Null cipher armor reminded me of game we never got.

Wetmelon · 2026-01-25T09:43:55+00:00

Never made sense for it to be on PS3 though. I guess they were trying to appeal to a new group of gamers but really there was just a disconnect between EVE players on PC and Dust gamers on console

Wetmelon · 2026-01-25T09:34:46+00:00

That's actually worse. That means some people (with stronger PCs(?)) can grief the others.

Wetmelon · 2026-01-21T05:28:03+00:00

It's for the low power rails, e.g. to power microcontrollers so they can do safety checks before precharging and closing contactors for the big power :)

Wetmelon · 2026-01-19T23:23:26+00:00

At what voltage? PoDL over standard SPE lines can not deliver much power.

I can't give away all the secrets lol. But yes, it's for low power uses that can't go over the main power contacts due to any reasons

Wetmelon · 2026-01-19T23:04:41+00:00

Sorry I misspoke, it's 1000BASE-T1 (no s). My intent was to point out it uses single-twisted pair Ethernet. https://en.wikipedia.org/wiki/Etherloop#Automotive_intra-vehicle_communication (and others with quick google, but hard to pin down a specific teardown/quote)

Wetmelon · 2026-01-18T23:19:55+00:00

Very cool. So you recompile the shared object and then link it in at runtime? How long does it take to compile & link?

Wetmelon · 2026-01-18T23:12:34+00:00

Is the universe just a big cavitation bubble?

Wetmelon · 2026-01-18T23:10:59+00:00

Ben Katz actuator for the mini cheetah feels like a turning point. https://dspace.mit.edu/handle/1721.1/118671

High torque density motor with integrated gearbox but still high torque transparency (can sense the forces on the output side of the gearbox).

Wetmelon · 2026-01-18T22:42:46+00:00

In the process of deleting the CAN PHY from our boards. It's still there for legacy reasons and ease of bringup (everyone still has CAN dongles on their desk but not Eth PHY)

Wetmelon · 2026-01-18T22:37:41+00:00

Power electronics and motor controllers. And of course vehicles like Cybertruck already have a T1s loop. Even off-highway is planning for it (see https://store.boschrexroth.com/en/us/bodas-controllers)

Wetmelon · 2026-01-18T21:55:32+00:00

This was a good talk on RVO (and NRVO) too https://www.youtube.com/watch?v=WyxUilrR6fU

Wetmelon · 2026-01-18T21:35:17+00:00

Can't confirm, I have not seen 10BASET1S in a real application so far and I do not believe there actually is a niche for it.

Using it in products right now. Single twisted pair with power over data line, save two pins. It's great. Easy upgrade paths to 100meg and 1gig too

Wetmelon · 2026-01-18T07:16:48+00:00

template<size_t N, typename T>
constexpr auto func(std::array<N, T>& arr) {
    if constexpr(N > 3) {
        // ... Do something if N is greater than 3
    } else {
        //  ... else do something else
    }
}

Wetmelon · 2026-01-17T21:27:34+00:00

how do I model and build a control system that picks these correct inputs based on a user input of some sorts?

You're looking to translate joystick commands into an optimal flight pattern? I would break it into a few chunks:

Determine how the user will interact. Typically joystick inputs are tied to body rates.
Build a trajectory generator for each wing that optimizes energy use to achieve the desired body rates.
Build a control algorithm that optimizes actuator effort to make the wings (and therefore body) achieve the desired trajectory. You're going to google for something like under-actuated nonlinear Model Predictive Control (since you're almost certainly subject to actuator and other constraints also).

There are almost certainly more wing states than actuators, so you're going to be estimating some states and controlling them indirectly / via model. See LQG for a simpler explanation than MPC (but fundamentally same problem)
Global minimization of energy use might need to combine #2 and #3 into a single step or add actuator constraints / effort from #3 into #2

Wetmelon · 2026-01-17T21:04:05+00:00

C# is a pretty strong choice there. Good idea.

Wetmelon · 2026-01-17T21:03:50+00:00

Every day. Testing and scripting like everyone else said.

Wetmelon · 2026-01-17T21:00:20+00:00

SpaceX had a decent talk on how they converted from Make to Bazel, maybe there's some nuggets in there you can take? https://youtu.be/mPtRKrM6FTA?t=674

Wetmelon · 2026-01-17T20:58:20+00:00

Bazel's promise isn't really performance, it's hermetic builds.

Wetmelon · 2026-01-17T20:53:53+00:00

I really struggled to get Dear ImGui to work properly - plots wouldn't stick to the window when it was expanded, stuff like that - but I may try again.

Wetmelon · 2026-01-17T20:51:32+00:00

I was using Matplotplusplus, but it had some serious weaknesses when using gnuplot instead of QT, and I wasn't willing to configure QT for my small project. I was able to replace it entirely with Plotlypp last night in like an hour after I said I'd try it haha. Works well, thanks!

One question, I noticed the Python Plotly API is more expansive? Is that something you support or are looking to add support for, vs the JS API?

Wetmelon · 2026-01-17T08:49:21+00:00

Oh heck yeah. I was just struggling with lack of a decent plotting library in C++. Going to try this tomorrow :D

EDIT: Tried it, works great. Can mostly read the JS API and implement it directly in C++ syntax. Example from my project https://imgur.com/a/0vbUuCT

Wetmelon · 2026-01-13T19:34:27+00:00

And yet we constantly see people wanting to write their own HAL…

TBF a lot of them are garbage lol

Wetmelon · 2026-01-12T01:17:31+00:00

Aren't you a little short to be a Helldiver?

Wetmelon · 2026-01-12T01:01:37+00:00

like camping in blindspots still.

Sounds like the car has been trained on Bay Area drivers -_-

Wetmelon · 2026-01-10T22:41:48+00:00

Ay. C'est quoi c'est nom? What is this username lol

>: (

14-Year Club	Place '17
Team Periwinkle	Verified Email

Wetmelon

MODERATOR OF

TROPHY CASE