#don't pwm on this day

[justasimpp]

marie getting punished bcs of kids she barely knows AGAIN i can't rn

[flyingwhalegirl]

Side note on this, LED headlights actually aren't good as a driver either. What they are is cheap and better than useless Halogens, but Xenon HIDs are far less blinding than LEDs while also giving you as a driver much better visibility and never flickering. You know why automakers don't use these anymore? That's right, because they cost more than LEDs (at oem rates, probably about $50 more per car). I got lucky enough to own a car from the few years that came with Xenons from factory and they are brilliant, but they only really caught on in the early 2010s with German brands specifically.

Also, people who do LED conversions in housings meant for Halogens, you are ruining everyone else's day with your PWM flickering reflecty garbage and OP is right to call you out.

I honestly feel like the proliferation of LED headlights was the canary in the coalmine for the general attitude we see in the political climate these days and i'm not even remotely kidding

[hospitalterrorizer]

diary517

2/27-28/25

thursday - friday

friend read the story i sent him recently...

he says he liked it quite a bit, good feeling!! he also said some things about wanting to do a small press at some point. i wonder if that will occur. it'd be a lot of stuff to get that going i think. but him saying he likes the story makes me think it's a go on compiling all these little stories i've got, see what it shakes out to. i should go back to some stuff i wrote in college. i think the first thing i ever wrote for workshop... that story is about weird things, it would be interesting to gut it and rework it, now that i'm here, rather than there. it was inspired by seeing an ex on campus, us both quietly passing, making eye contact, mutual fear and awkwardness over some mess of feelings or whatever. that might be worth exploring more.

the 2nd day of being headphoneless is okay. sort of annoying still, i don't like how short this cord is... minor complaint, but whatever.

i just saw this, it made me think of heidegger, the way he talks about 'being;'

today i was talking to a friend about parenthetical girls, i decided to send her a thing that sounded kind of like them that i made, she liked it but she said something funny, when i told her i used a vst that was samples of a stylophone, each note sampled separately, probably a couple times for variance on each note, she said 'aw! you could probably do that with fm' or something to that effect, i recall the 'aw!' rather precisely. which felt strange but i decided i would try to synthesize the thing, i suppose to see if it'd really be that easy. it is not so easy i think. for one, a stylophone is a pretty particular thing, it's a kind of shitty oscillator, run through a shitty speaker, in a cheaply made bit of plastic and metal, all rattling and resonating with the frequencies produced by the thing, there's probably saturation in the speakers, it's a nasty imprecise thing, the speaker stuff especially is why it's a sound anyone would either love or hate (i love it deeply), but this shitty oscillator isn't a simple saw wave or anything, if i were going by easiest oscillator to pull up in any synth, i always felt like it sounded like a pwm oscillator. though, in trying to do it today, that didn't work out so well. it worked okay, but not perfectly. the speaker puts a weird eq curve on the whole thing, and there's some stuff it seems to do that's very natural sounding through the speaker but with eq adjustments (in general i don't ever want to be making something sound like something else with the eq curves), it sounds kind of weird. so there's particulars to the sound already, and i don't think fm would be the way because... idk, fm never feels like the way, to me. it does useful things at times certainly but i just am never so compelled by it and frequently there is a quality of limpness to it. the stylophone is hardly anything more than an oscillator run without any subtractive stuff done on it, besides the eq curve of the speakers which peaks at 3k in a weird way, almost like a guitar amp, but also lets every other high frequency through too. there is like no low end. so all of this, i gave it a couple shots, to create a synthesized stylophone, on one, the process was that i was trying to match the eq curve of the sound precisely, which included some stuff i've noticed digital synths seem to really fumble with, which are 2nd harmonics... certain harmonics are strangely emphasized in the sound of the stylophone that something like a saw wave won't do...

this is someone's oscilloscope read of the relaxation oscillator in the stylophone, this is a strange shape:

also i love how it looks, it's a sick looking oscilloscope... reminds me of the ds.

