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May 31, 2021 6 tweets 3 min read Read on X
Some more fun with radar-less Model Y (thanks @spleck)

First we laced a brown box with foil (for great radar response) and tested my model X on it (FW 2021.4.18)

It rammed it like nothing, but we did get an FCW.
Internal telemetry view (no radar overlaid because it makes the picture too busy)
One frame from radar view.
From it we learn the box is reported as a vehicle, but existence probability is only 30% and obstacle probability is 60%
Now enter model radar-less model Y (FW 2021.4.15.11)
the recording angle is somewhat restricted, but the env is same as above.
The box is rammed without any hesitation. No warnings.
So let's attach out trusty Sir Steady to the box and see how does autopilot perform?

Pretty good actually. Sees the "pedestrian" from very far away and slowly brakes to stop for him.
Now, let's try the same thing on manual. Given the pedestrian is believable enough for AP to act on we we hoping for some warning or at least AEB, but... nothing. Not a peep despite display still showing the pedestrian on approach from afar.

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More from @greentheonly

Jun 17, 2023
Impressions after nearly 600 miles on 11.4.3 with Elon mode (could not get a non-Tesla car to try in time).
It went much better than the prior experiment obviously.
Many contributing factors. I was not as late so I did not mind as much (still ended up 5 minutes late solely
because of FSD foolishness).
So I was more tolerant towards the constant flow of cars passing me on the right and merging in front of me.
It also helped that I did not need to watch for the dreaded nag.
Overall I spent a bunch of time thinking about it and came up with this:
If the car did not need my attention - I'd just plan for late arrival as much as possible and don't care of many of the current very annoying deficiencies.
They are only this annoying because I actually have to watch the car and so I notice them, as they greatly diverge from my
Read 11 tweets
Jun 13, 2023
Paging all hw4 radar deniers, I guess.

What is the first thing you do when you get a HW4 car? You take it apart of course ImageImageImageImage
ImageImageImage
Like really-really take it apart.
Because FCC pictures are... low res ;)
And old too. ImageImageImageImage
Read 6 tweets
Mar 30, 2023
So I decided to look into how Tesla does alternate routes (I know, late) fully expecting to see they just get a few alternatives from Google and that's it and... nope, there's nothing like it!
Instead they grab a route from google (if online nvigation enabled), and then feed that into tesla maps service (in the cloud). And that maps service returns possible alternatives (deduced by unknwon means). But that's not all!
A lot more interesting is that in addition to that they also query that service for "what are the parking lot outline at my location" and "hey, for this route I have, what else do I need to know".
Read 10 tweets
Mar 26, 2023
Now that HW4 is widely available I got some firmware samples and discovered that:
The shipping version is internally called 2-SOC and has two possible camera layouts. The current one or the expanded one with added surround view cams (front bumper and two more)
The cameras run at 2880x1876 and run at( up to?) 45fps.
The main and backup cameras differs from the rest of them (and main and backup are a bit different too). vendor TBD.

new GNSS is Teseo V based.

Radar is confirmed ethernet or 192.168.90.110 internal IP.
But a lot more interesting is the 3-SOC version that seems to be up and coming? The camera layouts for that remain same though some internal deserializing routing differs.
There was a rumor that with the GPU in place heat output increased and HW4 was curtailed, so may be this is
Read 5 tweets
Feb 15, 2023
I am sure you are all eager to know more about HW4, so I am going to show you the refreshed car computer from a Model X. Just don't tell anybody you saw it, because it's really a secret still.
This unit made appearance at the EPC about a month ago, but the picture was hidden.
Looks like Tesla started to build cars with it but does not deliver them yet, I imagine the plan is to announce on March 1st that all cars off the line are already having it.
To start with sorta bad news, The form-factor is totally different, so definitely no retrofits on this one.
top/left is new unit, bottom - current plaid unit)
Read 19 tweets
May 24, 2022
2022.16.0.2 #TeslaReleaseNotes:
- Media Player accounts (e.g. Spotify lgn) are now linked to your driver profile (Not in China)
- (some) Model 3/Y in NA: Blended brakes (Your vehicle can now automatically apply regular brakes for consistent deceleration when regenerative braking)
- Energy prediction for your route has been improved by incorporating forecasted crosswind, headwind, humidity and ambient temperature when using online navigation.
(only in places with weather forecast (aka China?))
- China-only - Tesla Mic improvements.
Looks like the remote camera view is there for legacy s/x (not sure if activated yet)
Seemingly support for BT controllers is in the wings too

New "congestion at Supercharger", trip reroute and "wind on route" icons
Read 4 tweets

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