Tech general - Sup Forums

post tech.
Since this is technology board and only consumer threads exist, I decided to make a tech thread.
Post tech you own

Other urls found in this thread:

youtube.com/watch?v=EN1owxFCrgs
bbright.tripod.com/information/postcard.htm
twitter.com/NSFWRedditVideo

best impulse purchase in awhile, sorry for shit pic, only have webcam atm

computers are not technology, as they are only a misapplication of science.

>Technology's a trap to distract you
>This shit will suck the soul out your ass like a vacuum

youtube.com/watch?v=EN1owxFCrgs

get on my level

OP here.
Reposting old shit

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>have so many fucking webms
>never finished anything of it

pretty nice, what did you use for that?

Motocross.
I acctually wanted to build a laptiming system since professional solutions are fucking expensive and my club has not that much spare money. Still not really finished.
Stuff lies in my shed for like 6 months now. Gotta keep working on it some day

Neat, is this a uC thread?

What are you controlling that with? I'm using an Atmel 328.

intresting thread. Made this yesterday for I could not find a BCD2hex converter ic at home. bored so I programmed some spare eproms I have.

after I programmed my eeproms and started connecting it... discovered more people do this: bbright.tripod.com/information/postcard.htm and used that as source for connecting my segment displays.

Its a Z80 (left aswell) in a test configuration, will build small cp/m system

Ok another one, if you guys arent into retro IC, used a Digispark to read some eeproms (i2c)

isnt this called deadbug style?

About to get started with assembling a power supply.

That's about it, I haven't done much more than keyboards yet. Though my boss wants me to automate parts of the production line, so building some machines should be fun.

>not using a pcb
jesus christ on a pogo stick

What kind of sensor do you use for that?

pleb
do something with an MSP430 or so instead

simple nrf24l01+
build an RFID-like system with em. I have a few thoughts to improve battery life of transponders and accuracy though. But I need to get much deeper into electronics stuff for that

Is that a tiva?

No. Arduino pro mini

too lazy to take a new picture

who /stm/ here

I built a PWM fan controller for my PC because I got fed up with how shitty/unstandardized/dumb fan controllers on mobos usually are and didn't want to wait on some SpeedFan support that may or may not come or may or may not work properly. Now that I've built my own shit I have full control over the way it works and it should be compatible with any PC I'll own in the future, as long as USB is a thing at least. The electronics are very simple since it's only generating PWM signals and not changing supply voltage for fans, most of the work went into the FW and in the PC-side control application. I'm very happy with the end result, it (obviously) does exactly what I wanted.

I built a 10-channel audio spectrum analyzer. I made a mistake during the PCB layout though so the higher frequencies are on the left instead of the right like what would be standard.

cool :D github or something?

>multimeter with nixie clock
the fuck

>clock
Nixies were used to display information on a lot of different devices before other components were a thing (LCD screens/7 seg/etc)

meant to write tubes

And I just assumed all multimeters before LEDs/LCD got popular were analogue

It did have a pcb at some point...

Nah, digital lab measurement equipment was definitely a thing even before that.

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The datasheet/technician manual I found for it suggests it was primarily used by the military. Most educational institutions in the 80s were probably still using analog meters and likely didn't have access to digital meters let alone those with microvolt resolution before the LED/7-segment display was commonplace.

Meter is the Fluke 8375A. I paid a little over $100 on ebay for it working. Internals are remarkable. It basically has one big mother board along the bottom and little sockets that all the different daughter boards slot into and there are loads. One for power, one for filtering, one for ADC, etc. It's a lot like a PC motherboard nowadays. Pretty ahead of its time. I should have taken pics.

My understanding of electronics doesn't even begin to approach the levels displayed by other people in this thread, but I just made this a couple days ago so it felt appropriate to post it. It's a 2-key keyboard with capacitive keys so I can tap faster in my rhythm games. The board is held on by rubber bands because I don't own a soldering iron and the base is cardboard wrapped in tinfoil.

rubber bands not pictured, I had to add them after this because the board would shift and diaconnect

just buy an iron, mate

What IDE do you use to program the STM32?

Used the Arduino in the past.
Currently experimenting with an IDE-less setup with opencm3

I just looked at prices for the first time and I'm completely dumbfounded at how cheap these are. I just assumed it would be over $50 for any soldering iron, but you can get a cheap one for $16.

Maybe I will buy one, I suppose I might as well since I've already got the breakout.

You can get a shit one for $16. You really should be spending a bit more for a good quality iron. It is worth the money and will serve you well.

Really the most important is getting one with a high enough power output to keep the iron hot even if you are soldering to a big ass copper ground plane that's whisking all the heat away from the tip. Adjustability is another plus. And get a chisel tip if you can.

This is a work-safe board.
Please refrain from posting porn!

>be me
>be OP
>wanting to start an embedded thread
>that shit wont last anyway
>shitpost instead
>thread goes on and on
I think summer is over, r-r-r-rite?

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A 936d straight from China for 20$ is my recommendation.
Small, cheap, digital temp control, and cheap replacement tips.
Great for the casual soldering.

don't jinx it

Ow sorry bout that, should I start a separate thread for electronic porn? any intrested ppl? XD

image: not my work, was today at veron con for amateur radio. im a noob in analog electronics. no license. (Apeldoorn, NL. once a year)