I just plugged in usb in a first try! :)))

Bought a Raspberry pi with intentions of making a kickass hacking module. Ended up blinking the LED lights from GPIO pins. How's your life?

I had a scrolling addiction on Facebook, then I installed devRant... I can say that I no longer have a scrolling addiction on Facebook... *No time for Facebook, must read all rants!*

When your classmates are such lobotomites, that they manage to fry 11 fucking IC's within a day! And I am the one who has to find and replace all the broken stuff. FFS it says 9V right there on the board NOT 12V! No, your board should not draw 1.7AMPS! This chip is getting kinda hot. What is wrong? ONE OF YOUR FUCKING PROBES IS BRIDGING ONE OF THE PINS!
Why isnt this working correctly? You adjusted the wrong fucking potentiometer!
I know I have far more experience than most of my classmates, but man, atleast try to not break things by just thinking: "I dont know dis. (Its actually written in the docs!) So imma assume it will be fine if I do dis. It wasnt fine!"
Also IF something doesnt work, DO NOT TURN UP THE VOLTAGE ON THE CIRCUIT BECAUSE IT APPEARS TO BE THE CLOSEST POSSIBLE ERROR. Which in most cases it is not!

POSTMORTEM

"4096 bit ~ 96 hours is what he said.

IDK why, but when he took the challenge, he posted that it'd take 36 hours"

As @cbsa wrote, and nitwhiz wrote "but the statement was that op's i3 did it in 11 hours. So there must be a result already, which can be verified?"

I added time because I was in the middle of a port involving ArbFloat so I could get arbitrary precision. I had a crude desmos graph doing projections on what I'd already factored in order to get an idea of how long it'd take to do larger
bit lengths

@p100sch speculated on the walked back time, and overstating the rig capabilities. Instead I spent a lot of time trying to get it 'just-so'.
Worse, because I had to resort to "Decimal" in python (and am currently experimenting with the same in Julia), both of which are immutable types, the GC was taking > 25% of the cpu time.

Performancewise, the numbers I cited in the actual thread, as of this time:
largest product factored was 32bit, 1855526741 * 2163967087, took 1116.111s in python.
Julia build used a slightly different method, & managed to factor a 27 bit number, 103147223 * 88789957 in 20.9s,
but this wasn't typical.

What surprised me was the variability. One bit length could take 100s or a couple thousand seconds even, and a product that was 1-2 bits longer could return a result in under a minute, sometimes in seconds.

This started cropping up, ironically, right after I posted the thread, whats a man to do?

So I started trying a bunch of things, some of which worked. Shameless as I am, I accepted the challenge. Things weren't perfect but it was going well enough. At that point I hadn't slept in 30~ hours so when I thought I had it I let it run and went to bed. 5 AM comes, I check the program. Still calculating, and way overshot. Fuuuuuuccc...
So here we are now and it's say to safe the worlds not gonna burn if I explain it seeing as it doesn't work, or at least only some of the time.

Others people, much smarter than me, mentioned it may be a means of finding more secure pairs, and maybe so, I'm not familiar enough to know.

For everyone that followed, commented, those who contributed, even the doubters who kept a sanity check on this without whom this would have been an even bigger embarassement, and the people with their pins and tactical dots, thanks.

So here it is.
A few assumptions first.
Assuming p = the product,
a = some prime,
b = another prime,
and r = a/b (where a is smaller than b)
w = 1/sqrt(p)
(also experimented with w = 1/sqrt(p)*2 but I kept overshooting my a very small margin)

x = a/p
y = b/p

1. for every two numbers, there is a ratio (r) that you can search for among the decimals, starting at 1.0, counting down. You can use this to find the original factors e.x. p*r=n, p/n=m (assuming the product has only two factors), instead of having to do a sieve.

2. You don't need the first number you find to be the precise value of a factor (we're doing floating point math), a large subset of decimal values for the value of a or b will naturally 'fall' into the value of a (or b) + some fractional number, which is lost. Some of you will object, "But if thats wrong, your result will be wrong!" but hear me out.

3. You round for the first factor 'found', and from there, you take the result and do p/a to get b. If 'a' is actually a factor of p, then mod(b, 1) == 0, and then naturally, a*b SHOULD equal p.
If not, you throw out both numbers, rinse and repeat.

Now I knew this this could be faster. Realized the finer the representation, the less important the fractional digits further right in the number were, it was just a matter of how much precision I could AFFORD to lose and still get an accurate result for r*p=a.

Fast forward, lot of experimentation, was hitting a lot of worst case time complexities, where the most significant digits had a bunch of zeroes in front of them so starting at 1.0 was a no go in many situations. Started looking and realized
I didn't NEED the ratio of a/b, I just needed the ratio of a to p.

Intuitively it made sense, but starting at 1.0 was blowing up the calculation time, and this made it so much worse.

I realized if I could start at r=1/sqrt(p) instead, and that because of certain properties, the fractional result of this, r, would ALWAYS be 1. close to one of the factors fractional value of n/p, and 2. it looked like it was guaranteed that r=1/sqrt(p) would ALWAYS be less than at least one of the primes, putting a bound on worst case.

The final result in executable pseudo code (python lol) looks something like the above variables plus

while w >= 0.0:
if (p / round(w*p)) % 1 == 0:
x = round(w*p)
y = p / round(w*p)
if x*y == p:
print("factors found!")
print(x)
print(y)
break
w = w + i

Still working but if anyone sees obvious problems I'd LOVE to hear about it.

CPI, coffee programming interface. Pretty much my boss wired a Pi0 to his coffee pot somehow and uses the GPIO pins to detect when the pot is done brewing and stops heating the top, then it sends a message to him on Slack.

Today, I dropped my 5900x while cleaning the computer. It's dead. pins got bent and one pin got loose.

I feel like crying... please send prayers and thoughts.

R.I.P AMD Ryzen 9 5900X 5900x 12 Cores 24 Threads 70 MB Cache 3.7 GHz up to 4.8 GHz. You will be missed.

A friend got a "new" (several years old) pc from an other friend. The pc made strange noises, so I open it and found a little speaker connected to the USB pins on the mainboard. Not an USB speaker but a simple mini speaker with two cables (see the picture). Why would someone do this?

OUCH!!!!

