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TopicIt's been a while. How do you feel about common core math?
Yellow
11/04/23 6:35:33 PM
#39
Yeah I really don't mind criticisms of frameworks and methodology, even bad criticism, but I mean, people should be educated on the subject and come from a point of good intent.

If you don't understand common core then you can't criticize it. The subject is even more watered down when it comes from a news outlet that obviously came up with the criticism in a think tank.
TopicIt's been a while. How do you feel about common core math?
Yellow
11/04/23 6:20:16 PM
#37
SinisterSlay posted...
If the simulation uses single letter variable names and is written all on one line then they can go fuck themselves
Calculus is just a programming language. If you learn it you can convert it directly into code, for loops and everything. It was designed to be written by hand quickly, which is why it's so hard to read.

I learned just enough to convert some gross equations into code.
TopicIt's been a while. How do you feel about common core math?
Yellow
11/04/23 2:55:39 PM
#28
SinisterSlay posted...
Algebra in my day was taught so stupidly. Letters, missing symbols, and moving parts around. It never made sense to me and still doesn't.
Also I do it 100s of times a day in programming. Nearly every single line you write in code is ultimately c = a + b. But the way it's represented and explained in algebra is beyond useless.
You haven't gotten involved in simulations. Without algebra, you're useless when it comes to any of that.

The physical world runs off algebra and without people understanding it we wouldn't be able to create anything remotely advanced.
TopicHAMAS invades Israel
Yellow
11/04/23 5:54:18 AM
#144
I like how we're referring to the ottoman empire to justify current events
TopicI just got back from the fnaf movie and it was bad (spoiler free review)
Yellow
11/03/23 8:40:21 PM
#13
Also the fnaf IP is actually really creative take on horror and as always the horror genre lets everyone down
TopicI just got back from the fnaf movie and it was bad (spoiler free review)
Yellow
11/03/23 8:39:06 PM
#12
ParanoidObsessive posted...
The main review I heard was basically something along the lines of "This was a movie clearly made for kids, and it's fine as that. And most of the backlash is all the neckbeard adults pissed that it wasn't made for them."

I have no idea if that's true, though. I've never liked FNAF (or overacting YouTubers making videos reacting to it) and I didn't watch the movie. So it could be a brilliant masterpiece for all I know.
But... but... the children love the gore.

This coming from someone with zero interest in fnaf, clearly the only reason kids liked fnaf was because it was scary.

Also the fnaf fad is like 9 years old at this point? Those kids have grown up, something IPs always fail on accounting for
TopicIn wake of the war between Hamas and Israel antisemitism surges.
Yellow
11/03/23 2:29:15 PM
#4
People were so dumb that Asian hate crimes rose during covid.

Philippians were getting called Chinese and then blamed for that one guy who ate a bat and personally created covid (may he remain anonymous for his own sake).
TopicBrave Israeli government officials confront the UN
Yellow
11/02/23 5:03:30 PM
#15
Brave Isreal police officers confronting antisemitic Nazi rabbis protesting in the streets

Today, during a police raid to take down Palestinian flags in the anti-Zionist Jewish neighborhood, Mea Shearim in Jerusalem,
The Israeli policemen were recorded attacking the residents and knocking them down on the road, hitting and punching them in the face.

https://twitter.com/BETZEDEC/status/1719701912398729542
TopicBrave Israeli government officials confront the UN
Yellow
11/02/23 3:02:57 PM
#13
Yes, politicians are afraid of being called antisemitic. It's such a weak accusation that I see no reason to even respect it. This is going to go on and on for months, Palestinian people are just going to keep dying, and this isn't going to age well for them.

