Electronics thread

>>58294646
why did anyone make this

>>58294661
It would make a good teaching demo maybe..

>>58294646
>>>/diy/

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>>58294862
No

>>58294661
Heat is all I can think of

>>58294646
that's a big resistor

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>>58295082
4 u

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>>58294646

Anyone designing their own?

>>58294702
Is that a PCI soundcard ?

>>58294661
For fun.

>>58294646
It's a bunch of half watt resistors all soldered together and then to the ends of two rods and covered in plaster. The guy made a few of those but I don't have the other images on this computer.

>>58295127
I'd like to but where I live it's a pain to buy components, no IRL store.

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>>58295163

ebay has the finest electronics components made by suicidal Chinamen.

>>58295127
>tfw too much of a tard to into ultiboard

>>58295189
I know. But as a beginner I always forget some part. Which makes my projects stalling forever.

Not an excuse though.

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Uprising soon

>>58295082
4℧

>>58295247
its clearly 100 ℧

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>>58295219

That's eagle, and there's a lot of schematic and CAD software out there. Just futz around with it some and watch some videos. That's what I did. Picked it up in a few weeks in my off time from work.

>>58295229

Absolutely that's no excuse. You can get cheap as fuck components from China that ship free.

>>58295240
Skynet.

>>58295274
False. That's it's resistance

>>58295312
sorry my mistake

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I decided to do something for the Moog circuit challenge this year. It's an NES Zapper controlled drum machine that controls a bunch of kids toys.

>>58294646
any tips on stripping small ass 26+ gauge wires? Was trying to repair my girlfriend's lightning charger but I kept tearing off the wiring in the teal and white lines. Red and black stripped easily but I am pretty sure they were a bigger gauge.

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>>58295754
Sequence of analog values manipulated with the zapper. There's no microcontrollers, just old school discrete components.

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>>58295754
>all the bare copper

>>58295783
a lighter and nail file should do the trick

>>58295886
Do you literally sand the tube off the wire?

>>58294646
Can anyone link me a good starter tutorial for electronic basics?

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>>58295754
Jesus fucking Christ, anon.

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>>58295938
No

>>58295938
>>>/diy/ohm

>>58295938
>>>/diy/ohm

Also, I just bought a bunch of breadboards and components to toy with. Comp Org and Arch books are great too.

>>58295285
eagle is a bitch to use compared to kicad.

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>>58295938
https://shodan.me/books/Electronics/

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Not pretty, but it works.

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>>58296011

>>58295142

yes...?

It's hard to tell if it's PCI or ISA as its not hard to build ISA card's.

>>58295274
It's obviously 0.01℧ anon

I really need a collection of vintage build-in volt and ampere meters

>>58296122
What does it do?

>>58295127
Lets see how much I understand. The circles at the top, connected to a 220V, supply are for Nixie tubes. The four chips below them convert a binary representation of a number into the correct signals for the corresponding display number. These four chips and everything else besides the Nixie tubes are powered by a 5V supply that's regulated by some kind of special regulator chip. The four capacitors below each of the display driver chips are to keep the supply steady. I don't know what the fifth capacitor between the two middle ICs is for. The 74HC595D chips are shift registers that are hooked up to the display and the larger microcontroller chip to the left of them. And there's a crystal or something for the 16Mhz clock? I'm not really sure anymore. Is the power jack at the right powering all of the system including the displays? Are the sets of four contacts at the bottom of the screen for USB?

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>>58296485

Pretty much yep. The two contact pads in the upper right goes to a 200V power supply.

I have to change the lower left hand contacts which pins they go to and add one more so I can upload code directly to the micro controller.

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Why is it so hard to find .110 quick disconnects?

>>58295908
No, you use the lighter to burn off the insulation and the file to take care of the soot

>>58295240
are you fucking trying to get us all killed?!

>>58295790
Holy fuck.
Nice work.

>>58295790
that's really impressive, especially with no micros!

