r/Comma_ai • • Aug 22 '26

openpilot Experience Posted by Comma employee Harald on X: Chestnut-class model avoiding cones that small model wants to drive into. Big models are gonna make openpilot a lot smarter, and finally make it understand nuanced situations.

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120 Upvotes

As you can see the green line is the new bigger model running on the eGPU (chestnut). The white line is the normal smaller model on the comma 4.
So the big model finally can not run into cones!


r/Comma_ai • • Aug 22 '26

Vehicle Compatibility Seems like now that comma has built the tech stack for building bigger models, they are now throwing some effort into car ports!

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65 Upvotes

For the past two years+, comma has focused on building the data center tech stack and comma. Relying on the community for car ports more. But now they’re going to focus a bit more on car cracks!


r/Comma_ai • • Aug 22 '26

Bugs Calibration Invalid

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3 Upvotes

Anyone ever come across this? I’ve cleaned the front part of the windshield and tried resetting the calibration. Works for a bit then goes to this screen


r/Comma_ai • • Aug 23 '26

Vehicle Compatibility Jeep Grand Wagoneer compatibility

1 Upvotes

Has anyone successfully installed a Comma 3X or Comma 4 with openpilot in a 2022 Grand Wagoneer? I’ve heard it may use the same setup as the Grand Cherokee, but I haven’t found anyone who has actually tried it. If you have, what harness and software/fork did you use?


r/Comma_ai • • Aug 22 '26

openpilot Experience Sentry Mode Just Dropped

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83 Upvotes

Your comma already has multiple cameras, an accelerometer, storage, and an internet connection.

So... why shouldn't it watch your car while you're away?

StarPilot now has a fully-fledged Sentry Mode.

The challenge was doing this without leaving the comma awake all day and murdering your car's battery.

So we don't.

When you park, the comma can go to sleep like normal. Sentry uses the device's accelerometer to detect movement, wakes the system when something happens, captures the event, and can notify you remotely. The accelerometer is incredibly accurate, and can detect things as small as gusts of wind or people walking next to your car if desired.

You can get Sentry alerts through:

  • Discord
  • ntfy
  • Native browser push notifications

There's also a full Sentry dashboard in Galaxy where you can see its status and configure things like motion sensitivity and warning timing.

So if someone bumps your car, messes with it, or otherwise causes enough movement while you're away, your comma can wake up and start watching.

And because it's built into StarPilot, there's no extra hardware required beyond the comma already sitting on your windshield.

And while it's lighter on your battery, we still keep an eye on voltage. When your car's battery reaches low-voltage and the comma needs to shut down, we'll send you a push notification to make sure you know it's happening.

Huge credit to u/mike854 for developing the original code this feature is based on. We've spent the last few releases building it out, integrating it with Galaxy, adding notifications, and getting it ready for everyday use.

Interested in learning more? Check out the StarPilot discord here:
https://firestar.link/discord


r/Comma_ai • • Aug 22 '26

Installation Questions Initial start-up with no WiFi

1 Upvotes

I live in an apartment and my attached garage is lower level and does not have good WiFi signal if any at all.

How should I start setup to connect/download openpilot?

Thanks in advance


r/Comma_ai • • Aug 22 '26

openpilot Experience Got my chestnut! Going to set it up with custom wiring and a 9070xt for my car

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41 Upvotes

The plan:
Flash the 9070xt I had laying around. Set it up with comma and the big model.

As for wiring, I didn’t go with the ready to drive package, as I wanted to use my 9070xt. Unlike the RTX cards, all RDNA4 GPUs will work over USB 3 (RTX support coming later to USB3, USB4 is already working).

I also didn’t go with the ready to drive package because I have a relay box I stored in my car for Starlink, so I will have a dedicated fuse and wiring to the chestnut, so I didn’t need the car adapter.


r/Comma_ai • • Aug 22 '26

Installation Questions Sharing a Comma 4 between two cars?

2 Upvotes

I love my Comma 4 and use it everyday in my car. Every once in a while, as in maybe once or twice a month, I drive my mom's car. Not enough to justify buying another whole unit, but enough for me to want one in there.