here is the eq of the stylophone as sampled, you can see its weird dropoff after 3k but that it keeps all that information, which is something that is hard to come across in most impulse responses! it's probably from a lot of the resonances in the plastic creating weird sympathetic buzzing bits:

here is what the closest i can do ends up looking like:

a lot of that sort of smeariness between peaks isn't doing too much to the sound, i think. but you can see a weird and uneven climb up to 3k. but it doesn't sound so bad, it's honestly a good sound here and i feel like this is usable on certain things (i'm not sure where exactly i'd need it though, but maybe as something like a second stylophone in call and response to the other one, two weirdly different tones on a similar thing, maybe panning them, too). here is this sound in comparison to the stylophone, the first sound here is the fake synth:

and here is the first try at this, just like before the first here is the synthesized version:

i think the thing that frustrates me with either of these, that makes me think there's something not fully accurate about them, is there's a bit more of a roundness to the sound, the cutoff on the high end is super flat, it doesn't get rolled off at all really, it shelves down but it's not really disappearing, however on the ones i made, there's a rolloff moreso, and that's where the feeling of like, smoothness and some distance comes from. but there's some stuff i like about the first here, the 2nd (file not attempt, 2nd attempt is the one i am currently preferring) sounds maybe a touch closer, that's where i tried to just match the eq curve roughly and it gives it this sort of limp feeling, to me? idk, i think the first has some really weird movement in the high end, like some scattering distortion, it feels live in that way. but there's idk, something a little frustrating about it too, maybe something to do with the saturation or the amp simulator on it? that's the way that made sense to me to try this, though the amp sim will frequently add characteristics of 'space' to the sound that make it feel a tad... idk, in this, i like how closely mic'd the stylophone has been for the sample. maybe just cut more mids? that's probably the thing to do. this is sort of like when i am trying to make synth sounds that work like guitars except i am generally less precise and not looking at reference oscilloscopes from people reverse engineering the thing... although i actually used to do that, for the last album i was trying to get into more precise stuff. ultimately i think my point is proven though, at least a bit, i can make buzzy synth sounds i like, i always like more buzzy synth sounds, and i can elect to modulate these a bit more. i can play in higher ranges too. but i already had things that do that. now i suppose i have more. i guess maybe i'll try to mess with them, in songs. i guess i just wanted to prove to myself i can basically get close, there's no getting it perfect though i think. maybe my friend is some kind of genius, and she could figure it out. i guess i could try referencing that oscilloscope and try to get precisely close to the by drawing in the waveform in fm. i guess i'll give that a go. i wonder how it will turn out.

spoiler, it turned out also usable:

this one's got no cab sim on it, it does have some extra heft in the lower frequencies which is okay but still not ideal so i think it could still be cut out, ultimately. it's nice to have 3 synths now that i can use to make ugly buzzing sounds. drawing the oscillators was fun, also. i think any of these i can stick an lfo onto and modulate the pitch a touch and also have something nice there, like the vibrato on the original. this is basically fun to do, rather than working on more important stuff i can make some little weird sounds. maybe i should make some presets to occupy myself, musically, with some synths. just ugly weird things. and actually save them as presets so i can get them whenever i like. then if i need synths for songs i can just put something in, but i also like improvising sounds while listening to the song. who knows. i might just aimlessly create stupid presets, that never get used. the horror...

i just read these two one shot manga up on this old blog about ''''weird'''' stuff from japan (in general it seems more respectful than that but you know... it's kind of from that whole bit in the 2010s, and a touch prior, like late 00s to early 10s, where everyone would talk about how strange and wacky japan was):

they're untranslated but easy enough to get through and the japanese that is there is pretty simple, you can get the gist of some things, especially the second here, there's very little spoken, desert eyeball feels like it has a bit more. here are some of the pages:

desert eyeball:

a dream to have in heaven:

both feel pretty focused on similar things, it seems like meditations of failure of counterculture, the nightmare of culture at that time, desert eyeball feels especially focused on fascism in the west and the particulars of japanese fascism as fed by western fascism/capitalism. a dream to have in heaven feels like it's pointed at flower power type stuff, not in hate but in this sorrow over it likely not accomplishing much, it's also very pointedly about american racism i think, the prison system and incarceration, both tend towards a despair that i think people pick at in art like this as an expression of why these people failed, but i don't think so. both are extremely playful and empathetic, they have a lot of energy and care deeply about their surroundings, it's not quite at the point of feeling like the world is full of useless idiots, some fantasy of individual excellence and rightness destroyed by a world that's super stupid, instead it's pointing at ongoing horror, or things in the immediate past, that things feel like they're in a rut because of things far more powerful than you, there's all these scattered people doing little things (in a dream to have in heaven, a little girl seems to free an alligator, keep it as a pet, and then mourn it after it is killed), to improve the world or making some kind of effort, but they're all met with some sort of tragedy. the protagonist seems aimless and crushed, thinking about songs, wandering through the whole ordeal. also they're rather satirical but idk, it feels more venomous than funny, it reminds me suehiro maruo in that particular way, and maybe the fascist japanese boy, too. that's a clear image that connects the two. i also really like in a dream to have in heaven, the particular use of the text bubbles that have images in them, i think that's really clever and special. the one, especially, where the protagonist appears to be speaking himself, or the empty egg speaking the nationalist crest.

listening to orchid and reading that paired rather well.

someone just said something about not liking coil, in a server i'm in, which made me want to revisit coil, briefly. this record's such a classic... i don't get hating it really, it's like so in its own lane, and is enjoyed by such a particular range of people, maybe it's just cuz i like it, i guess there's a way to see them as annoying, if you're bothered by people trying to say they're trying to get at something abnormal or different in art, but idk, stuff like this was always rather nourishing for me, i found them in highschool, and it was like, a wow moment, to me.

though i suppose it was stuff like this off horse rotorvator that really excited me then:

it took a little more time for me to get the prettier stuff, though i was enchanted at the time a bit, but back then it was stuff that was like this in / around industrial music that would get me interested.

here's another strange one:

this one's just awesome, love that weird little synth, sounds like malaria. the bass synth is so nauseating too, it's just that warbling drone, crazy how dizzy it can make you feel, probably cuz it's in stereo and generally that's not considered ideal, especially if you were to play this in a club, but you could mono the bass frequencies in a pinch for that purpose, but because of that you generally don't get a lot of stuff where you get music messing with what low frequencies can do to you in stereo. also something i don't really ever do, but it might be worth fooling around with.

it's too late/early now... whoops... time flies when you're spacing out on the internet...

here's something strange, i am watching someone play this game, and heard this song in it:

sounds very angelo badalamenti to me. it's strange how one of the few things that can capture anything like what the first seasons of twin peaks caught were weird 3d adventure games like this, i think in the visuals too, a lot of the warm tones they end up using, emphasis on weird characters. at least the ones from japan.

i should go now,

so,

byebye!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[calyxmanta]

I don't have anyone else to tell this to, so my humble followers are going to have to read this 5 am vent mess.

I have been setting up my new PC's fans for two days and I have just now realized that it isn't the DC or PWM modes, the connectors or the headers..

I forgot to plug in the power cables. The fucking pwm cables. AND THE MANUFACTURER'S INSTALLATION GUIDE LEADS TO A DEAD LINK. I ONLY FOUND THIS OUT IN A DESPERATE YOUTUBE SEARCH.

I'm so fucking close to screwdriver lobotomizing myself /nsrs. I'm supposed to be up in five hours. Holy fuck

[little-witchys-garden]

Guardian demon superstition

As many of you know I grew up in a very superstitious family and community if I'm completely honest.

I'm sure we all heard of the Guardian Angel the divine all good natured protector that teaches you good values.

Well we had a Guardian Demon as well.

We were told your Guardian Angel stands on your right and your Guardian Demon on your left.

{ and all things else stand behind or in front }

We were taught that our Guardian demons were not bad things, just like the Guardian angel, they are both protectors in their pwm right which we've had in every life time. They've both been with us since the day of our creation and they both love us dearly.

They are both needed for a balanced life.

For example here are the main things I was told they taught us as kids.

The angel teaches grace, dignity, the importance of caring for others, love for others and forgiveness. They are the first ones that teach us compassion.