Fuck you, you motherfucking fuck. How DARE you have the capacity to sell fake fucking chips on Amazon and make me fucking waste hours of my god damn fucking nights trying to program your shitty, lazy-ass implementation of an EEPROM.

I followed the datasheet specs down to the fucking microsecond just to find that nothing would write to the chip, and then spent hours of my goddamn life trying to figure out what I was doing wrong, making myself feel like a fucking failure for not being able to write 1s and 0s to a few pins. Fuck you, fuck you with a giant horse cock with needles on the tip

South Africa Electricity:

This is after I lost my 7th 3000VA online UPS...

In South Africa we have 240V power most of the time which is great, but then there is scheduled power outages (because our electricity companies cannot "handle the load").

When we have a power outage we have automatic generators which brings everything back up although there is still the 1 minute drop which has weird spikes and odd voltages before switching to the generator (as the generators wait until they are stable)

This has being destroying our equipment, we had a $2000 repair bill 3 TIMES for 3 SEPERATE Xerox Machines that have surge protectors although their circuit board somehow fried.

We have lost 7 3000VA UPSes (3 different brands) and 5 voltage regulators we put to protect the UPSes.

The one UPS that fried just had 2 dead fuses, I decided to replace them (unplugged the batteries to avoid 240V) and when plugging the batteries back in there was a huge spark and flame and the metal and plastic melted onto the board and turned black (the metal pins to connect the battery are non existant now)

I am done with electricity...

P.S. 2 of our generators also got hit by lightning as we are high on a hill and ALL the plastic cable coverings inside the generator were melted

New position at work. Lots of power in regards to tech stacks of my choice.

I feel like Neo.

First project was finished in a week using Clojure. A basic application that would automate the process of adding our students into a particular active directory system in which many other things happen at the same time including updates to pins and other shit as well as networking and wifi permissions. Works fast as fuuuuuuuuuck, the alternative existed(somewhat) in php and while there was nothing wrong other than speed I wanted to show the head of my department what i could do.

It was anticlimactic as fuck. I thought it was gonna take me longer. It fucking didn't and i am glad as shit. It is now working like an absolute powerhouse in its own environment and being monitored by the sys admins, they loved how easy it was to deploy and how well behaved it is.

The head of the department is impressed as fuck and the board of directors got a hold of it. Reason being that I am being displayed as some sort of wizard that used ancient alien tech in the 21st century.

Fuck yes, major win.

I also get to add Clojure to my resumee. Hod even said that if needed be they will rethink my salary to add the fact that i get to use this tech where no one else can.

Amdy's story.

Amdy didn't have it easy. He's just a little APU and was already outdated when he was manufactured. But it got even worse! He didn't do anything wrong, but upon assembly, they lasered a different part number on him.

He didn't think much about it, but then they denied him all the goodies his brothers got: a nice printed box, a cooler, a leaflet, and a sticker.

Amdy didn't get any of that and wasn't welcome in the boxed camp. Instead, they stuffed him into a shoddy tray cardboard box with just some ESD foam for the pins.

Amdy was disappointed. That was just not fair! He was capable like his brothers. To add insult to injury, not even the manufacturer wanted to give warranty on the poor ugly duckling. They didn't listen to his complaints and shipped him to an unknown fate.

Then our roads crossed because Amdy was 10 EUR cheaper than the boxed ones at that point. Little Amdy breathed heavily when he finally got out of the mini box and seemed a bit disoriented. Poor little sod, what did they do to you?

Then he spotted the cooler. He had never seen anything like this before, so much better than the coolers his boxed brothers had received! And even top of the line thermal paste!

Amdy decided to be as good and fast a processor as a small Zen+ APU could possibly be. What was that software stuff? Didn't look like Windows. Ooohhh - Amdy rejoiced when he figured out that he was supposed to run Linux!

And that's how a despaired and unhappy APU finally found a life full of goodness.

I startet at this company where they made a map where some locations where displayed on a map. It took like 30 seconds to load the locations - and it could only display ten at once. To cover this fact they made it impossable to zoom out...
I circumenvented their incredably bad orm and queried the DB directly, created some indices, and only shipped coordinates, type and label (whereas they shipped the whole datasets to the browser before) - and suddenly i could show all 30k
pins at once in microseconds having less traffic then before. That was quite a leap.

Needless to say the app never reached nearly production, I left the shit show soon after and the ceo is dead by now.

When you don't know what's happening in your js so you put console.log at every third line and in every function...

Fuck you Amazon.
Fuck your two factor authentication.
Fuck your PINs over SMS that take 1 hour to arrive.
Fuck you.

Using circuit simulator (can find it on itch.io) and recently built an 8bit adder as you can see below.

Pins on left are IN and pins on right are OUT.

Just wanted to run it by some of you because 1. circuit simulator is fucking cool, 2. I'm not sure if I got the basics correct.

I attached an imagine of the 8bit adder along with the subcircuits if that interests you.

FFUUUuucccckkk me sideways. So I decided to look into USB type-c's power delivery and alt modes. Cause I kinda want to make an adapter card to run my displays over a single cable. TLDR of the rest: USB-C has some huge capabilities which noone is interested in using since its way to complex to handle for what its worth in the end.
Now PD alone is kinda ok to deal with since a lot of powerbanks use it and some hobby guys documented how to work with it. I find it really odd thou that you NEED to use a dedicated IC for using the configuration chanel to negotiate how much power you can draw. Why the USB standard didnt use some simple 5V low speed signalling? Also the standard says that you only have to implement 5v 0.6A with every other power level being optional. (This is also true for cables. Most manufacturers use only the USB 2.0 standard for them and brag about how fast type-C is. ლ(ಠ益ಠლ) )
Now to the alt modes. These motherfuckers are a real shitshow to deal with. First you need a Mux to deal with USB-C's two way insertion, so your signals wont get flipped. Next thing is that you have four lanes at your disposal in alt mode. Which you can either use for four Display Port Lanes or two DP lanes and two USB 3.0 lanes. (You always get USB 2.0) Now you may think that there would be one simple chip to do it all? Nope you need atleast two at the price of 6$ each. One for PD and one for Alt modes. Both are very hard to solder (QFN, 0.5 mm pitch 40+ pins) TI ended up being the only one with a decent offering of IC's that do what I need. As for working with them, you would think that you just slap a simple MCU on there that communicates over I2C or SPI to configure the chips? Nope! You program the chips memory from which it configures itsself. And the programming is done with some TI tool which gives me no idea as to how you can handle everything whith no control logic behind it.
Looking into alternative IC's leaves me with cypress semi. And their documentation is basically a total mess. I wanna know what that chip is good for and what I need to do to make it work. I dont care about technical details mixed with marketing jargon nobody understands. And I really despise that I have to register just to download a datasheet. Especially since there is no info about it on the main page.
And this whole rant hasnt even touched the topic that USB-C only uses DP and nothing else. So you better hope that you have DP++ so you can use a passive conversion.
This was my Ted Talk about USB-C. Some info in it may be subject to my stupidity and errors as it currently is 02:15 in the morning and I need some sleep.