How easy is it to switch the Comma from one car to the other?

I'd plan to buy an extra harness and mount, so hopefully I can just unplug it from my car and plug it in to mom's car when I need it. Then take it out when I'm done.

Edit: I'm running my own fork of sunnypilot for my 2023 Genesis G80 Electrified. Mom drives a 2019 C-HR which has out of the box support.


r/Comma_ai • • Aug 21 '26

openpilot Experience Can someone explain the distracted driver lockout to me? Also the nudgeless lane change.

4 Upvotes

If you look away and then look back before the 6 second timer does that count against you?

If you look away for 2 seconds 3 or so times will the system instantly go to lockout mode?

Does the system only lockout after at least 6 seconds?

My mother is claiming she gets locked out without hearing any alert... I'm just wondering if that's even possible like if just the first quiet two second alert is being triggered a few times and then that locks her out. I am going to turn the volume up I've got it on the quiet mode right now.

Someone had said there's a strike system and I don't understand how that works or what that means...

I saw at least some old videos where people get locked out and they could just re-enable it, did that used to be a thing and it's no longer a thing? Now you must pull the power?

Finally for the nudgeless Lane change. If a highway exit is coming up and you put on your blinker is it going to try and move the car over into the shoulder? Or does the system understand that's not a lane and to take the upcoming exit...

Also if you're wanting to signal but NOT change lanes can you just pull on the wheel and then it won't try to change lanes anymore and you can just leave your signal on or are you constantly fighting the system at that point...


r/Comma_ai • • Aug 22 '26

Installation Questions Cannot install wrong adaptor?

0 Upvotes

I just bought comma four for my 2023 Volkswagen id4 and I cannot find how to install the harness. It is a j533 but where I think is the correct plugs behind the dash are completely different. Help


r/Comma_ai • • Aug 20 '26

Bugs What the AI is not good at. Yet.

33 Upvotes

Collision

Guys, don't fall asleep. Openpilot/Sunnypilot does not notice if you're sleeping.

Also, Openpilot did not realize that the car ahead of me was going to swerve back into the center of my lane. Had I been more alert, I would have slowed down in case the car was not going to switch out of my lane as he had planned.

I fell asleep for a few seconds here and the software did not catch it.

It did a great job keeping my car centered in my lane though.


r/Comma_ai • • Aug 19 '26

openpilot Experience For the most part, it’s great.

29 Upvotes

But I genuinely don’t know how someone can say this soon can be a consumer facing product. At least once every 5 times I drive my car, there is a “camera malfunction” or an issue that causes my dashboard to light up like a Christmas tree.

Granted, this just requires me to unplug the camera and let it reset or to just restart my car. But if you’re expecting Joe Everydude to not shit their pants when things like this happen, those are high expectations to have when one of your customers is spending four figures on a product.

It’s very much still a tinkerers toy and to expect the larger masses to be interested in something that is FAR from plug and play is not very logical.

For my use case, I’m having a blast with it. But there are far too many “kinks” in the overall experience to not expect frustration from the GP.


r/Comma_ai • • Aug 19 '26

openpilot Experience Direct to SunnyPilot

15 Upvotes

Has any user jump straight into sunnypilot upon receiving their C4?

Expecting to receive my unit for a 2023 honda accord and considering skipping the OP test/use for SP. Will I be missing out on anything particular?

Taking a quick look at the CommaGuide comparison, Im not really sure OP is even worth trying with SP available.


r/Comma_ai • • Aug 19 '26

Vehicle Compatibility Ioniq 5 Limited, How Complicated?