@Devil_May_Cry This is what is happening to civilians right now

I have friends who have family that live here, they're probably just going to die. Israel has killed 13 "Hamas militants" so far, by their own numbers. All this to kill 13 people? 8000 people have died so far, 600,000 people displaced, and all under bombardment.

https://twitter.com/tevfik_hams/status/1717175636983198080

Stop calling people antisemites. America took Ukraine's side because we were allies, and that was good, but now Israel is our ally and that takes precedence over any moral good.
TopicThis is my pet bird. This is my pet fish.
Yellow
11/02/23 2:45:02 PM
#10
Also the different species of mammals/reptiles changes how we interact with them, and birds/fish all pretty much do the same thing.

Bear? Which kind?
Cat? Big? Stay away. Small? Friend.
Raccoon? Harmless but stay away. A pet if you want destroyed furniture.
Dog? Friend.
Wolf? Can kill you but won't want to get near you.

Fish? They swim around. Some are tasty.
Birds? They fly and you can't touch them because they're too fast.
TopicThis is my pet bird. This is my pet fish.
Yellow
11/02/23 1:24:27 PM
#8
There are just too many damn birds and fish and no good reason to tell them apart tbh.
TopicBrave Israeli government officials confront the UN
Yellow
11/02/23 1:18:11 PM
#10
I have a Turkish friend and we were both watching the whole thing unfold like anyone else on the same exact page. Isreal's Twitter account just got massively ratioed on everything they posted, posting the most obvious propaganda aimed at westerners.

https://twitter.com/Israel/status/1717241394761269452

Israeli officials regularly call Palestinians subhuman animals, btw.

It wasn't until cable news came in with some terrible politics that people started equating being anti-isreal with being antisemitic. Real nazis are just quietly sitting in the corner giggling about all the human suffering going on. For some reason Biden decided to give our full unwavering support to Israel, so they have full permission to just fully seige Gaza.
TopicBrave Israeli government officials confront the UN
Yellow
11/02/23 11:50:48 AM
#5
Also, has anyone seen the interview where an idf general was confronted about killing 62% women and children, and his response was basically "I'm disappointed in you, these people are animals"
TopicBrave Israeli government officials confront the UN
Yellow
11/02/23 11:48:15 AM
#3
Very brave of them to use every Jewish person globally to justify their war crimes.

If you mention their 99.9% civilization death rate you basically want to throw them in the gas chambers.

No, actually, it's extremely antisemitic.
TopicAttractiveness and age test is stupid... They are terrible results.
Yellow
11/01/23 4:18:01 PM
#42
https://github.com/yu4u/age-gender-estimation
https://attractivenesstest.com/blog/How%20the%20app%20works

Nvm yeah it uses color data.

It extracts a PNG of your face and does processing on that, not a skeleton.
TopicThe Gamecube was a top tier console and I'm tired of people pretending it wasn't
Yellow
11/01/23 3:26:17 PM
#59
EvilResident posted...
Yup. I enjoyed all of them
Ok.

Enjoy having your opinion that's different than mine.
TopicThe Gamecube was a top tier console and I'm tired of people pretending it wasn't
Yellow
11/01/23 3:09:38 PM
#57
EvilResident posted...
Did I really need to say it? The 5 SH games, the 5 GTA games, Onimusha, etc etc and I dont even play RPGs
Yeah, all games that are infinitely less fun than a smash bros match with your friends.

You had those tank controls and pre-attack animations for maximum fun.
TopicThe Gamecube was a top tier console and I'm tired of people pretending it wasn't
Yellow
11/01/23 3:00:44 PM
#54
EvilResident posted...
so wrong
Are you PotD's resident Jak and Daxter fan?

I love it when people tell me I'm wrong and then say nothing else because they have no real argument, they just don't like the fact that I said it.
TopicAttractiveness and age test is stupid... They are terrible results.
Yellow
11/01/23 2:37:34 PM
#40
PK_Spam posted...
Tc if you want a higher little computer score, just 1) get a better haircut 2) lift a little 3) wear some nicer clothes and maybe take a better picture while standing and Im better lighting
I actually had many pictures of myself lying around and it kept giving the same score. It looks at your facial structure and feeds the edges of your eyes and nose and mouth into a ML model that was trained on some "beautiful" and "ugly" people. Doesn't even care about any other data.
TopicThe Gamecube was a top tier console and I'm tired of people pretending it wasn't
Yellow
11/01/23 2:33:28 PM
#51
I had a PS2 as a kid and I wanted nothing more than a Gamecube. PS2's games weren't nearly as fun. Just a bunch of ports and edgy games that played sluggishly. Gamecube had the most fun games that were on another level, with snappy controls and a smooth framerate every time.

