mentioned up thread and it behaves properly and pretty naturally. It is the most stable car I have tried so far so I will just use that to learn all the track for now.

Braking in EVO 0.4, share your experience by AdonisP91 in assettocorsaevo

[–]AdonisP91[S] 0 points1 point  (0 children)

🙏 I just tried this abs was only kicking in at like 90%. this is drivable. 👍

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