Comma AI self driver assistant

[B177y]

I got my Comma 4 last night @Ajzride was a huge help and great resource. It's amazing I'm super happy with it as a first time Comma user.

Oh man, I didn't need to see this... Love the small screen compared to my 3x.

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[B177y]

I tried to write a summary on getting things going on the C4, let me know if anyone thinks of something I should add:

https://bluepilot.dev/2025/12/17/bluepilot-on-the-comma4/

Excellent info. Allows me to not want to immediately upgrade to the small screen.

 

[Ajzride]

Oh man, I didn't need to see this... Love the small screen compared to my 3x.

You give up all the UI goodies though.

 

[B177y]

You give up all the UI goodies though.

Yeah, after reading your follow up post it's worth waiting or keeping the 3x until it becomes obsolete.

 

[DIEProphezeiung]

Yeah, I'm going with bad comma3x. I've had it up and running for almost a year with little to no issues until recently. I originally had a modified (extended with resistors) Ford Q4 harness. Bought a new harness and lightning adapter to eliminate that. So I have all new everything except the comma3x itself, which was bought on black friday last year.
Suppose Ill get a support ticket with them started.

It turns out it was the Comma3x that was faulty. Got it sent in a few days before the warranty expired, and they ended up just sending me a new device. I know this because it has a different ID and doesn't show my previous trips. I also have the new harness installed with the lightning adapter, so I can't confirm if the old modified harness is what caused the issue in the first place, but everything is working now. Thanks for all the help with troubleshooting.

That being said, I do have a question about ping-ponging on BP5.0. I reviewed the thread again after the BP5 release and haven't seen it mentioned. Apologies if it's already been asked, but are there settings that can curb the ping-pong I'm experiencing? I have reviewed the settings in the comma, and nothing stood out as likely to help.

I just got the replacement comma installed yesterday, so I haven't changed any of the defaults after the fresh BP5.0 install, other than adjusting in-lane offset slightly.

Edit:
I see the sugestion to try different models now. I will check what model is loaded (firehose i think) and try and change it to WD-40 as suggested.

 

[Ajzride]

It turns out it was the Comma3x that was faulty. Got it sent in a few days before the warranty expired, and they ended up just sending me a new device. I know this because it has a different ID and doesn't show my previous trips. I also have the new harness installed with the lightning adapter, so I can't confirm if the old modified harness is what caused the issue in the first place, but everything is working now. Thanks for all the help with troubleshooting.

That being said, I do have a question about ping-ponging on BP5.0. I reviewed the thread again after the BP5 release and haven't seen it mentioned. Apologies if it's already been asked, but are there settings that can curb the ping-pong I'm experiencing? I have reviewed the settings in the comma, and nothing stood out as likely to help.

I just got the replacement comma installed yesterday, so I haven't changed any of the defaults after the fresh BP5.0 install, other than adjusting in-lane offset slightly.

Edit:
I see the sugestion to try different models now. I will check what model is loaded (firehose i think) and try and change it to WD-40 as suggested.

WD-40, Filet o Fish Liquid Crystal, North Nevada v2 should all be a big improvement over firehose. If you need to adjust tuning, Predicted Curvature Blend Ratio is the one to mess with:

https://www.f150gen14.com/forum/thr...fork-for-comma3x-openpilot.24241/#post-457708

 

[B177y]

It turns out it was the Comma3x that was faulty. Got it sent in a few days before the warranty expired, and they ended up just sending me a new device. I know this because it has a different ID and doesn't show my previous trips. I also have the new harness installed with the lightning adapter, so I can't confirm if the old modified harness is what caused the issue in the first place, but everything is working now. Thanks for all the help with troubleshooting.

That being said, I do have a question about ping-ponging on BP5.0. I reviewed the thread again after the BP5 release and haven't seen it mentioned. Apologies if it's already been asked, but are there settings that can curb the ping-pong I'm experiencing? I have reviewed the settings in the comma, and nothing stood out as likely to help.

I just got the replacement comma installed yesterday, so I haven't changed any of the defaults after the fresh BP5.0 install, other than adjusting in-lane offset slightly.

Edit:
I see the sugestion to try different models now. I will check what model is loaded (firehose i think) and try and change it to WD-40 as suggested.

For me, WD-40 is consistently the best model. I have tried FoF and North Nevada v2 on @Ajzride's recommendation with BP 5.0, but I get side to side drift/ping-pong with both of those models. For whatever reason, WD-40 is rock solid on my Lightning.

 

[EVO]

WD-40 works best for me.

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