In my unenlightened youth, when programming was a module in my college diploma that didn't seem to be taking me where I wanted to go, I had a couple of guys guy in my class that could arguably be the weird ones.

Jonny, although he asserted that he was to be called "Jonhty", whatever, we never did. He was pretty much top of the high school food chain and for some reason elected to study computer science, none of us was prepared to put up with his shit. He was always boasting about some fanciful claim or another, famously entering the classroom and exclaiming he'd "fucked an absolute milf" and seemed somewhat evasive about the answer, turns out he was 17 and she was 35, the age difference was greater than his own age. We burst out laughing. He would also turn up late and state the college bus was late (it wasn't I got the free bus every day, he'd just not got out his wanking chariot early enough).

One valentine's day we got him a card from a mysterious stranger which was accompanied by a package containing a cucumber and Vaseline, the inside of the card read "to assist you in the following request: please go fuck yourself".

Before you think we were being unduly harsh, we had a centre table where we'd be taught from with computers around the outer rim of the room. He'd come up behind people while at the centre desk, quietly press ctrl+P and slowly walk back to the printer. I saw him do it to my machine and I got to the printer first, to which he shouted "that's MY work" which was amusing because unbeknownst to him I had put headers on all my documents so he really didn't have an answer for why my name was at the top of every page.

To top it all off he had dead eyes, there didn't appear to be much going on but the rent, there was no spark of intelligent life, and while I thought it, I never said it out loud, but other students did and I had to agree. He was just copying his way to graduation. However, he ultimately didn't graduate when people refused to allow him to copy.

Another guy, Richard I believe his name was, which is just as well because he was a right dick. In the UK our word for white trash is "chav" (that's a very naïve explanation for it but that's another rant best left for "socialsciencerant") and he was an complete idiot who was gifted with more brain cells than he ever needed to use. He actually studied hard and got reasonable grades, probably on par with me, but he boasted about smoking weed all the time, he was forever playing dark side of the moon via his loud mp3 player. I kinda left him alone generally until he was high in class one time and while we we're watching a documentary he'd shake my chair and make a weird noise in my ear every few minutes, the first couple of times startled me, the remaining multi-dozen times pissed me off.

It all came to a head with this guy when I'd been hearing about his uninteresting bs on drugs, music and how best to spend my time ("you need to lighten up man, come round my house, take a joint and relax man", that sorta thing), well this guy walked like he was mid way through shitting himself so I personally think that perhaps he is too chilled. Anyway he's arguing with me and after the exchange of him making his point, me disagreeing and expecting the end of it, he made the mistake of saying two words to me:

"Listen, mate..."

And I had him in check mate.

"Listen, I ain't your fucking mate , I don't even like you, you're a disruptive annoying twat that thinks he knows it all, we're all 17, none of us know anything, so shut the fuck up, sit the fuck down and stop boring me with your drugs, I ain't interested, and for the record I think pink Floyd ruined prog rock!"

He looked at me with sad puppy dog eyes, and started with the "but, why?", However I was interrupted and had to leave the class for unrelated reasons, I returned to be told he'd put safety pins up right on my chair so I'd sit on them, and mutual friends who TD me I'd been cruel and that he doesn't was hurt, so I should apologize, he overheard and said he was sorry for bring a bit of a dick.

However, you just know when you don't get on with someone? Yeah, that. So I said I wasn't sorry for what I said, for while it was harsh, I am not his mate, nor did I want to be his mate and that was all I had to say on the subject, and that if he wants to take offensive to a nobody not liking him then he's in for a very rough time in life.

Unsurprisingly I don't keep in touch with anyone from college!

Article 13 has been FUCKING PASSED. SHIT SHIT FUCKEDDY FUCK ING FUCK-CHRIST ON A FUCKING FUCK BYCICLE MADE OF FUCKING ARSNIC COVERED LEGO BRICKS WITH PINS INSTEAD OF BUMPS BEING RIDDEN BY THE DECREPIT CORPSES THE EU CALLS A FUCKING GOVERNMENT!!

FUCK FUCK FUCKING FUCK SHIT AAAAAAAAAARGGGGG!

First chance I get I'm asking for a transfer to America.

*Writes Slack message*
*Sends*
*Notices mistake*
*Goes to edit*
*Accidentally pins message*
*Goes to edit*
*Accidentally deletes*

*Gives up on life*

Because of some theft this year and even though we already have security cameras, my apartment building decided to check the front door locks so it's more secure.

This key looks very high tech... Only issue though is I never use the key anyway... I just entered the door code...

So what is the point of changing the locks? I'm going to guess whoever is stealing isn't picking the lock... People would notice... They must know the code.

Also it seems most of the apartment locks are digital key card/pins too. Wondering if this just means most owners are young or just are techies/devs...

Between high school and college, working in a circuit board manufacturing storeroom.

Fun fact: when we are bagging small boards, we do not gently lay them in containers, they're usually thrown at least 6 feet into a bin of the same type of board after they're placed in the bag. We also don't remake a board when pins are bent, we just bend them back with tweezers. And you know that rule about not touching the gold connectors... Yeah... So much for that... Did I remember to mention that these boards are for medical equipment?

On the bright side, we at least have electrostatic discharge control going on all the time.

!Dev

the fuck...

I'm not very good in remembering numbers. But I have lots to remember: apartment entrance code, maestrocard pin, phone pin, s few pins at work, and so on. So I remember patterns my finger mskes on a numpad instead [if you have played Ingress, you know exactly how it works].

