Post your idiot spare time projects. i'm the subtle buttocks

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > YOSPOS > Post your idiot spare time projects. i'm the subtle buttocks

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Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

echinopsis posted:

im trying to learn electronics a bit

the problem is i dont have a goal or anything to achieve

so its just buying and LED from dealextreme and hooking it up to power supply. whoop de do now what?

buy an arduino and then call yourself a Hacker/Maker because you flashed that LED using code someone else wrote

# ¿ Jul 22, 2013 11:57

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# ¿ Sep 12, 2024 03:29

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

i dumped the ROM from my cars ECU, disassembled the code, and have been slowly working through trying to figure out what it does

what's weird is that even though it's pure 8052 assembly you can see where different people worked on it because the code is so different

# ¿ Jul 22, 2013 20:19

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

movax posted:

dude, share this

can't be one of my ecus since we were mostly v850 and hc11/hc12 based, so can't help much if at all

it's a bosch motronic ml4.1 system from a peugeot 4-cylinder 1.9L, but the same basic system was in a few late 80s cars, and other 80s motronic systems aren't massively dissimilar - porsche, bmw, opel, fiat, alfa, etc

http://www.sendspace.com/file/s3oyjg - contains original binary dump, disassembly, and a circuit diagram (which is from a different car, but is 95% identical)

0x0000-3fff is code. engine maps and constant tables start at 0x4000. code is only about 20% commented right now, and only a few tables fully identified

Sweevo fucked around with this message at 20:51 on Jul 22, 2013

# ¿ Jul 22, 2013 20:48

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

got any links?

trying to follow what the hell is going on with the rpm calculations is driving me crazy.

# ¿ Jul 23, 2013 17:44

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

jackdh4x0r posted:

here is the wiki site we setup. I had to cancel my vhost so it is hosted by another guy
now, and somehow some of the downloads got corrupt. Unless they have fixed them by now.

PM me if you want something specific from there; i have most of it in my dropbox somewhere

Also, are you talking about RPM calculations on the data tables? On LH2.4 at least, Bosch did it a really funny way, probably to save bits or something. Can't remember exactly how it works but feel free to hit me up.

thanks, that gives me some reading material for this evening.

i meant how the code actually works out RPM from the flywheel pickup. timing is accurate to 0.75 degrees, but i can't work out how as the timing teeth are 6 degrees apart. i guess it's different on the jetronic because it only does fuel, whereas the motronic does ingition too. the timing code is all interrupt-driven and has multiple tooth counters going on, and can compensate for mis-counted timing teeth. its really hard to follow

i figured out the table-reading code a while back. it's not how I would have written it, but it makes sense once you get your head round it. it reads like they were trying to save ROM space. the early motronics only had 8K so that makes sense, but mine has 32K and is 40% empty so they could have done it much more simply. i guess they just stuck with code they knew worked?

# ¿ Jul 23, 2013 19:33

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

"whats's this strange box doing here?"
:byodood:

"zomg ur hacking da govment!"
:cop:

"you are sentenced to 80 years in prison for treason"

# ¿ Jul 26, 2013 12:47

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Jonny 290 posted:

whats worse. young sperglords or old ones

i'm going to go old actually because they have decades of being set in their ways, built in inertial guidance system

*rips efi off car and replaces it with a carb that's been sitting in the shed for 40 years*
*swears its better despite the car now having 100hp less*

# ¿ Aug 1, 2013 16:30

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

spankmeister posted:

uk is 240v so it'll be a bit less amps even.

its 230V

it's actually 230V +/- 10% so you should make sure your calculations are correct for anything between 207-253V

# ¿ Aug 12, 2013 10:41

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

quazi posted:

Everybody is familiar with the concept of a bloated installer. Stuff like iTunes, NVIDIA drivers, the whole OS.. and not just Windows -- Mac users are having to deal with this crap too. Everything is getting too fat, and it's not just the nerd siting in the chair.

The absolute last platform I expected to see a bloated installer was an IBM mainframe running z/OS. For those of you not familiar with it, this is a text-based world full of simple-looking stuff that performs insanely powerful tasks. The closest thing I can equate it to is Unix or DOS, and even then, that analogy breaks down within seconds.