I was shocked that when I grew up it was considered a failure. Didn't care if there were only 20 games worth playing, when you're a kid you only get bought 20 games anyway. If it was a PS2 it was most likely some shovelware. If it was a Gamecube, then it was Melee, or Mario Kart, or SMS.
TopicWhat is your primary source of protein?
Yellow
10/30/23 8:53:09 PM
#24
ZayKayWill posted...
Those 2 things are exactly the same in calorie amount. Put that in perspective.
Hey I eat that sushi basically every day.

Their smoked salmon is my favorite.
TopicPumpkin Spice is racist
Yellow
10/30/23 8:31:29 PM
#17
Race traitors.
TopicPumpkin Spice is racist
Yellow
10/30/23 4:49:12 PM
#13
Dikitain posted...
Maybe because their popularity could directly be associated to Columbus. In fact, it is about the ONLY thing that can be attributed directly to him.
Or maybe they're gross corrupted potatoes in disguise.
TopicPumpkin Spice is racist
Yellow
10/30/23 2:08:49 PM
#8
This article is hilarious and it makes me nostalgic. In 2013 it would have been covered by 200 YouTubers for billions of views.

Digging deeper it seems like black people have become enemies with pumpkins, while white people have hated sweet potatoes.
https://edgeeffects.net/pumpkin/

Sweet potatoes do make me irrationally upset tbf.
TopicAttractiveness and age test is stupid... They are terrible results.
Yellow
10/30/23 12:37:53 PM
#18
The computer tells me I am 6.7/10 and 34 years old.

Thanks computer?
Topicitt rad songs
Yellow
10/29/23 7:32:47 PM
#180
https://www.youtube.com/watch?v=shOWFyCd-LA
TopicHAMAS invades Israel
Yellow
10/29/23 6:08:01 PM
#108
Lobomoon posted...
That's weird - the mods deleted my post but not all the instances of people quoting it. At least someone here "picked a side". OK, I'll bite - what's the "proper way" to respond to a thousand Israelis killed by "not Palestinians"?
No, I don't have to choose between supporting terrorist attacks against Isreal citizens, or a full ground invasion of a crumbling "country" (concentration camp).

The Isreal government has to concede land, money, reparations, and cease their genocide of the Palastine people immediately. They won't do this, so the US has to pressure them. The US won't do that unless people mobilize massively on the issue. Most likely the only people who will win is Isreal, who will seige Gaza first chance they get.

Free Palastinian people = no terrorist group weaponizing hopelessness. This is a situation caused directly by Isreal.

These are just things that should happen. The world sucks and things won't happen, many people will die.
TopicSo who here has a good understanding of DC motors...
Yellow
10/28/23 9:49:53 PM
#17
So my biggest hangup here is how small DC motors (apparently?) trade off torque for speed at smaller sizes.

I look at small motors with higher torque and they all have gearboxes. Gearboxes have some drawbacks that I consider dealbreakers. (noisy, jerky, bigger)

I (naively) assume there is no such thing as a high torque DC motor smaller than a centimeter without a gearbox, and I assume this is just a limitation of physics. That, or there's no market for such motors.

I also maintain that I do not need the convenience of the internal controller board of a stepper/servo motor, and am capable of making my own. I don't really care about what's easy, I have no time limit to learn or build.

I say all this looking at my tiny 30 mm micromotor that can spin a fan fast enough to fly, but will stop moving if I touch the blade. I'm a software engineer, not an engineer.
Topicthis guy just nutted
Yellow
10/28/23 9:26:09 PM
#2
Congratulations to that handsome guy for his placebo effect.

