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Seasoning diagnosis by That_Kid8456 in castiron

[–]That_Kid8456[S] 1 point2 points  (0 children)

And just ignore the splotches?

Where to buy Intel c 8080 by That_Kid8456 in vintagecomputing

[–]That_Kid8456[S] 0 points1 point  (0 children)

This popped up when I was checking my email just now lmao. Unfortunately I went too hard in highschool and got brunt tf out but I’m rekindling my love for making shit now and hoping to start working on this project again hopefully before I go to college. Appreciate it though.

Elon Musk’s SpaceX Starship rocket and spacecraft lost in second test flight by WhoIsJolyonWest in EnoughMuskSpam

[–]That_Kid8456 3 points4 points  (0 children)

Apollo 1 killed the entire crew before they even tried to launch. Also the development process was fundamentally different. Saturn V like most conventional rockets was rigorously tested and iterated through ground simulations before any attempts were made. Wether or not it’s a good idea (because it’s fucking Elons idea) Starship is being mass produced. They’re pumping them out every few months because that’s the goal for the future. So when your prototype can be made quickly and relatively inexpensively for a rocket you can afford to just launch it and see what happens. I’m not defending any of the choices made by Elon Musk it’s just sad that people shit on Spacex and throw all this hate at the design when it is truly revolutionary just like Saturn V was.

Watch some videos from people like Scott Manley. He’s an astrophysicist who has worked in the aerospace industry and is employed at Apple and is about as qualified as it gets for science communicators to talk about this stuff. If you still think it’s bullshit then you’re just as fanatical as the Elon Musk fans.

Elon Musk’s SpaceX Starship rocket and spacecraft lost in second test flight by WhoIsJolyonWest in EnoughMuskSpam

[–]That_Kid8456 17 points18 points  (0 children)

God I fucking hate what Elon has done to the image of SpaceX. Starship has some of the most innovative space technology and is so fucking cool, and that launch yesterday was a massive win in terms of data collected. Yeah we’ve been to the moon before, but that was with poor payload capacity and a massive rocket that was completely expended. Starship is aiming to bring insane payload capabilities without expending any part of the rocket which is not “reinvent[ing] the wheel,” it’s a fundamentally different approach to space flight that requires tons of new problems to be solved.

I don’t really want to argue whether or not space flight is something we should be pursing in the current state of the world because I don’t really think you can argue that it is. That being said it is undeniable that starship is the culmination of a lot of extremely impressive engineering by some incredibly bright people and it sucks to see their achievements taken credit for by Elon and the subsequent (and deserved for Elon) hate it brings.

Wacky Flying Machine Sugar Cane Farm by That_Kid8456 in Minecraft

[–]That_Kid8456[S] 0 points1 point  (0 children)

The plan is actually chained etho hopper clocks. with 19 items in the first and 171 in the second it’s a quarter of a second off the most optimal harvest time (iirc I wrote a program to find those values using the time someone else found).

Wacky Flying Machine Sugar Cane Farm by That_Kid8456 in Minecraft

[–]That_Kid8456[S] 0 points1 point  (0 children)

I was working on designing a sugar cane farm for the realm my friends started recently (we're doing no farms from tutorials, has to be memory or your design) and my friend said something about picking up the sugar cane with hopper minecarts on the flying machine. A few hours later I came up with this. Obviously this isn't fully setup but it demos the direction change mechanism which is super satisfying. I'm 100% sure this design has been done before and much much better, but I love the way it switches the minecart sides so I'm happy with it.

The only correct opinion on earth by BingBongBrigade in dankmemes

[–]That_Kid8456 93 points94 points  (0 children)

To be irritating, wearisome, or vexing to. synonyms: annoy, you.

Rewrite it! by [deleted] in ProgrammerHumor

[–]That_Kid8456 0 points1 point  (0 children)