Even though I've only been a system admin for four years, I still have experience with products like: IOF, CA Disk, TMON, MXG, Syncsort.. Due to the spartan interface on this platform, products don't install anything remotely looking like a whiz-bang feature. Most mainframe programmers pride themselves in writing software with as little overhead as possible. Most of the time, an installation routine involves a series of batch jobs where you edit some dataset names to point them in the right direction, run those jobs, edit a couple config files, and boom -- you've installed something!

For the longest time, the most complicated install procedure I encountered was to verify that a handle in CA Disk was configured to view dataset control blocks in such a way as to make the backup utility jobs not mark the 'last accessed' field in datasets they were looking at. Stuff like that can twist your brain into knots if you're not careful, but even then, configuring it was a matter of setting a parm and executing a job.

Most software weighs in between 10MB and 100MB, while CA Disk was around 600MB. (oooh! it nearly filled a 3490 tape!) But when you consider that it's a third-party replacement for a fundamental part of the OS, that's kinda expected.

Enter SAS, an 800-pound behemoth of statistical analysis software. We've got several departments who rely on this, and since I'm the junior sysadmin, it's naturally my job to make sure the software is kept up to date.

I log into the SAS website and find the latest installation file (Release 9.2). It's 8MB. I think, "that's not bad for something that does so much! This mainframe platform sure is efficient!"

I then follow the instructions and upload it to the Unix side of the system. (Background) All of the latest IBM mainframes are divided into two sections -- z/OS and Unix, where the Unix side is also known as OMVS (Open Systems). The OMVS side is more of a vestigial growth that hangs off z/OS, but the two sides have complete read-write access between eachother.

The next step in the process is a bit baffling. "Set up an X Window server on your workstation." It turns out that the installer is a panel-driven wizard, and now the mainframe, which up until this point has only dealt with a text interface, now has to drive a graphical interface. I can't help but wonder what the hell the installer could possibly be doing in the background that I couldn't do by hand, but I was curious to see this. (Also, it's the only method for installing the product.)

My supervisor hooks me up with an IBM-recommended X-server, and upon running the SAS installer and connecting it to my workstation, a little "Press 'Next' to continue the SAS installation process" window pops up on my machine! Sure as poo poo!

But as nice as that sounds, that's when everything starts going to hell. My mainframe user account spikes to 100% CPU usage and stays there as long as I have the X-server connected. This triggers a resource shortage, which triggers a red message on the master console, which leads to a phone call from the folks in the datacenter making GBS threads themselves asking me if they need to worry about this. The next big surprise is that this installer doesn't actually install the product, it's just a downloader. Remember when I said that we mainframe admins consider a 600MB installation a big thing? Well, the SAS Downloader pops up a message warning me that I don't have the space to download all 7.8GB of the product.

SEVEN POINT EIGHT GIGABYTES?! GREAT SCOTT

I feel the need to remind you that this is a product for a text-based interface. "What the hell?" doesn't even begin to describe what I'm thinking. First, what could possibly be in it? Second, our system cannot allocate an OMVS volume big enough to contain it, and I'm pretty sure a company with such a rich mainframe heritage as the SAS Institute would be well aware of this type of limitation. (OMVS volumes are actually z/OS datasets, and the largest dataset we can allocate is 10,000 cylinders*, which comes out to a little bit less than 7.8GB.)

_{*-- There are ways around this, but it's drat tricky once you've put the machine in production.}

I hop back on SAS's website and find a Windows version of that same downloader, along with instructions for downloading the data to my workstation and then uploading it back to the mainframe. Even though I don't have the space to upload it, I want to see what's in it.. And yes, I verified with SAS tech support that both the z/OS and Windows versions of the downloader get the exact same data.

I use WinDirStat to try to find out what is making this sucker so damned big.

- It has a tree with over 1500 subfolders.

By file type:
- There are over 500 JAR files (which it probably uses), and they weigh in at 1.8GB.
- There are nearly 100 ZIP files, and they're 1.6GB.
- Some "PAX" files.. 1.3GB.. (if they're what I think they are, they're kinda like zips)

But the next one is so funny it makes me cry inside:
- 191 EXE files, 853MB.