>>58296195
that's 8bit ISA

>>58295790
Reminds me of superhot for some reason
Nice job

>>58296122
It's a bsiab distortion pedal

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Thoughts?

https://www.youtube.com/watch?v=f1lIyVvzhlU

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>>58294646

Hey Guiz. I just repaired a set of Earpods for a friend. Rate my skillz.

>>58296548
I want to get like 8 of those, put them at my bar, and make them start counting down from 99999999. When people ask you what they're counting down to, you just smile.

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any of your motherfuckers actually studying EE?
I'm in second year trying to figure out what the fuck I'm going to do with my life. life's getting really real really fast and I still feel like a dumbass 16 year old kid on a mongolian transistor market forum.

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Tried to make a DIY speaker amp yesterday, it failed miserably by making no sound at all.

It was a presoldered chink thing and a complete waste of my precious shekels.

Still decently mad about it, but eh. At least all of the other shit I made so far turned out bretty gud.

>>58298504
Cool as fuck, like a candy store.
However, I'd still prefer to use Digikey for professional work, since buying the correct specced components are more important that anything else.

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>>58294646
So I bought a few of these to try and make my own power bank. Could I limit the output to 1A somehow to increase efficiency? Could I replace the components with better quality ones from laptop or desktops? I have access to a lot of dead computers since my family runs a pc repair shop.

Would have preferred something like a maxim 1709 or 1763, but those are pretty expensive for me at the moment.

>>58296011
>https://shodan.me/books/Electronics/
anon what is this shit. Is it a reliable server or do I need to get these books in my drive?

>>58295951
>David J. Kuck
>Kuck
can't make this shit up

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>>58295940
Final soldered version looks a lot cleaner.

It's easy to make a protoboard circuit look nice when you're just copying someone else's design. If you're experimenting and working things out as you go it's wire spaghetti. You gotta figure out the circuits before you can figure out the optimal positions for it's components.

So /g/ if I wanted to build a very basic analog synth or a guitar pedal where should I start?

>>58299248
Atati Punk console is where most people start.

>>58298737
>Could I replace the components with better quality ones from laptop or desktops?
As someone who designs and builds buck and boost converters, that's all top notch components, probably better than what you have in a laptop.
If you want to increase efficiency, you need to go to a version that uses a switched mosfet instead of a flywheel diode.

>>58299402
oh, wait, 'Bonens', ha, got me. Looks just like a Bourns cermet trimpot, it almost nails it.

>>58299402
Is there anything else I can do? Add capacitors?

>>58299418
It's a continouous-mode buck-down. It doesn't really need an output cap, but you can add some if you want to filter noise... It's not going to have much noise to start. The litter ceramic caps are going to take care of most of it anyway.

>>58299479
Could i limit the output current?
I want the best efficiency, within reason.

Thanks for the answers though, and sorry if anything is super stupid, I'm still learning.

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>>58294646
>yfw some madman actually made this

>>58298504
this used to be the place until shenzhen and the rest of the pearl river delta took over

>>58299522
On one that simple, you either limit the output voltage or the current, not both. Looks like a voltage model, yes?

It's probably current-limited already otherwise it would be really easy to blow up.

>>58299596
I'm not sure anon. For 50 Australian cents I'm not sure what I should be expecting...

>>58299546

DOES NOT IMPLY RESISTOR CAN HANDLE LOAD @ 100OHMS @ 1KW+

>>58298586

electronic "engineer" here
i finished school 4 years ago and remember absolutely NOTHING...used to like designing etc but got into another line of work after finishing so...whenever i stumble upon electronics related stuff (circuit design for example) i get horribly frustrated not understanding from just looking at it

>>58294661

It's for audiophiles. They need really big resistors to go with their really big capacitors.

I can't hear the difference though.

Let's hack Dark Knight !! Fun to be had.

>>58295294

That's the T500. Just three generations to go.

>>58300256
That's how it goes.
I used to be really into it during my teen years and obsessively worked on little projects every free moment I got.
At least I still know how something is working when I look at it. Almost nothing seems as impressive or futuristic once you've been in the guts and know 90% of this shit is the same basic circuitry of the past 50 years tied together and tweaked in different ways.