The demon teaches of pride in ourselves, love for ourselves, self respect, and to move forward. They are the first ones that teach us how to bare our teeth and growl.

We both try to teach us what's needed and what they feel is right though sometimes they can be wrong but it's not meant to harm or hurt. They truly are trying to help us in their own way. They were both tasked in being our guardians and will be so as they see fit.

Sure the demon has it's own motives but the angel does as well doesn't dismiss the fact they both love us dearly and will warn us in their own way when it's needed.

I was always told angels were more bold and extroverted while demons were more cunning and introverted though I suppose it differs with each person and their guardians.

But no matter what they both always accept you and love you. Their love is truly unconditional and unbreakable. Their acceptance of us has no limit, I'm sure there is times they could be disappointed but doesn't change they love and accept us.

When we are hurting the angel comforts while the demon spins a web to harm the one that hurt us.

Guardian angels love sending messages and telling us things, though

I was told as a child

" Always listen to your angel but when your demon warns you then you better listen good and well. If the demon tells you something that it's very important cause they don't like talking much. "

" Always ask your angel for help first and only ask the demon when it's completely necessary. "

[willoslab]

Project Three

Project Three! Not was I was expecting.

Here was my original pitch: You send messages from one piece of ceramic to another using vibrations. The vibrations are sensed by a piezo pickup on one piece, and sent to a web server. A p5.js application reads from the web server, and tells another Arduino when the piezo reads vibration. The receiver Arduino drives a speaker to match the frequency picked up by the piezo. The piezo could be read by following an Arduino knock sensor example (6).

Now in retrospect, there are several things that make this idea a lot of trouble. First, the piezo pickups I have are noisy and unpredictable, and generate a very low amount of signal. Secondly, there are three different points of failure in communicating from one Arduino to the other. The web server, p5.js app, and serial server must all work in tandem to send one message.

I did a lot of research to make the above idea possible.

First, the piezo was not providing usable values. I explored amplifying the signal with a transistor, but eventually discovered a great resource about op-amps (5). The resulting signal with the same piezo was so much clearer and true-to-life that it made the idea feasible again for some time.

Second was web communication. I used the modified example WiFiNINA web server by W Michelle Harris (10). The edits in this example assume you will be connecting to the RIT WiFi, like I was, but it is built on the general example web server, which is extremely helpful.

Third was p5.js communication with the web server. I got my professor's help on this one and no matter what we tried, it never worked. The p5.js httpGet example (9) was able to connect to the example website, but very few others. Sometimes it would run into CORS errors, but in the case of my Arduino's server's IP address, it just failed to fetch and gave no explanation.

In a last ditch effort, I switched to serial communication between two Arduinos, using a very good video tutorial (8). In spite of the video's clarity and the simplicity of the task, I was never able to trigger a response in the receiver Arduino. I could tell data was being sent and received using the serial monitor and logging the messages received by the receiver Arduino. However, data sent from the transmitter never registered as equal to itself in an if/else statement. I really don't know what could have gone wrong.

This is why my final project is missing serial or web communication. I did all I could with the time and experience that I could bring to the project. I'm very embarrassed about this because I love the idea, and all the various methods of Arduino communication have gripped my curiosity from the learning I did. I cannot get it done in time.

So what did I do? Earlier in the year I started building a very simple synthesizer using the Arduino tone library (2). I was still excited to work with the resonance in ceramic bowls and other pieces, so I blended these things together.

To get the synthesizer put together, I needed to figure out those breadboard buttons whose use had eluded me. There's a good tutorial on them (3).

Next, I decided I could use the piezo sensor as a controller for the keyboard instead of the set of buttons. Then, even if there was no serial communication, I could at least have two interactable bowls. I set up a circuit to take analog input from the piezo and then activate the circuit with PWM. This worked alright until I noticed that after a few beeps, the Arduino would lose connection to the computer and stop functioning. This usually followed a high reading on the piezo. I don't know what it is about my circuit, but I believe I was overloading the analog input.

It was after this, too, broke down that I decided to put my original tone keyboard back together, leave the piezo, and come in with something that I could show. It was 11:30 PM and I had been working straight through the last two days.