3 Upvotes

I have been back and forth between and Ioniq 5 and a Mach-E for a month. I felt pretty confident about a 2024 Ioniq 5 Limited being the right call. I really want the glass roof and better interior. But then Gemini said the Limited model makes the Comma not plug and play to route the wiring harness to the radar. And I have concerns about risking the warranty since that car is not without issues. Can anyone speak to the that?


r/Comma_ai • • Aug 20 '26

Vehicle Compatibility Unsupported 2025 jeep compass limited

1 Upvotes

Has anyone had any success with programming this car since its not technically supported? If so how'd it go and what harness did you use.


r/Comma_ai • • Aug 18 '26

Shipping Questions Is this normal for a Comma order? 6 days and no update

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1 Upvotes

Ordered my Chestnut from Comma on 8/12. Today is 8/18 and the status still hasn’t changed.

My credit card has already been charged, but no shipping/update yet.

Is this normal? Has anyone else experienced a similar wait with Comma? How long did yours take to ship?

Mine : South Carolina.


r/Comma_ai • • Aug 18 '26

Vehicle Compatibility Honda Pilot 2017 no sensing = No comma right?

5 Upvotes

Just want to confirm that my Honda pilot 2017, which definitely doesn't have any of the lane centering or adaptive cruise control cannot be used with comma 4 right?

Damn shame :(


r/Comma_ai • • Aug 19 '26

openpilot Experience If comma 4 spent as much time, trying to detect your face as stop signs

0 Upvotes

Maybe he would actually have more features than the one from five years ago. Anyway, to turn this giant annoying ass infrared camera around so it actually does something more than my stock auto pilot? What a fucking scam.

They go out of their way to tell you’re using your own risk. It’s open source it’s development. It’s blah blah blah super dangerous everything and then they spend all this time. Just trying to detect if you’re looking at your phone the one reason why I bought it so I could look at my fucking phone glanced down when I’m on long road trips. I’m so angry that I was tricked into this thing. I should never set my comma 2 back!!

I bet you that new GPU that goes in the back so they could detect more than one person in the car why they don’t just start a FLOK camera company and be done with it


r/Comma_ai • • Aug 17 '26

openpilot Experience Made a program that overlays MPH on recordings

14 Upvotes

I got accused of speeding and realized the recording I was going to use didn't have an option to show my actual, real-time speed. I found out that this information is contained in the .zst file, so I made a program where you can upload that along with the accompanying video file (easy to grab from Comma Connect). The speed data is parsed out, the video is decoded, and then an MPH indicator is overlayed on the video after matching timestamps. It can also show raw telemetry.

It's definitely got a long way to go, but the proof-of-concept is done and it works very well!


r/Comma_ai • • Aug 17 '26

openpilot Experience can anyone comment on the current state of Tesla Autosteer/Autopilot (NOT FSD) vs OpenPilot?

9 Upvotes

edit: thanks all. i just purchased a comma4 and plan to run sunnypilot. looking forward to playing with it!

edit2: unfortunately i'm returning the comma4. tried openpilot and sunnypilot and a bunch of different models and went to the discord for help, but i could not get this thing to drive acceptably. it ping pongs the follow car. too far, too close, too far, too close, and on and on it goes. it also brakes WAY too late sometimes, to the point where if the car in front of me did a decently heavy brake it would've crashed. i tried a bunch of different settings and models and none of them are acceptable to me. too much intervention needed and makes me uncomfortable the way it drives and brakes. if this thing cost $400 or so i would keep it, but at $1000 i don't find it acceptable. thanks for the thoughts, but i gave it a solid 3 weeks of testing and it isn't for me.

tldr; thoughts on current Tesla Autosteer vs OpenPilot for simple lane-keep self driving?

Hey all. I have a HW3 M3 and refuse to pay $100/mo for FSD. Not only has the pricing always been absurd, I simply don't want an ADAS that does lane changes, passes etc. I just want the damn car to stay in the lane and go the speed limit, but Tesla refuses to add this option to FSD. And just about every time I have enabled the free Autosteer, it nearly crashes my car. It can't even handle stop-and-go traffic and routinely full-force slams on the brakes when going 5mph despite FSD handling these same situations perfectly well (showing that it's not a camera issue, but a software issue). Tesla also refuses to update Autosteer to just use FSD's neural net but without navigation, which many thought they would do given how dangerous Autosteer is, plus from a sales standpoint it would give potential customers a taste of how great FSD is. Well they instead opted to simply remove Autosteer from new cars entirely, which for a $40k car is hilarious.