You know, "Windows executables".. Programs that run on Windows. Programs that have no business taking up precious space on a mainframe because z/OS considers them to be complete gibberish. The average mainframe is so big that it makes a Windows box look like a cell phone, and ours is no different. It needs Windows EXE files like a fish needs a bicycle. "What the gently caress is this poo poo doing here, SAS?!"

I check the folder tree, and there's 200MB of .Net redistributables and service packs, 220MB of ACE redistributables (in nine different languages!), 176MB of JET redist (in 20 languages), and over 1GB of products that can only be installed using their respective "setup.exe" files. It turns out that the SAS Download Manager grabs the installation data for every single platform for which SAS is available, and it doesn't give you the ability to 'uncheck' any of it. It's all 7.8GB or nothing.

I call SAS tech support to see if there's any way to get a smaller installation package (similar to the previous version, which was about one-tenth the size)..
-- Their answer: "no."

-- Me: Can I just delete all of the EXE files, and remove the folders that are obviously installing stuff that is foreign to the mainframe?

-- Them: "Uhh.. that's a bad idea. This installer is Java based, and Java is cross-platform and it might need to access some of that data and possibly execute some of those exe's in the background."

Let's just say the conversation fizzled from there and I gave up.

gently caress it, we're sticking with SAS Release 8.2 until the end of time.

# ¿ Aug 12, 2013 18:29

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

and why he posts hour long videos of himself opening his mail

"oh look, someone in spain sent me six LEDs, lets talk about them for 15 minutes"

# ¿ Aug 24, 2013 11:00

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

802.11weed posted:

gonna buy three electromechanical pinballs from the mid-late 70s. i do not have room for 'em but gently caress it, it's a good deal

late 70s is probably the last time any of them didn't have any parts missing

# ¿ Aug 27, 2013 14:19

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

why not make a game people actually want to play? instead of "lovely rougelike #2347"

# ¿ Sep 1, 2013 21:19

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

i honestly wasn't trying to be a jerk (it does read that way though). it just seems sort of pointless that people keep reinventing such a boring type of game.

# ¿ Sep 1, 2013 21:57

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

was he half-deaf and covered in burns

# ¿ Sep 3, 2013 00:28

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Doc Block posted:

Ugh. Looks like I'm gonna have to use two MCUs for my stupid beer temperature logger thing.

The 16x2 LCD I want to use needs 11 pins, plus I need 4 for reading/writing an SD card, another pin for SD card detection, 2 more for talking to the real-time clock (via I²C), an analog pin for reading the temp sensor, a pin for controlling LCD power (via transistor, probably), a pin for reading the LCD power on/off switch, and pins to check other buttons (for setting the time, date, view highest/lowest temp, etc.).

All the input buttons can be connected through a shift register, but that's still way more pins than one ATmega328 has. I've got an old ATmega168 that I can use to drive the LCD, so it isn't quite as wasteful as two ATmega328s, but still...

you can read multiple digital inputs/switches with one pin if you connect the inputs through a resistor ladder to an a/d pin. you can easily get 6 inputs on one pin

# ¿ Jan 11, 2014 18:31

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

I keep meaning to get back to some of my old DOS programming projects. I started making a graphics library that targeted only old cards (Hercules/CGA/MCGA/Plantronics) but got bored with it. I also started writing a TCP library and got as far as setting up an interrupt handler for the packet driver, receiving ethernet packets, and sorting out ARP packets for processing, but then I discovered mTCP already existed.

Sweevo fucked around with this message at 16:07 on Feb 12, 2014

# ¿ Feb 12, 2014 11:53

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

change the transistor for a mosfet. there's less voltage drop across them when fully switched on.

# ¿ Feb 14, 2014 12:38

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

"faster" is relative. you're not switching at RF frequencies. even the slowest mosfet is plenty fast enough for pwm voltage control

# ¿ Feb 23, 2014 20:57

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Doc Block posted:

the PCB for my fume extractor came in

yes, it's purple. apparently Osh Park orders all their PCB batches with purple soldermask.

i see the eagle auto-router hasn't improved

"hey lets route traces 0.5mm from solder points even though there's 10mm of space"

# ¿ Mar 11, 2014 15:32

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

it's not like it's moronically stupid. the solder mask will stop you creating shorts 95% of the time. it's just the auto-router doesn't seem to make the best use of space, and will do things like route really close to a component, or between the legs on a chip when there's another route available.

its main priority is to reduce the number of vias (the plated holes that join the traces on one side to those on the other). on big densely-routed boards that matters because you often have to pay the PCB manufacturer extra if you exceed a certain number (say 500), but for small boards with 10 components it still assumes routing really close to component pins is better if it reduces the number of vias from 4 to 3.