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>>58296011
>https://shodan.me/books/Electronics/

>>58300492
cute

>>58300492
any better resolutions for this?

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>>58301015
Yes

>>58300623
Well duh. Electronics, be they analog or digital, are nothing more than regulation of volage potential/conversion to another enegy form. It's like building a mathematical equation out of components based on their properties.
The cool shit is when some madman comes along and stirs up the pot with shit like pulse width modulation.
The hardest part is making sense of the abstract. People want to visualize the electricity flowing around a designated path, which is ok for following a wiring diagram of a car but doesn't work at a hardware level. You gotta let that shit go and just accept things work the way they do because of shit way over your head and math is always the answer.

>>58294702
that is pretty fucking cool.

>>58295951
I bet his wife's son enjoys electronics too

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>>58295940
That's not messy.

This is.

>>58301409
Whats going on here my man?

>>58301627
A STM32 board connected to 8 multiplexed seven segs and a key matrix from a cheap Casio clone using 2 shift registers.

Planning to make my own calculator but currently it just displays the key code of the last pressed key to test the hardware.

>>58301409
Cool calculator, Ahmed. Want to bring it to the White House?

>>58301685
>STM32
Is that one of those ARM based micros? How do they compare to 8 bit ones? Im currently playing around with an 8051 based one.
I would love to try out an ARM based one sometime

>>58301736
Extremely powerful in comparison. You would only come close of their full processing power with calculating complex stuff like filters.

>>58301736
Yeah, it has an ARM Cortex M3 core running at up to 72MHz.
And this a dirt cheap board that you can get for less than 2$ on ebay/Ali.
And you just need an ST-Link clone (also around 2$) to program it.

It is harder to program for than simple 8-bit MCUs (I'm using plain C with libopencm3). But since it's so powerful you can get away with fairly inefficient code.

>have solid state stereo
>can hear a hiss (I don't know if it's new or not, but I'm definitely aware of it now)
>some people say hiss is normal
any advice? I'm thinking of deoxit, since I've heard that can help. I'm sure hiss is normal, but I don't believe the amount I have is

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I don't know if this is the right place, but I'm really bad at electronics and I have to mod the NW-800 microphone. What guide shouldn I follow? This one? (Pic related)

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>>58302338
Or this other one?

>>58302233
Ask someone over the age of 40 if they can hear it.

>>58301804
>libopencm3
Tell me more
What can it do compared to HAL and SPL ?

>>58298586
I am. I feel lost too it's okay. As long as you aren't like actually failing everything.

Find people to study with, it makes things easier than doing it yourself.

>>58302748
For ST ARMs it does less and is a bit less abstract.
But it's FOSS, supports non-ST ARMs, and I prefer their API over ST's with their pseudo-OOP style.

>>58298544
Nice job

>>58302233
How old is it? Steady hiss can be caused by many things, including dirty pots and switches, but if it's >20 years old it probably has some leaky caps or transistors.

>>58298645
This. You never know what you are getting at the local Chinese market.

>>58296195
IT's ISA. No keying slot for the voltage, and the components are on the other side of the board.

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Electronics that you throw in the garbage can

>>58295189
>LCD nixies

TELL ME YOUR SECRETS

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I've decided to start learning electrics.

>>58303320
7 segment VFD, not nixie

>>58302852
yeah I'm not failing but I did just almost fail a semester. scraped by with 2 Cs. scary shit, man

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Found a use for my RPi.

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get on my level lazy fuckers ;^)

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>>58302233
The hiss means it's working and your hearing isn't gone.

>>58304523
ThinkPad compatible battery pack?

>>58298586
I'm studying EE, and It was pretty disappointing when I first realised how much the field works in electromag and dynamics theory rather than physical electronic work. The maths is sweet though.

I just want to make robots desu

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Just etched my very first pcb.

Unfortunately, I fucked the toner transfer up a bit and a few parts weren't covered completely.