There is a pattern for a bank card. Another one for phone pin, etc.

I've been using this technique for years... It has never failed me. I never could remember my pins, but give me a keypad and I'll enter it right away.

Last week smth happened. I forgot 2 pins from both of my bank cards... Both at the same day. And I did not have them written down anywhere for years...

Shit

hahahaha

Playing with the GPIO pins on my raspberry pi, it's the small things that make us happy!

This MOTHERFUCKER was hiding from me for three FUCKING DAYS now! All the damn time I had corrupt display memory cause of it!

Context: CS and DC were accidentally swapped on the PCB! Not a hardware issue thou. The pins can be remapped in software.

Definitely not a morning person.

So I'm taking embedded systems subject in my masters course. They have mixed this subject's content with electrical engineering and I'm a computer science graduate. Everything was perfect until I reached to GPIO board.
Wtf is this shit?
Why it has so many holes and what are they for?
What I'm supposed to do with it?
What is ground? Transistor?
Why I'm connecting to two pins only instead of the 4 pins of a button?

Thanks to pi4j i think i will pass the subject!

I put together my first custom computer, was too cheap to buy a case for it, at the end I realized the "power button" is on the case itself!! Anyone else turn on a computer by manually using a metal object to connect the power pins :/

Frustration Rant!

Because old hardware means learning the hard way sometimes, I've had to purchase more goodies.

On my last update, I installed the rs232 shield which may have inadvertently been wired backwards for Tx/Rx from what im used to. I assume it is backwards to most db9 serial ports because most Arduino or other projects you would do with a pi have serial "in" connections like old routers and devices that would be "controlled" rather than the other way around. Anyway, according to a video on youtube showing a guy turning an old machine into an IRC client via raspberry pi, this shield may be swapped. That means that instead of interfacing with the old machine via a null modem crossover cable, I need a straight cable with male db9 on both ends. I unfortunately tried using the null modem crossover cable which was reversing the reversed pins all over again. I hope these next few days are more fruitful now that I've bought a straight cable and db9/25 adapter.

The good thing is that I managed to get the pi to recognize its new serial port. I also dusted off my DOS skills and my serial card in the 5150 seems to work.

I literally banged my head after nothing worked. Im hoping that the tx/ Rx is solved soon.

Oh and that AT to PS/2 adapter will allow me to use by IBM original Model M Keyboarf rather than the fun model F.

Hey guys
I think I just burned 2 Nanos.
I'm using a 30W soldering Iron and had to resolder the pins of one and solder the pins of a new one.
Now they don't work. One allows for code upload but won't turn on, other seams to have a short circuit.
Could have I burned the circuits due to a 30W soldering iron?
Also used a little of flux on the pins, can flux pass energy and make bridges?
Thanks

Me and my friend > trying to attach a touchscreen display module to raspberry pi.
The module has two rows of female pins like
: : : : : : : :

The pi (model: zero w) has two rows of male pins soldered to it.
One row is fine but another row is @ 90° angle to first one.

** Who the hell bent these pins **
** A glimpse at jumper wires **

Ya let's do it,

After connection,

So many wires, totally messy & ugly

But alas it works

:)

The worst type of debugging: Programming an MCU without a Serial Monitor.

Some Context: I've spendt today about 3h+ on getting an attiny 45 to read 3 digital values on 3 pins. So for every test I wanted to make, I needed to put the MCU inside a socket put this socket on a arduino and flash it. Then extract it from the socket and put it on a breadboard for testing.
After getting headaches for nothing making any goddamn sense, I ended up noticing that one input pin is a multiplexed reset pin with the reset having top priority and no way to change it. So whenever this pin should have read a low signal, it got held in reset! FML

You want to change the wifi network to which is your embedded device connected?
It's easy:
- The native process is broken
- ESP is in the correct state, but refuse to communicate with anything
- Restore to default doesn't work
- Flashing default firmware doesn't help
- download the whole NodeJS/NPM
- compile two perl binaries
- bump into 2 year old bug, that your Intel wifi won't connect to the ESP SoftAP
- reinstall the Intel driver, just to find out it's still not fixed
- connect the external Atheros wifi adapter
- connect that shit back to the cloud

And just after little under 4 days of fiddling with GPIO pins it finally works and communicates.

Fuck all authentication everywhere all the time. Fuck your passwords. Fuck your fingerprints. Fuck your rolling key fob. Fuck your aws secrets. Fuck your docker secrets. Fuck your oauth. Fuck your /etc/passwd. Fuck your groups. Fuck chmod and fuck chown and definitely fuck Kerberos. Fuck Saml. Fuck duo mobile. Fuck rotating pins. Fuck axiad. Fuck selinux. Fuck your fill out this form to get role based access. Fuck it doesn’t work because you can’t log in. Fuck it.

Hey guys.
This was my project for today.
Power supply, 5v USB 25A x2; 12V 10A x2; extra power standard cables to power HDDs and such.
Plus a sand paper whatever it's called :p

Ps: Need to know how to power it without the standart power supply, with cables direct to the brush motor pins. Anyone knows? Have arduinos, l293, easy shields, uln2003a... Would one of this work?

Hope you guys like my 🤪 ideas

So my MCU teacher said I should use a long ass ternary to determine which pins should be set high for a given number on a seven segment display. Cause the display was on a single 8-bit port on the mcu I decided to generate a bitmask with a switch statement and set the port directly.

I Have got a lot of swags going to events and meetups! Shirts Pins IDs Stickers ! what is your most Treasured swag of all time??
BONUS IMAGE down

guy creates very cool looking, advanced css effects library that went viral

guy puts it up on GitHub

guy writes a ranty post and pins it to top the of issues with stuff like "i'm not going to make this a module or library that can be installed, and also don't try because i've already created a seperate repo for that" ON AN OPEN SOURCE LIBRARY

dude, you already open-sourced it, people are going to use it however they want

idk, just found this to be a very weird vibe, thought i'd share. thoughts?

So while exploring some new ideas, I decided to figure out if I could use variables in the known set to determine the bounds of variables in the unknown set.

The variables in question are algebraic identities derived from the semiprimes, so you already know where this is going.