Sweevo fucked around with this message at 15:55 on Mar 11, 2014

# ¿ Mar 11, 2014 15:50

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

stick to serial for now. there aren't really any simple ways to do video. it would be great if there was a single chip solution that looked like a ram chip to the cpu so you could just wire it up and anything you wrote to it appeared on the screen, but there's isn't one that i know of. all you can get are either crt controller chips that require their own ram, an external DAC, and 20 ttl glue logic chips, or 90s-era vga/svga chips which are designed to work from an intel style bus and all come in annoying surface-mount packages and are hard to get hold of in single quantities.

for a basic system i'd go for the z80 over the 6502 as well. the 6502 is a scrub tier processor with weird bus timing that makes using peripheral chips awkward. whereas a z80 will literally work with anything. z80-compatible peripheral chips are far more common, and cheaper too.

# ¿ Mar 12, 2014 13:57

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Citizen Tayne posted:

It's probably the most influential microprocessor ever made.

lmao no

# ¿ Mar 12, 2014 15:48

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Citizen Tayne posted:

The 6502 singlehandedly took microcomputing out of the realm of expensive hobbyist toys and into the average dining room. If you don't recognize the effect that had, you aren't qualified to have an opinion.

not really, the computers it was used in did that sure, but that's not really down to the 6502 itself is it. home adoption of microcomputers was driven by falling prices and available software libraries, not the cpu those computer happened to contain

the 6502 isn't what made the 2600, c64, or NES a success.

Sweevo fucked around with this message at 16:07 on Mar 12, 2014

# ¿ Mar 12, 2014 16:04

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

please enlighten us what was "influential" about the 6502. not why it was popular, because popular != influential. what specifically about the processor itself was influential? because it wasn't the bus design, or the instruction set, or the programming model, or the hardware design, or the production method, or anything like that.

# ¿ Mar 12, 2014 17:22

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Citizen Tayne posted:

You are an autism victim if you don't understand how popular = influential. The 6502 was cheap enough to put a computer in every house that wanted one. A lot of people cut their teeth on programming with them. More users meant a larger and more diverse software library.

Were it not for MOS pushing prices into the basement, the computing landscape would look very different now.

What hosed up idiot world do you live in where popular products are not influential? Do you live in a world where everything is judged solely on technical merit?

this whole discussion started because a guy wants to build his own computer, now in 2014, not in 1977. and your whole argument is "the 6502 was in a popular product, therefore it is good, therefore the guy building his own computer today should choose it over the cheaper/better alternatives."

# ¿ Mar 12, 2014 17:35

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

i dunno. i think building one can be a good learning exercise. the big plus point to 8-bit stuff is that all the chips are available in DIP packages so it's easy to hand solder everything, and adding memory and peripheral chips is really simple. even just the step up to 16-bit means everything is surface mounted and the bus designs don't really lend themselves to just slapping on more chips and everything just working. plus 8-bit cpus are slow enough that you don't have to worry about all the spergy stuff like track lengths and clock phasing

# ¿ Mar 12, 2014 17:49

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Dr. Honked posted:

i've seen a 2N3055 explode in a shower of sparks and a dribble of glowing molten metal. good poo poo

2n3055s are all fake now. an old 70s one would still work fine while glowing red hot

# ¿ Mar 16, 2014 23:54

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Doc Block posted:

looks like UnrealEd supports OS X now.

very interesting...

all real game developers already use windows/linux toolchains, so all osx support means is more terrible amateur games, probably about slenderman

# ¿ Mar 19, 2014 21:57

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Luigi Thirty posted:

if i wanted to buy a AY-3-8910 off the internet, how can i reduce my chances of buying a fake chinese knockoff?