Here's to hoping his neck recovers from the completely unneeded stress that non-doctors have charged him for.
TopicWhat are you reading?
Yellow
10/28/23 9:07:37 PM
#7
The Hobbit. I've never read it before, or watched the movies.
TopicNobody ever mentions how Link 100% glanced at Telma's chest in Twilight Princess
Yellow
10/28/23 8:57:52 PM
#3
Someone I once liked has posted in this topic but their post is invisible because I am blocked lol

Anyway, I also love TP and Telma's chest.
Topicattn: ICOYAR
Yellow
10/28/23 8:47:23 PM
#10
He left after the enshittification.
TopicSo who here has a good understanding of DC motors...
Yellow
10/27/23 9:21:20 PM
#12
shadowsword87 posted...
Also remember that without an absolute positioning on the motor, you're going to need to be dead reckoning the exact position. With slippage especially you're going to just drift what your micro thinks the position is, and what's physically there. Little errors that build up over time until your saftey measures take over.
That's the reason why people use steppe motors, going with what people have already used lets you grow from them. You'll basically have to reinvent the wheel.
Oh no... I don't like hearing that.

I'll think it over a bit before responding. But while I am, what if I just took a servo motor, removed to gearbox, kept the measuring mechanism, and just created a custom driver?

I've heard someone jumping from one field to another while disrespecting the field they're jumping to is a common thing.
TopicSo who here has a good understanding of DC motors...
Yellow
10/27/23 9:07:20 PM
#10
shadowsword87 posted...
Oh, ok so this is just theoretical then. You don't have a breadboard setup or a raspberry pi or ESP32 or something physical.
No, I imagine my final setup will be 3 custom ordered PCBs with many custom motor controllers (I got the CM4 specifically for this). I got into CAD to throw together a joint, but realized I have to do a lot of info gathering before I can even start.

shadowsword87 posted...
Oh, the reason why robotics tends to use stepper motors instead of DC motors is they don't have any internal feedback, so you're way more likely to burn out your motor when, say, the motor is caught. It's fine if you're in a completely controlled system, but if you're dealing with real machines out in real life you're going to cause issues.

You could always create a feedback loop, but you should look up control loop programs and the math associated with it if you're serious about it.
I would prefer to come up with a solution that intentionally isn't 100% efficient so that it matches the organic movement of an animal. I think steppers and servos are rigid and noisy, on top of being done to death, and it wouldn't be very interesting to me. I generally find most robotics projects kind of unimpressive for those reasons.

When designing my PCBs, I will make sure I take into account burning out my motors, as well as reading feedback, so that I can gauge how much pressure is being put on my motors and feed that back to my CPU. That's much appreciated.
TopicSo who here has a good understanding of DC motors...
Yellow
10/27/23 8:33:30 PM
#8
shadowsword87 posted...
Sup, EE here.
I'm a bit lost with what your problem is and what your proposed solution would be. What exact motor are you using and what's your exact Voltage and Amperage? In the datasheet you normally have a chart you can refer to for the RPM and torque.
Hey, this is me just using PotD as my rubber duck. I have come up with some solution, but it's from the perspective of a software engineer. Not your perfect engineer math. Mine is just to use evolutionary algos. Very complex and arduous.

My goal is that I want to replicate a rat. I don't have the physics background to match, say, the joint of a leg of a rat, to a motor that can match the torque and speed 1:1.

If I could come across some way to do the math, that would make this process faster. But that means I need someone to have actually documented how powerful a rat's leg is, so I guess this crosses over into biology.
TopicSo who here has a good understanding of DC motors...
Yellow
10/27/23 8:21:09 PM
#5
Currently working on building out a quadroped ragdoll in Godot... I did this in Unity previously, but the truth is guys, Godot was better than Unity just enough for devs to make the jump. The truth is that Unity would not have died if users weren't sick of their shit up until this point anyway.