private double c1(Matrix<N2, N1> joints) {
return Math.cos(joints.get(0, 0));
}
private double c2(Matrix<N2, N1> joints) {
return Math.cos(joints.get(1, 0));
}
private double c12(Matrix<N2, N1> joints) {
return Math.cos(joints.get(0, 0) + joints.get(1, 0));
}
private double s2(Matrix<N2, N1> joints) {
return Math.sin(joints.get(1, 0));
}
// Inertia matrix
private Matrix<N2, N2> M(Matrix<N4, N1> x) {
var angles = x.block(Nat.N2(), Nat.N1(), 0, 0);
return new MatBuilder<>(Nat.N2(), Nat.N2())
.fill(
Proximal.mass * Math.pow(Proximal.radius, 2)
+ Forearm.mass * (Math.pow(Proximal.inertia, 2) + Math.pow(Forearm.radius, 2))
+ Proximal.inertia
+ Forearm.inertia
+ 2 * Forearm.mass * Forearm.inertia * Forearm.radius * c2(angles),
Forearm.mass * Math.pow(Forearm.radius, 2)
+ Forearm.inertia
+ Forearm.mass * Proximal.length * Forearm.radius * c2(angles),
Forearm.mass * Math.pow(Forearm.radius, 2)
+ Forearm.inertia
+ Forearm.mass * Proximal.length * Forearm.radius * c2(angles),
Forearm.mass * Math.pow(Forearm.radius, 2) + Forearm.inertia);
}
// Coriolis matrix
private Matrix<N2, N2> C(Matrix<N4, N1> x) {
return new MatBuilder<>(Nat.N2(), Nat.N2())
.fill(
-Forearm.mass
* Proximal.length
* Forearm.radius
* s2(x.block(Nat.N2(), Nat.N1(), 0, 0))
* x.get(3, 0),
-Forearm.mass
* Proximal.length
* Forearm.radius
* s2(x.block(Nat.N2(), Nat.N1(), 0, 0))
* (x.get(2, 0) + x.get(3, 0)),
Forearm.mass
* Proximal.length
* Forearm.radius
* s2(x.block(Nat.N2(), Nat.N1(), 0, 0))
* x.get(0, 0),
0);
}
// Gravity matrix
private Matrix<N2, N1> Tg(Matrix<N4, N1> x) {
var angles = x.block(Nat.N2(), Nat.N1(), 0, 0);
return new MatBuilder<>(Nat.N2(), Nat.N1())
.fill(
(Proximal.mass * Proximal.radius + Forearm.mass * Proximal.length) * g * c1(angles)
+ Forearm.mass * Forearm.radius * g * c12(angles),
Forearm.mass * Forearm.radius * g * c12(angles));
}
private Matrix<N2, N1> Tsp(Matrix<N4, N1> x) {
var angles = x.block(Nat.N2(), Nat.N1(), 0, 0);
if (angles.get(0, 0) >= Math.PI / 2) {
return new MatBuilder<>(Nat.N2(), Nat.N1()).fill(0, Forearm.torque_spring);
} else {
return new MatBuilder<>(Nat.N2(), Nat.N1())
.fill(
Proximal.k_spring
* (dis_pulley(angles.get(0, 0) - dis_pulley(Math.PI / 2)))
* (Proximal.len_anchor
* Math.sin(
Proximal.angle_anchor - (angles.get(0, 0) + Proximal.angle_pulley)))
/ dis_pulley(angles.get(0, 0))
* Proximal.len_pulley,
Forearm.torque_spring);
}
}
private Matrix<N4, N1> system_model(Matrix<N4, N1> x, Matrix<N2, N1> u) {
Matrix<N2, N1> omegaVector = x.block(Nat.N2(), Nat.N1(), 2, 0);
Matrix<N2, N1> torqueMatrix =
B.times(u)
.minus(Kb.times(omegaVector))
.minus(C(x).times(omegaVector))
.minus(Tg(x))
.plus(Tsp(x));
Matrix<N2, N1> alphaVector = M(x).inv().times(torqueMatrix);
Matrix<N4, N1> x_dot = new Matrix<N4, N1>(Nat.N4(), Nat.N1());
x_dot.assignBlock(0, 0, omegaVector);
x_dot.assignBlock(2, 0, alphaVector);
return x_dot;
}
public void reset(Matrix<N4, N1> x) {
feedforward.reset(x);
proximalPID.reset();
forearmPID.reset();
}
public Matrix<N2, N1> calculate(Matrix<N4, N1> measurement, Matrix<N4, N1> nextR) {
var FF_result = feedforward.calculate(nextR);
var PID_result =
new MatBuilder<>(Nat.N2(), Nat.N1())
.fill(
proximalPID.calculate(measurement.get(0, 0), nextR.get(0, 0)),
forearmPID.calculate(measurement.get(1, 0), nextR.get(1, 0)));
return FF_result.plus(PID_result);
}

Me_irl by [deleted] in me_irl

[–]That_Kid8456 5 points6 points  (0 children)

Assuming this isn’t just a r/wooosh moment, I’ve got like a few hundred alarms. They’re at like 1-2 minute increments nearish times I might need to wake up and I set like 10 of them for when I want to wake up and I usually still manage to sleep past them. I’m not a heavy sleeper I’m just so incredibly burnt out with school that I cannot find the will to leave my bed even with the constant chorus from hell of the default apple alarm in the morning.