Here's a photo of my next-to-final project- the IC in the center is my op-amp, amplifying the signal from the piezo. The other side of the breadboard drives the speaker.

My final project is the example keyboard. The code for my final piece is taken from reference 2 and written by Tom Igoe. The schematic of my breadboard and wiring is also roughly the same, but I have also attached a photo of the circuit.

References:

http://thezhut.com/?page_id=1437

Arduino Tone Keyboard Example

good button tutorial

resistor color code calculator (this isn't cited I just need it all the time)

Op-amp Basics

Arduino Knock Sensor Example

datasheet for my AS358p op-amp

'How to make two arduino boards talk to each other' on YouTube

httpGet p5.js reference

the modified example WiFiNINA web server by W Michelle Harris

[matto]

Yoooooooo! Was hoping to get 3 books out this year. _Might_ still happen, but I hear 2 out of 3 ain't bad.

Second book (which I accidentally launched a few days early. oops. don't tell the librarians!): Poetry Works, Mostly

https://matthewoliphant.com/pwm

[integratelier]

On Feeling Like an Impostor

Imposter? 🤣

Yang saya ceritain ini ngga yang impostor syndrome yang bener-bener masalah banget atau gimana ya, cuma ya kerasa aja gitu kalo saya tu selama ini cem fake it till I make it gitu, khususnya dalam bidang akademik.

Dalam menjalani tiga strata pendidikan tinggi, saya mengambil konsentrasi di 3 bidang berbeda. Di tahap S1 ku anak microelectronics. Fokusnya di embedded system sama chip design gitu. Dan sampe sekarang topik inilah yang paling nempel dan paling bisa kuaplikasikan, walopun pemahaman dan skillku ga mendalam juga. Yah sekadar bikin program PWM doang mah bisa lah 🤣🤣🤣

Berkat kerjaan, S2ku jadi power electronics. Dan walopun at the end of the day prakteknya program PWM juga, tapi kan problem question-nya dari bidang power engineering dan jujur aja sih ku ga paham-paham amat. Saya merasa belom layak bilang kalo saya "anak power". Kek mindset-ku tu selalu mengarah ke bagaimana membuat alat yang bisa mengerjakan ini dan itu, which probably stems from:

1. Fokus S1ku

2. My personality as a person who likes to know how things work and how to make them work as autonomously as possible for me :v

Lanjut... tadinya sih sekarang mau ngerjain power electronics juga, cuman karena force majeure bergeser ke teknik kendali. Which I actually suck at, just because of the sheer level of math over there. Bidang yang saya paling ngaco in descending order:

1. Math

2. Informatics

3. Control theory

(Sebenernya dari aspek ga ngertinya, all these three tie for 1st place, but at least kalo kontrol tu ada fenomena fisiknya 💁‍♂️)

Jadi saya ngerasa ga bisa ngaku-ngaku "anak kontrol" juga.

Sebenernya sih, label tu ga penting. At least, I think it isn't. Cuman paling gampang ngobrol dengan orang tu dengan menyebutkan bidang besarnya, terutama kalo ngobrol dengan yang rumpun ilmunya berdekatan.

Dan karena hal ini, berasa impostor banget pas saya bilang, "Risetku bidang power." Masa kemaren ditanya statcom aja ku melongo dulu, padahal pertanyaannya ga substansial. Dan sampe sekarang saya masih belom ngecek apa itu statcom, just so that I don't have to know if I actually spouted nonsense that time.

Dan kalo bilang, "Risetku control of power electronics." Ntar ditanya hal-hal terkait teknik kendali ku melongo juga. Masa entar ke orang power ngaku anak kontrol dan ke orang kontrol ngaku anak power, saking ini-itu ngga ngerti 😅😅😅

.

P.S.: at this point, satu-satunya cabang elektro yang belum kujamah (kalo berdasarkan pengelompokan di kampusku) adalah teknik biomedik, karena di kerjaan saya pernah nyemplung ke bidang telecom walo sekadar nyari tau apa itu upconverter dan downconverter 🤣