The existing known set is 1194 identities.
And there are, if I recall, roughly two dozen unknowns.

Many knowns have the unknowns as their factors. The d4 product set for example is composed of variables d4a, d4u, d4z, d4z9, d4z4, d4alpha, d4theta, d4omega, etc.
The component variables themselves are unknown, just their products are known. Anyway.

What I've found interesting is if you know the minimum of some of these subsets, for example d4z is smallest out of the d4's for some semiprimes, then you know the upperbound of both the component variables d4 and z.

Unless of course either of them is < 1.

So the order of these variables, based on value, changes depending on the properties of the semiprime, which I won't get into. Most of the time the order change is minor, but for some variables they can vary a lot between semiprimes, rapidly shifting their rank in the known set. This makes it hard to do anything with them.

And what I found myself asking, over and over again, was if there was a way to lock them down? Think of it like a giant switch board, where flipping one switch lights up N number of others, apparently at random. But flipping some other switch completely alters how that first switch works and what lights it seemingly interacts with. And you have a board of them thats 1194^2 in total. So what do you do?

I'd had a similar notion a while back, where I would measure relative value in the known set, among a bunch of variables, assign a letter if the conditions were present, and generate a string, called a "haplotype."
It was hap hazard and I wrote a lot of code to do filtering, sorting, and set manipulation to find sets of elements in common, unique elements, etc. But the 'type' strings, a jumble of random letters, were only useful say, forty percent of the time. For example if a semiprime had a particular type starting with a certain series of letters, 40% of the time a certain known variable was guaranteed to be above a certain variable from the unknown set...40%~ of the time.
It was a lost cause it seemed.

But I returned to the idea recently and revamped the entire notion.

Instead what I would approach it from a more complete angle.
I'd take two known variables J and K, one would be called the indicator, and the other would be the 'target'.
Two other variables would be the 'component' variables (an element taken from the unknown set), and the constraint variable (could be from either the known or unknown set).

The idea was that relationships between the KNOWN variables (an indicator and a target variable) could be used to indicate the rank relationship between the unknown component variable and the constraint variable.

You'd think this wouldn't work either, but my intuition was there were so many seemingly 'random' rank changes of variables in the known set for any two semiprimes, that 1. no two semiprimes ever shared the same order for every variable, and 2. the order of the known variables had to be leaking information about the relationships of the unknown variables.

It turns out my intuition was correct.

Imagine you are picking a lock, and by knowing the order and position of the first two pins, you are able to deduce the relative position of two pins further back that you can't reach because of the locks security features. It doesn't let you unlock the lock directly, but by knowing this, if you can get past the lock's security features, you have a chance of using information about the third pin to get a better, if incomplete, understanding about the boundary position of the last pin.

I would initiate a big scoring list, one for each known element or identity. And then I would check it in tandem like so:

if component > constraint and indicator > target:
indicator[j]+= 1

This is a simplication, but the idea was to score ALL such combination of relationship, whether the indicator was greater than the target at the same time a component was greater than a constraint, or the opposite.
This worked out to four if checks and four separate score lists.

And by subtracting one scorelist from another, I could check for variables that were a bad fit: they'd have equal probability of scoring for example, where they were greater than the target one time, and then lesser than it for another semiprime.

So for any given relationship, greater or lesser between any unknown variable and constraint variable, I could find any indicator variable and target variable whose relationship strongly correlated to the unknown's.

Debugging is fun sometimes.
Especially when said bug fills up RAM, sends a bunch of guff to VRAM, and pins a core at 100%, rendering my computer near unusable in mere seconds.

(I accidentally load the same texture maybe a hundred or so times)

Wow React js is pretty cool and easy.
Let's build a Raspberry Pi pins selector using radio buttons.
Well, nevermind.

>Client: Hey, I lost my Facebook password but it's saved on my old laptop
>Me: ...alright, i'll look
>Laptop: won't boot - "No bootable devices found!"
hoo boy
>opens 'er up to pull drive
this is really heavy for an SSD, Corsair, and especially for only 64GB
>plugs into other PC
nothing
fuck me
>sees jumper pins
>jumps them
>BAREFOOT-ROM RECOVERYMODE SSD DEVICE - 128GB
that's twice the size of the disk, wtf?
but ok, i'll take it, any data?
>Win10: *crashes because driver chokes*
>Win7: *crashes because driver chokes*
>WinXP: *doesn't see it, TestDisk doesn't run because Kernel32.DLL issue*
>Linux: *Issues the instant SSD plugged in, they stop instant removed*
fuck it
RMA

Intel 8085 micro-processor, anyone?

In my graduation, one of the semesters had Intel 8085 programming in the curriculum. It's because of that dev-kit I understood what assembly-level language means.

A simple scenario of adding two numbers would result in half a page long sequence of commands that literally didn't excuse any mistakes.

It made me understand the semantics or basically what we get taught as "middle level" languages.
We had to memorize the exact pins of the thing and had to draw it from memory. And we had to learn the instruction set it had.

Later we had to learn Intel 8086 but its instruction set was way too complicated and I gave up on it.

I know it sounds geeky but I randomly remembered it today.

This little piece of something was on few pins of the ram socket. That explains why I was getting all of those MEMORY_MANAGEMENT GSODs

I told you guys that I would update you on my PiBM-5150 project. I figured out the hard way that my USB to DB-25 cable wouldn't cut it. Seems it is for printers and no matter how hard I tried it wouldn't work because of the path of the wires. After researching, it is apparent that the GPIO pins on the pi are configured for serial by default but it requires a little voltage change from TTY to RS-232. Rather than do like one of the videos I saw and solder junk to a bread board, I found a serial (rs-232) shield and 9pin output for the pi. Now, both computers are true rs-232 each. Instead of using a modem between them, I bought a null modem cable (crossover of Tx Rx signals) to interface the two machines directly. I'll update this evening to show it hopefully working.

Algorithms to Live By: How to Put on a Quilt Cover

1. Sync the orientation of both quit and cover
2. Locate the corners on the cover and add clothes pins
3. Insert the corners 1 by one and attach the pin
4. Stuff everything else inside
5. Walk around and hold each pair of perpendicular corners and give it a toss (Full body morning exercises now complete)
6. When satisfied, removed the pins.
7. Place quilt onto bed

Now watch as the quilt gets twenties inside over the following few weeks and either just give up until the next wash or repeat.