Unity's C# support is still veeery bad and it limited what I could do with the language, just because the engine was poorly designed. I couldn't get machine learning, I couldn't get QUIC sockets. Also, yes, engineers actually use game engines to help design robots.

I'm going to use an evolutionary algorithm in tandem with machine learning where appropriate to approximate the necessary requirements for each motor. This will also serve to create a ML model to walk around. In the future I will use this framework to help design the circuitry, using the same algorithms, which will require many motor drivers.
TopicHAMAS invades Israel
Yellow
10/26/23 9:55:42 PM
#90
adjl posted...
Where in there are you seeing "terrorism is okay" and not just "blowing up civilians is bad"?

Do you or do you not accept the premise that Palestine does not consists entirely of terrorists?
While true, even if Palestine was nothing but Hamas terrorists, it doesn't change the fact that their existence is something Israel could prevent if they ceased their apartheid.

Just in case someone pops up and says "look, 90% of Palestinians support Hamas", you know.
TopicHAMAS invades Israel
Yellow
10/26/23 9:50:48 PM
#88
BlackScythe0 posted...
I don't see how anyone can still be in favor of a two state solution. So no I really don't see how it makes sense to expect Biden to assist terrorists.
99% civilian death rate, don't forget that detail. Don't assume that Isreal is in the right here. This is a problem they can't be trusted to fix on their own. It's something they caused.
TopicHAMAS invades Israel
Yellow
10/26/23 9:40:19 PM
#85
So yeah, it's a very complex situation and we can't just take sides as if it's a football team. We have to understand what's going on and what we can do to fix it.

Right now Biden should be using his power (as the world's leading superpower) to demand an immediate ceasefire. He should then demand that Israel make accommodations to Palestinians, regarding them as equal citizens. The idea is that Hamas loses power as Palestinians have hope for something else, something currently they don't have.

Instead Biden is providing aid to help against the Palestinian terrorists with a 99% civilian death rate, something which I hope you can see doesn't really make sense.
TopicHAMAS invades Israel
Yellow
10/26/23 9:20:55 PM
#84
Lobomoon posted...
That's my point exactly. You are trying to justify terrorism.
I'm really not. The Hamas terrorist attack was bad for everyone. This isn't me taking a side. It was a radical Islamo-fascist attack where everyone involved was selfishly in it for their 42 virgins. They couldn't care less about the well-being of their fellow Palestinians. Maybe they do, but they are not smart enough or educated enough to understand it. They die on average at the age of 35 as stateless citizens. Regardless, there is a reason these terrorist groups pop up that we can see if we're above the fray.

I am only interested in reducing human suffering. There's a proper way out of this, Isreal is not interested in it, because they are run by theocratic far-right zionists. They're not just the good guys here. We need to look at the overall picture here. They have power to improve the situation and they don't care. They prefer elimination.
TopicSo who here has a good understanding of DC motors...
Yellow
10/26/23 8:18:38 PM
#4
Lokarin posted...
I think you might be off base... many animals have rather robotic-jerky motions in the first place, particularly birds.

I kinda wanted to make a gearbox bird, but I have no industrial know-how
Hence lowering the voltage per motor via custom motor drivers, reducing torque and jerky movement.

The issue is that "4 limb" animals have around 600 muscles, and that doesn't matter what animal it is. Say we cut that number in half since a single motor can be used in reverse. This means that a proper replication will have 300 motors. Say I magically come up with driver circuitry that can handle that many motors without going overweight, I currently have no mechanism to tie that to requirements for the RPM/torque needed per joint, no knowledge of what kind of motors I even need.

So maybe I need to focus strictly on intel. Perhaps I should build this out in a 3D engine first, and utilize ML to optimize the requirements of each motor. I ask it to learn to walk around with a perfectly accurate skeleton and refine the minimum requirements.