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>>58302233
Contact cleaner doesn't fix hiss, it fixes scratchy controls.

>>58302338
Follow mine and do it the fancy way. There are pictures in the description.

https://www.youtube.com/watch?v=0lpQ0BpjUtg

Can someone recommend a Linux alternative for electronics simulators.
Like I mostly deal with microcontrollers with some mixed signal circuits and i need to simulate these circuits.

>>58298586
CompE senior here. I've taken all EE classes required for my major. The lab courses absolutely killed my love for electronics though. Thankfully i don't have to take any more labs all i have are major electives and im using those on theory classes, math and comp sci. I barely know how to use a breadboard and have no clue how to use a fucking oscilloscope.

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>>58298567

Wouldn't be too hard to do. Would probably cost like $50 in total for all the parts. Well worth it to fuck with customers.

>>58303320

ebay. VFD nixies are widely available and relatively cheap.

>>58303723

They are nixie style. They were made as replacements for nixies (not voltage wise, but form factor). I can see why people call them nixies, as I also call them VFD nixies.

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>>58306120
After breaking two drill bits and frying one IC by accidentally reversing the polarity, my regulator breakout is finally finished.

>>58303411
Why multiple chinkshit multimeters?

>>58294646
Why is that resistor so T H I C C

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>>58298586
Finished my EE degree 5 years ago, I've just been doing non-stop management work since I was the 'highest educated'. I'm starting to feel the techs I manage have better knowledge of electronics than me. I go into a sweat when they ask me about stuff since I forgot almost everything from university and have to google everything from buck boost to bandpass filters.

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>>58309283

Do some refresher stuff to get back into it. As a mechanical engineer I found that it's actually a lot of fun to start a project then figure out how to make it along the way researching what I need. I went from just about zero to somewhat competent in a few months of off time study.

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>>58308540
For when the first one breaks

>>58304523
the infidels shall know the word of Allah my brother. TAKBIR!

>>58298586
MEng Computer Engineer here. I didn't really know what to do with my degree either to be honest, I now run the technical side of a software development company I co-founded. I expected I'd go into embedded systems development because I really enjoyed and understood the area, but life always changes and now I spend most of my time managing a team of developers and liaising with clients. So you shouldn't really worry if you don't know what you're doing with your life, just try to get good grades and prove that you're not an incompetent fuckwit.

>>58306405
https://circuits.io/lab
???

>>58310555
?

>>58310938
meant for >>58306918

>>58295240
No weaknesses

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>>58294646

>>58306405
i just want you to know that i would lick you from your ass hole to the tip of you dick

>>58310938
Are you going to make a video of yourself upgrading or restoring your luxman? You said in some other thread that you were considering doing some upgrades, and I was thinking that'd be interesting to see

>>58310059
MY SIDES

>>58304523
what ive always dreamed of.

do you have a schematic or parts list ?

>>58314607
are you serious?

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>>58303723
>>58308279
Nice, but then they don't really look like nixies. I mean the grid is there, but the shape of numbers is just classic 7seg, while nicely shaped numbers is the real charm of nixies.

Why aren't there chinks making actual nixie replacements out of LED lit plastic tubes? I mean shit, pic related exists, the tech is there.

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I have to design a transformer but dont know how to calculate/simulate the power rating in Pspice for the secondary circuit in picrelated.

Send help for Optimus Prime.

>>58317195
Ayyyy, in case anyone's interested:
AC Sweep -> Power Dissipation Markers and cursor @ whichever fq you're interested in.

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>>58296011
>tfw gonna hoard all these books but never going to read a single one of them

>>58308164
This happened to me. My love for the hobby died, so I'm finishing my CE degree and going into networking.

>>58300547
Underrated

>>58317775
What is the go to book for learning electronics from the start?

>>58295082
So was ur mum m8ee

>>58306120
Hint:
leave as much copper as possible as a ground plane.
1. your chemicals last longer asthey dont have to solve so much copper
2. better grounding, shielding, emc