Alot of hacks around here!
An extract of some of those:
-Couldn't time the shutter right when photographing lightning. Used my oscilloscope to measure its electrical influence and anytime a peak is detected, it actuates the shutter.
-Using a lock as a heatsink for a overheating display driver ic.
-Hacking two USB ports together to get more power.
-Display module was too tall with header pins. Moved its back components to the main board and soldered the module flat onto it by flowing solder down its connecting holes.
-Not me but still interesting: Back on ye olde times when paid tv contained a disruptive H or VSYNC signal only their paid tv box could filter, my electronics prof. analyzed it and built the required comb filter on his own. Even sold some on the black market.

I feel like writing or telling people about the time I jumped from Windows 7 Ultimate and jumping to Windows 10. (I'm not against 10, but I'm never updating after what had happened to me)
It all starts when none of my games will play due to a possible issue with my graphics card. I look up "3D source game bug" and not many results pop up. I go on Microsoft's Qna areas and ask this question but to my surprise nothing they say would make sense. "Clean the pins of your graphics card, make sure you verify the games on Steam". I verified the games and they checked out as perfectly fine. I don't have access to my graphics card because this is a laptop, sadly not a tower.
Two months pass and my computer is already showing signs of stress, like it didn't want to live in a sense. It was three times slower than when I was on Windows 7 and it was unallocating areas of my main hard drive where I could make virtual hard drives.
Instantly I start looking up Linux distros and find Linux Mint. 17.3 was the current version at the time. I downloaded it and burned it onto a DVD-rom and rebooted my computer. I loaded into the disc and to my surprise it seemed almost like Windows 7 apart from the Linux part. I grab my external hard drive and partition it to hold the Linux distro and leave it plugged in incase Windows 10 does actually fail.
On December 19, a few months after Windows 10 had released. I start my laptop to try and continue my studies in video game development. But to my surprise, Windows 10 had finally crashed permanently. The screen flickered blue and black, and an error box saying Loginui.exe failed to start. I look at it for a solid minute as my computer had just committed suicide in a sense.
I reboot thinking it would fix the error but it didn't. I couldn't log in anymore.
I force shutdown the laptop and turn it back on putting it into safe mode.
To my surprise loginui.exe works and I sign in. I look at my desktop, the space wallpaper I always admired, the sound files, screen shots I had saved.
I go into file explorer and grab everything out of my default hard drive Windows was installed on. Nothing but 400gb got left behind and that was mainly garbage prototypes I had made and Windows itself. I formatted my external hard drive and placed everything on it. Escaping Windows 10 with around 100GB of useful data I looked at the final shutdown button I would look at.
I click it and try to boot into normal Windows 10. But it doesn't work. It flickers and the error pops up once more.
I force it to shutdown and insert the previous Linux Mint disc I made and format the default hard drive through Linux. I was done. 10 gave me a lot of shit. Java wouldn't work, my games has a functional UI but no screen popped up except a black abyss and it wouldn't even let me try to update my graphics card, apparently my AMD Radeon 5450 was up to date at the AMD Radeon 5000's.
I installed Linux Mint and thinking the games would actually play I open steam and Launch Half-Life 2 to check if Linux would be nicer to me than Windows 10 had been.
To my surprise the game ran. The scene from Highway 17 popped on screen and the UI was fully functional. But it was playing at 10-15fps rather than the usual 60-70fps. Keep look at my drivers and see my graphics card isn't in use. I do some research and it turns out I have a Hybrid Laptop.
Intel HD Graphics and an AMD Radeon 5450 and it was using the Intel and not the AMD. Months of testing and attempts of getting the games to work at high frame rates pass and the Damn thing still functions at a low terrible fps. Finally I give up. I ask my mom for a Windows 7 disc and she says we can't afford it. A few months pass and I finally get a Windows 7 installation disc through money I've saved up. Proudly I put it into my optical disc drive and install it to my main hard drive deleting Linux completely. I announced to all my friends my computer was back in working order and I install everything I needed, Steam, Skype, Blender, and Unity as well as all my games. I test Half-Life 2 and it's running exceptionally smoothly, I test Minecraft at max settings and it's working beautifully. The computer was functioning properly once again and my life as a developer started as I modeled things and blender, learned beginners C# and learned a lot of Batch. Today the computer still runs at a great speed and I warn others of what happened to me after I installed Windows 10 to my machine if they are thinking of switching from 7 or 8 on an older machine.
Truly the damage to my data cannot be undone. But the memory of the maintenance, work, tests, all are a memory of how Windows 10 ruined me and every night before the one year anniversary of Windows 10's release, I took out the battery of my laptop and unplugged it from the a.c. power, just so Windows 10 doesn't show it's DLLs, batch scripts, vbs scripts, anything on my computer. But now, after this has happened and I have recovered, I now only have a story to tell

FUCK MY LIFE WHY CANT A RASPI BOOT FROM USB??! I'VE BEEN WORKING ON A PROJECT FOR IT FOR THE LAST WEEK, SPENT NIGHTS LEARNING ELECTRONIC BASICS AND GUESS WHAT? THAT FUCKING RASPIAN ON MY MICRO SD CARD IS NOT BOOTING. AND I CANT REINSTALL IT BECAUSE I HAVENT GOT AN FUCKING ADAPTER FOR THIS SHIT. I HAVENT BEEN USING A MICRO SD FOR YEARS.
AND NOW I CANT TEST MY PROGRAM BECAUSE I NEED THE RASPIS GPIO PINS :(

>stick holding important data goes bad ("Insert DVD" IT'S A FUCKING FLASH DRIVE)
>no backups as it's a flash drive so my PC never did an auto-backup despite being configured to do so
>might be recoverable
>"short pins 2 and 3 while running tool to reconfigure NAND and controller then recover data from quick format with TestDisk"
*looks at drive*

Well.
Fuck.

it's not even sharp enough to slit my wrists with

we bought a 4x4 keypad yesterday. so this happened:

me: *got a keypad for 3€* hey, dont u guys have a keypad with soldered pins?
guy from store: umm we have separate pins...
me: *smh* can u please check?
guy from store: *brings me 3 other keypads* here, have a look at these...

those keypads were worth 11-15€! but its basically the same! i still have to solder the damn thing to the keypad..

me: nvm, ill take the separate ones and the 3€ keypad.