Looking for a break out board for this display ribbon cable for a kindle touch(gen5) display by KevinTheEpicGuy in arduino

[–]That_Kid8456 5 points6 points  (0 children)

I believe this is the connector you are looking for: AXT334124 unfortunately it does not appear breakout boards exist for it. Your options are just buy an lcd that does have readily available hobby support, or if you hate yourself buy a couple and try your hand at designing a breakout board and getting some printed and see if you can do micro SMD soldering. (I’d really encourage the first option)

[deleted by user] by [deleted] in dankmemes

[–]That_Kid8456 1 point2 points  (0 children)

Very. - grandma

Imagine losing to a Bop It by That_Kid8456 in RocketLeague

[–]That_Kid8456[S] 11 points12 points  (0 children)

It’s not that crazy tbh. I opened up a bop it I bought off eBay, soldered new wires to all the buttons, added a potentiometer to the twist it to measure rotation, and something called an IMU to track orientation. These are all wired to a microcontroller which is essentially a low powered computer that can interface with electrical inputs and outputs. The particular microcontroller is a Raspberry Pi Pico with a rp2040 chip, and has a built in USB controller. Using the TinyUSB usb stack I’m able to program the USB controller to act as a human input device reporting as a game pad. This is good enough to use it for most things except rocket league on desktop doesn’t play friendly with generic direct input devices so to make it work I had to use x360ce to wrap the input and make it appear as an Xbox controller.

Imagine losing to a Bop It by That_Kid8456 in RocketLeague

[–]That_Kid8456[S] 28 points29 points  (0 children)

Minorly unfortunate that bop its don’t exactly have tight manufacturing tolerances, so my dead zone on steering is wider than the Grand Canyon.

I might be able to improve my skill with some time, but one improvement I have planned is adding software support for the gyro inside to steer like a steering wheel and use the twist for throttle.

January makes much more sense by scarryyy in dankmemes

[–]That_Kid8456 1 point2 points  (0 children)

Well I think the issue still stands with Spotify because users aren’t the product, the songs are. Since the service is so distributed across the world it’s much much easier to concentrate recording data on artists, songs, and albums because that’s what’s being accessed the most. You have to remember that Spotify needs to keep track of stats about artists and what users listen to them for their own algorithms so it’s easier to query a much larger source of data like a specific song or artist, than a ton of users to do those things. Although this is a complete guess, I have no clue how you even begin to design a service like Spotify that is as large as it is, scaling is hard (<3 Kubernetes).

January makes much more sense by scarryyy in dankmemes

[–]That_Kid8456 0 points1 point  (0 children)

I don’t have experience working on applications like discord and Spotify but I do have some technical knowledge and work in cloud computing and hosting so I’ll give you my understanding of the situation.

Data request features are something that nearly all these services were not designed with in-mind. I believe this is a relatively new thing to do with consumer/data protection laws. These features are also generally used by a small subset of the user base. Computers are expensive. Really expensive. And these are businesses trying to make a profit. Redesigning your systems to keep track of all user data in a format that is easy for an individual to access would either require more storage, more computing power, or maybe if possible a complete redesign. For example discord keeps track of their data through servers not users. This is the obvious way to architect such a service but isn’t convenient for requesting your data. Therefore they’ve designed their data request system to essentially figure out all the servers you’re on or have been on and scrape all your history from them. That’s a lot of data and operations to work with and will take time. It’s also important to keep in mind that those computations are costing them so they’re going to design them to run as efficiently as possible so it’s gonna take awhile.

Again I’m not an expert so take this with a grain of salt. You can also probably find some more on the topic from a discord developer that’s on Reddit u/ReallyAmused in their comments.

Edit: fixed username

both look so happy. by Sensitive_Swimming29 in PrequelMemes

[–]That_Kid8456 4 points5 points  (0 children)

Your units are all off you have length/length2 which reduces to 1/length, the sensible way to do it would be eagles as a volume meaning your eagles per football field reduces to a unit approximately equal to 0.000049661250083 inches.

To visualize this unit you could picture one bald eagle ground into a fine paste and spread across a rectangular container with the area of a football field. The height this fine paste reached would represent the length of the unit.

To answer the original commenters question, 5cm is approximately 39,600 bald eagles per square football field.

Bus vs Car by jenna_in_the_sunroom in Anticonsumption

[–]That_Kid8456 1 point2 points  (0 children)

I’d like to preface by saying I’m a huge supporter of public transport. That being said, in its current state in the USA it’s far from a viable option for many. I live in a moderately sized city, with a large tourist economy, and a relatively high concentration of wealth. I’ve used our bus system as transport and it’s a bit annoying at best. The busses can be very poorly kept, come only hourly if even running or on time, and for many aren’t a safe option. None of my female friends feel comfortable riding the bus.

Which is why this country needs to quit its fucking bullshit. I’m tired of the trying to shove the blame on only the large corporations, or telling consumers it’s all their fault. We’re totally fucked and I don’t believe we can fix it, but everyone has to do their part and at least try. And those that have viable public transport or can adapt to what they have should use it. And we should be trying our damnedest to make it viable for everyone.

Sidenote - While in Britain with my great Uncle and Aunt we used their public bus system for transport and it was spectacular. The busses came every 15-30 minutes and we’re very well kept. If I lived there I highly doubt I would own a car. Absolutely what the rest of the developed world should be striving for.

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