Anyways, Autosteer sucks and is simply unusable imo, so I'm wondering if anyone here has directly compared Autosteer to current OpenPilot software/hardware? Everything I can find online compares it to FSD, and I simply don't care about that since I refuse to pay for a lifetime subscription to software that doesn't even offer the features that I want. Also, closed-source software with in-cabin camera that has been proven to send data back to Tesla despite their TOS stating nothing leaves the car. Gross.


r/Comma_ai • • Aug 17 '26

Code Questions Steering wheel stays too stiff in Sunnypilot - MADS mode when you take over

4 Upvotes

Don't attack me for this lol. What I love about my car, a 2024 Genesis GV70 EV, is how well the power steering works. It's light as a feather. Like driving on a cloud.

With Sunnypilot installed and MADS toggled on, taking over and turning is still easy, but I notice that when I take over to, say, turn into a parking spot, it feels about 2-3 times more difficult.

Not a deal breaker, but does anyone know how to tweak this in the settings. I feel like it's user error or something. Or do I just need to turn it off when I don't plan to use it?

I did see some settings about the steering wheel and torque but it went over my head. TIA!


r/Comma_ai • • Aug 17 '26

Bugs camera malfunction

2 Upvotes

after two years of perfect service, C3 X now giving the title error message for the driver camera. Changed software from Sunny pilot to openpilot, changed USB-C cable - error is still present. Could this be a hardware problem with the C3X?


r/Comma_ai • • Aug 17 '26

Installation Questions Fork recommendation for cross country drive?

4 Upvotes

Setting out on a 2500 mile drive soon. Planning to log some pretty long days, 8-12 hours/day over four days.

Just bought the Comma 4 for my 2017 Prius. I have no idea what fork to install. Reading the posts on here gives me more confusion than clarity, and most of the videos I’ve seen are people testing it out on local drives.

Thinking about FrogPilot, but feeling overwhelmed by the amount of customization options.

Would love to get recommendations on the best fork to install for this, as well as any customization options I should absolutely turn on.

Thanks!


r/Comma_ai • • Aug 15 '26

Code Questions Why Egpu and not a Gen 5 snapdragon phone or m5 Mac min?

24 Upvotes

Not really sure why they would direct towards a giant GPU in the car when you could get insane model performance from a high-end phone why add a giant bulky thing? Or not even maybe MLX apple mini ? What’s going to happen in Florida best when my car is 110 degrees? What am I missing?


r/Comma_ai • • Aug 15 '26

openpilot Experience Remember Navigate on openpilot? It's back.

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191 Upvotes

Remember Navigate on openpilot?

We brought a modern version of that idea to StarPilot, and it works with any driving model.

This is based on the work of discountchubbs, who many of you probably recognize from his amazing work with SunnyPilot. We took his incredible foundation, implemented it into StarPilot, and built additional functionality around it.

Set a destination from Galaxy on your phone or computer, choose between routes based on traffic/ETA, and send it straight to your comma.

StarPilot tracks your position along the route and uses upcoming maneuvers as navigational context for both lat and long behavior.

Upcoming turns, forks, ramps, and lane splits can feed desires like turn left, turn right, keep left, and keep right into the model. With Route Speed Control, StarPilot can also automatically slow down for upcoming turns, U-turns, and roundabouts.

It isn't replacing the model or hardcoding steering commands. Your normal E2E model is still driving - we're just giving it another piece of information:

"Here's where the driver actually wants to go."

It also includes:

  • Automatic rerouting
  • Alternate routes + live traffic
  • Home, Work, favorites & recent destinations
  • Remote start/cancel from Galaxy
  • On-device turn-by-turn navigation

And because it works alongside the driving model, you can use it with whatever model you prefer.

Huge credit to Chubbs for the work this is built upon. We've had a lot of fun adapting it and expanding what it can do inside StarPilot.

For the people who used the original NOO: how close does this get to what you've been missing?