Laptop's WiFi module wasn't working.
Opened it and blew on the pins.
Now it works.

My boss told me I have to update a ms access db that hasn't been touched since 2012... I know nothing about access or vb and I have no desire to learn that crap. But I leave for vacation on Friday so I just have to skate by until then.

5 fucking days of Google search after Google search. Error after fucking error. Deadline getting closer by the fucking minute. teammates interrupting me every 10 minutes over discord asking for help on their fucking part of the project

and it turns out the solution was just one damn line

One fucking line in a forEach to iterate over the model data sending the necessary aspects to the Javascript function to create map pins for the database locations

5 fucking horrible days all amounts to 1 line

Really shows how much I still have to learn. And the yelling at my screen reveals my need to take an anger management class

Got a phone call from a scammer claiming to be my Cell Phone Provider saying “Congratulations! You just recieved unlimited calls and messages for a year, now to win this please give the 4 digit pins given to you” then I recieved a 4 digit pin and warning label not to give this message to anyone else. I then noticed that this was a scammer, i got his probably fake number and I tried to mess with him by giving random codes, he then noticed that the numbers were fake in the 5 try.

I truly feel bad for this idiot and just call him a scammer and end the call...

Was in a university group project and had to make an angular momentum measurement device. An hour before demo voltage on one of the pins was still a bit too high. Friend drove to Chinatown not too far away from campus and bought a pack of the cheapest batteries. Plugged the cheap batteries in, the voltage was just spot on. How awesome was that!

IT'S ALIVE! IT'S ALIVE!

One of my first rants was about my PC dying. I just fixed it today! Bought a new power supply because I was suspecting that that was the issue. Turns out I was just a moron and forgot to plug in the 12v ATX pins!

Still a good PSU purchase for whatever next rig I build. Long live my PC!

Hi guys, I'm hoping you can help. I've looked everywhere and I've not got a clue what it is.

I lost my back door key (5-pin pin and tumbler lock) the other day, and I can't afford to get a new one right now.

I tried picking it earlier, and I discovered it's got a spring at the back of the plug (which I've never come across). I lined up all the pins but for some reason it's not opening, and I have a feeling it's either got an anti-pick pin or it's to do with that spring.

Has anyone with lock experience got a clue what could be doing this? I'm at a loss.

Why would you say that your website should support IE?? Whyyy?? Who uses that except for downloading Chrome? You just make our lives miserable with that :(

I've gotta create a bidirectional communication protocol to link 2-3 RPis over GPIO. I have between 4-5 pins for TX and 45 for RX, so each directional bus is that wide.
Even better, I have to assume 4 bit bus length unless told otherwise, since 4 to 6 pins on the GPIO are usually used for serial/UART, COM and/or 1-pin communications (for use to get a console, not to throw data down.)

The best part?

Needs to be a Python library.

i wanna die

Ideas I've had over the years that could pan out and be useful:

SMS-DB: Stands for SMS-Data Burst. Used to allow those with low cell signal or no data plan to transfer data between a phone and some client via the standard SMS text space. Would be slow, but would act kinda like dial-up over SMS (as mobile lines are compressed on all service levels, even LTE, so traditional dial-up wouldn't work!) I have a general idea on how packets would be laid out, but that's about it so far...

everything2PNG: Allows one to transpose any file's data into a PNG with a 3 byte per pixel (full color RGB), which allows for a "compression" of sorts (about 91, 93% on preliminary tests) AND allowing further, more efficient compression of the resulting file. (Plus... it's just kinda cool to see files transposed as PNGs.) I actually have a simple transposer to go to PNG, but can't yet go back. Large files (around 600MB) use upwards of 4GB with efficient paging and other optimizations via NumPy so far, so it's not *viable* yet, but it's coming along nicely.

RPi-GPIO Interconnection Bus: A master/slave or round robin method to allow for Raspberry Pis to communicate using GPIO, which can help free up network bandwidth in RPi cloud computing clusters. At most, this'd allow for 4 bits used for pushing to the GPIO "bus", and 4 bits used for pulling from the "bus". 8 pins total are usually unused minimum, so either 3 or 4 pins for upload, 3 or 4 for download, and potentially 1 or 2 for commands, general non-data communication, etc. I made a version of this concept using Round Robin for a client, but it was horribly slow. (I also don't have distribution rights for the code, so i'm working from scratch.) Definitely doable.

Ok, so I saw someone post in Dev rant that the incognito browsing history was stored in the system32 folder so I thought that's quite amusing, I'll tell my cousin to see if he falls for it. Next thing I know he actually deleted it! He then asked me how to fix that. Me being the twat I am told him that the fix was quite simple. All you need to polarise the hard drive to get those sectors to start working again ( literally talking out my a** here to make it sound a little more legit). To do this take the hard drive out and rub a magnet up towards the pins where the cable was connected. He now has a broken hard drive and I have to convince him that it was because he rubbed it the wrong way as I really CBA to have to buy him a new one and get his little laptop up and running again. I really didn't expect him to actually do it or listen to me. To top it all off he wants to study computer science at uni (he's just started collage).

Started a journey of serial exploitations and trying to read stuff with UART/debug pins. Holy fuck where are the UART pins!!

"Google Voice Kit - Install this image on your RPi 3B+ (or Zero depending on the kit version), pop this Hat on the GPIO pins, and press the button! It's that easy!!!"

how did this happen google

I was doing stuff in my room, when I slipped on my hand and landed on my knees. I look up, and I see my Raspberry Pi's GPIO pins puncturing my hand.
Fast-forward couple of hours, I decided to post a picture of it (it wasn't bleeding or anything) on Twitter. 2 seconds pass, and my account got suspended.

I have 2 simcards: one for calls, one for unlimited data.
Twitter is trying to call me to verify the account, but I have my data phone number in the profile.

FML.

2days i was programming for lis3mdl sensor, i used different circuits different lines of codes but the problem was none of them...
Look at the pic, my colleges just didnt see the simple word bottom , the footprinted pins clockwise instead of counterclockwise:(( whole 2 days gone!!