Alternatively, I learn the anatomy of the rodent so well that I can calculate the requirements of each joint solely based on muscle weight and cell type ratio. I still need that data in dataset form.
TopicSo who here has a good understanding of DC motors...
Yellow
10/26/23 7:54:06 PM
#2
I should probably take this to r/robotics.
TopicSo who here has a good understanding of DC motors...
Yellow
10/26/23 7:51:46 PM
#1
This is the hardest challenge I could come up with for myself.

I have a pipe dream of creating an animatronic rodent that looks and moves like a real animal to the point of being completely indistinguishable. I've gone through many different kinds of mechanisms, such as hydraulics and electroactive polymers, and have come to the understanding that DC motors are king.

I am very experienced with electronics/programming and will design the circuitry and motor drivers however they need to be, down to the machine learning model. I have found a quirk in DC motors that may allow me to unconventionally lower the torque of the motor on purpose through custom drivers to allow for more natural movement.

This is my issue, I need the most efficient motor to insert into the joint, of, say, the leg of a rat, and match it 1:1. I need it to be as small as possible. I have limited experience with engineering, and have found the smallest motors have very high RPM but low torque. Why is this? I need the RPM to match my target, but it seems they make these motors for drones with as high RPM as possible. Gearboxes are inefficient, noisy, and consume space. Is it the only way?
TopicMacs are shit and people need to stop trying to use this in office settings.
Yellow
10/26/23 7:19:36 PM
#25
Macs are for people with clean desks, blank white walls, horn-rimmed glasses, and too much money.

Let us laugh at Macs together.
TopicI knew that the Democrats voting out McCarthy would bite them in the ass.
Yellow
10/26/23 3:32:42 PM
#28
I'll go out and say while I thought the sabatoge was hilarious, I'm not happy with the result, which makes me question the strategy of the whole thing.
Topicsometimes i think malware just makes itself
Yellow
10/26/23 2:43:58 PM
#9
Judgmenl posted...
Correct but I can sell you the product I've been working on for the past few years that fixes this.
Really now
Topicsometimes i think malware just makes itself
Yellow
10/26/23 2:42:48 PM
#8
I think .exe's should be discontinued, and only app packages should be supported. exe's should only be allowed to run in a forced sandbox mode for compatibility. They should do what Android does, explicitly grant permissions one at a time, and revoke them over time if they're not used.

Windows should do this, but maybe they think they could die off at any second and wouldn't survive the blowback. I would fully be ready to be anti-exe crusader against the masses.
Topicsometimes i think malware just makes itself
Yellow
10/26/23 2:34:17 PM
#6
Judgmenl posted...
Why not? Most payloads are just repurposed versions of existing payloads.

Also new CVEs come out daily. There is a lot of insecure software.
Windows and Linux are insecure OS's because they don't sandbox programs, so one bad actor program can do anything it wants.

C/C++ are insecure languages because one mistake means anything can just take over your program along with all the permissions.

Android is less secure because it's infused with Google spyware, as is Windows.

So I guess nothing is secure.
TopicHAMAS invades Israel
Yellow
10/26/23 2:06:47 PM
#78
Lobomoon posted...
It's shocking how many posters in here are on the side of people who literally holding hostages as we speak.
@Lobomoon

This is like the Jews in Nazi Germany committing a terrorist attack against German citizens, and then going "well they started it" when the Germans start quadrupling the gas chambers.

It's not that Hamas isn't bad, it's that Hamas is Isreal's fault, and if they really wanted to defeat Hamas, they would stop oppressing the Palastinians because what they actually want to to eradicate the "inferior and savage" Muslims.

They've killed over 4000 Palastinians now, displaced 600,000, and taken out 13 Hamas terrorists. That's not counting all the civilians they've killed by displacing them, Palestinians have an average life span of 35. That's a 99% civilian death rate.
TopicWhat drives you to keep posting here?
Yellow
10/26/23 12:39:48 AM
#8
It's on my new tab menu and it doesn't go away.
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