the chinese knockoffs generally do work. whether they last 20 years of 24/7 use is another thing, but i guess it depends what you want it for. otherwise a lot of the new-old stock chips are real 8910s with the registers at different addresses that were made for OEMs back in the day. if you're modifying/writing your own software then these are perfectly fine.

otherwise the yamaha clones like the YM2149F seem to be easier to find

Sweevo fucked around with this message at 17:55 on Mar 20, 2014

# ¿ Mar 20, 2014 12:58

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

i mean actual games, not fart apps and angry birds knockoff #2957

# ¿ Mar 20, 2014 14:02

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

# ¿ Mar 25, 2014 11:59

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Mr SuperAwesome posted:

bonus points if u can figure out wtf is going on in these functs, double bonus points if you can guess how it relates to crypto

bitcoins

# ¿ Mar 29, 2014 19:02

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

everything you bought on aliexpress is guaranteed fake - especially if it was the SCRs

# ¿ Mar 29, 2014 22:55

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

power botton posted:

brewing beer is like repairing your own manual car. like yeah its useful i guess but these days i can just pay someone to do it for me and itll be much more reliable.

you're one of those people who thinks paying someone to change a light bulb is something to brag about aren't you

# ¿ Mar 30, 2014 15:44

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

N.Z.'s Champion posted:

thanks
code:
t is is really  
yeah that seems to be the main problem. filters that just discard characters, and each site has its own filter.

18 (well there are a few more in the spec but that's all this uses).

there's no reason why it couldn't hide files in an email too (if the text was sufficiently long) so i might do that next. i'm going to be emailing the works of shakespeare (aka dick pics) to a lot of people.

with email couldn't you just stick the uuencoded file in a non-standard header?

# ¿ Apr 5, 2014 21:44

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

computer toucher posted:

3D sucks because all 3d films are poo poo and they think gimmicky scenes throwing things out of the screen at you is a substitute for a plot

# ¿ Apr 22, 2014 11:21

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

echinopsis posted:

http://www.ebay.com/itm/200958985606?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

i got one of those but i dont know what the clip/adapter things are called that conenct into it so i dont even know what to search for. tryin to avoid soldering directly tob bvoard

can ne1 helpo

they look like JST PH connectors.

# ¿ Apr 26, 2014 22:44

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Sagebrush posted:

seriously. while shilling for arduino at the maker faire i actually encountered a guy who started ranting about "well this is good for CHILDREN *smorgkt* but you know, most people are just blinking an LED, they should get a 555, it's so much more efficient" and so on

i pointed out to him that a 555 costs about 90 cents, and an attiny85 costs $1.15, so to blink the led he could get himself the 555 and the resistors and capacitors to make it bistable and do the math to work out the blink rate, and it will be good and blink the led. then i'll pay the extra quarter and use my ~arduino~ to program the attiny and be able to not only blink the led with no external components, but blink it at an infinitely variable rate controlled entirely through software, and also have four 10-bit ADCs and two independent PWM timers and external interrupts and some nonvolatile EEPROM and read from digital sensors and talk to motors and speakers and radios and have the ability to do goddamn serial communication or I2C or SPI

he kind of was like "well, yeah! yeah! yeah! i know! i know! that's all true, but" and i sorta zoned out and went to show a little kid how to make an automatic night light. he made it work from zero, a blank document and a pile of electronic parts, in under 10 minutes. again, welcome to the future

i thought most people's beef with the arduino crowd was because of the endless stream of 10,000 word blog posts they churn out about "hey check it out i made an LED flash using only a $35 microcontroller board and some code someone else wrote!"?

# ¿ Jul 3, 2014 11:29

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

Luigi Thirty posted:

another that increments between one of multiple outputs on each pulse (i don't know what this is called)

decade counter?

# ¿ Jul 3, 2014 18:53

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# ¿ Sep 12, 2024 03:29

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

ol qwerty bastard posted:

maybe i'll include an arduino and some blinking LEDs

no, you need one arduino per fan, and an ethernet shield for each so that they can communicat with another arduino that blinks the LED

# ¿ Jul 3, 2014 19:04

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > YOSPOS > Post your idiot spare time projects. i'm the subtle buttocks

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