Can anyone please help me troubleshooting my PC? My PC won't boot even to BIOS. This happened several times in the past but usually jiggling the cables would do the trick, this time it doesn't.

What happened: PC powered up, power light went on, all fans turned on just fine, hdd light turned on for a few seconds before turning off, monitor didn't catch any signal from the HDMI

What I have tried with no luck:
- unplugged and replugged SATA cables, fans, mobo 24 and 8-pins connectors
- moved the harddisk to another SATA and power connector
- flushed the CMOS memory
- removed RAMs
- unplugged speaker, keyboard and mouse
- switched it on without the HDD connected

Any suggestions?

man if i could figure out how to do stuff and had the money to do stuff i'd be dangerous as fuck, but as of now i can only posit questions... it sucks.

Examples:
- What do modern browsers/crawlers do when hit with, say, an "HTTP 450 Blocked by Windows Parental Controls" or an "HTTP 374" status code?
- What happens if I do <xyz minor edge case thing> on <system?> (just use your imagination, this happens for every edge case i can think of for every system and the list wouldn't fit in a few megs' worth of half-byte ASCII, much less *here*)
- What if I made like a board to fuck with busses while systems were on? Press a button and for like five bus clock cycles pins like 6 and 7 are shorted? That sort of thing. As for system/bus types, *literally any* (old consoles with expansion ports, PCI/-e/-X/whatever, southbridge, etc.)
- What if I did <filetype> shenanigans by doing <something indescribably horrible> to this file? How do things react?

Anyone know the diameter of pins on a 3MM LED?

My PC just stopped working and I can't figure out why. There's absolutely no feedback to pushing the power switch. I feel like I tried everything the internet recommends, made sure the button works (it does, and so do the connected pins on the MB), held it down for a minute with the PSU unplugged, shorted the power pins manually, re-plugged all the cables, changed the CMOS battery, tried turning it on with just one RAM stick at a time.

I'm out of ideas.

So some voicemail systems let you press * to attempt to enter a pin to access the whole inbox. I bet you could even brute force it, as there are only 1000 possible pins.

Can someone explain why xc7a35t have a bunch of power pins for bank 13? There IS no bank 13 on that silicon. Wtf?

From one pc problem to the next, today while I thought everything was fine, my pc probably overheated and now the motherboard doesn't seem to boot anymore (rgb turns on, but the lights indicating the current step of the boot don't). I panicked and thought maybe it was the CPU, because it was my first time applying thermal paste and did the thing where I ripped the cooler off the motherboard and the CPU attached to it, which I only learned in retrospect that that was a thing. I slightly bent 2 CPU pins doing that.

So far no reason to be overly pissed than panicked, but then I decided to ask on r/pcmasterrace (or masterinsolent) and boy, probable because I mentioned the game I was playing I was only getting responses like "OP dumb, game doesn't do that. I love this game so much I let the developers fuck my wife while I am playing" instead of trying to help or clear up misunderstandings.

Thankfully a system/server admin I know was able to provide me with advice to fix the bent pins, but the motherboard itself still seems pretty dead.

I'll plug the cpu into my older motherboard tomorrow and see if that might be the reason. If you have additional advice, I would appreciate it

OK, so, I see PY files shared on GitHub. All I know is, it is code for certain apps or pages. I download SEVERAL DIFFERENT PROGRAMS trying to get PY to open. Some didn't work, others were in Console and not Form. I asked for help on the Forum, how to open it, they do the same BS; gave me a Console app that just stays black for less than a second, and closes. I ask for a Form version. They made the excuse that it wasn't a program like I was thinking. They rudely tell me to be polite, but something like this IS GOING TO HAPPEN if they can't get their crap working. Eventually, after I TOLD THEM I WAS FURIOUS, THEY HIDE MY QUESTION FOR 10 MINUTES. When I replied, I DID NOT CUSS, I REPLACED LETTERS WITH ASTERISKS AND SYMBOLS, AND STILL GOT SUSPENDED, FOR A MONTH, AFTER TELLING THEM I WAS FURIOUS.

On the other hand, I was using Audacity. I upgraded and a plugin stops working. I thought they messed something up, so I wait using the outdated version for the fix for a few months, and so a few months later I update again, at this point I was a little upset; 2nd update and it still doesn't work. After the 3rd time, I thought they just didn't want to take the time and fix it, as people probably would have reported it by then. So I rant on Audacity's Forum saying they didn't fix an error, showed them screenshots in all versions I got and the 3 newest ones show an error. THEY TOLD ME WHAT WAS WRONG! I was trying to run a 32-Bit plugin on a 64-Bit version! I downloaded a 32-Bit version of the newest Audacity, and the plugin worked fine.

Python could've done what Audacity did, but, "No-o-o, we enjoy banning Winston when he is peed off!" And just so, the Suspension ends a day after my Birthday.

I might just ask when I'm back on, "How to remove my user off this Forum", so they can say "I can't", and flag it as malware because I almost no longer want they're help, and CAN'T GET AWAY FROM IT.

Freak you in the butt, Python.

PS - If anyone knows how to use Python files in Windows 10 or know a free, non-demo program that will more-advancedly edit, save, open PY files in a Form, please, give me the name or link to the software, program or app in the comments.

Before anyone says anything, this page says "Rant", so don't ban this or I'm deleting my account. If this isn't a "Rant" site, please tell me, and/or rename this site.

That is the reason I came here, just to get my frustration out.

Wasted 3 hrs on this today:
-Wanted to control pi gpio pins from php web server
-shell_exec(gpio write x x) wasnt working for me
-made a python script for gpio toggling which i wanted to execute with shell_exec
-still not working. Changed permissions, changed code , did everything possible SO MANY TIMES!
-Turns out if i had added a '-g' in the gpio write command..it would have worked in the first place!
FUUUUCK!!!!!!!

I just found out about the firmata protocol and I’m geeking out a bit. I’ve been looking for something like it without realizing.

If you like microcontrollers, imagine what you could do with gpio pins on any device, with all the resources of a PC or even a smartphone.

I mean I knew this could be achieved, but didn’t know that anyone designed a protocol.

Using Sudo to run a node script that interacts with GPIO pins on Ubuntu (Minnowboard). The permissions suck.