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hello nerds i posted this a while ago in the piano/keyboard thread but i am not very smart and this is probably the thread i should have posted it in. so here's a copy/paste: I'm trying to figure out if i can fix my old keyboard. I don't have money to buy a new one at the moment, so it would be awesome if I can get this thing working again. In the 90s I got a Yamaha PSR-530 keyboard. I pulled it out of the closet a few days ago and discovered that it does not want to stay powered on any more. I figured out that it is possible, if you connect the DC cord to the keyboard and then wiggle/hold it juuust right, the keyboard will stay on. But if you then let go of the cord (and thus are no longer bending it juuust right) it will go dead. I found the service manual online (and it's actually really cool, with dual JP/EN text, real schematics, etc) and figured out how to take the thing apart. I got it apart and extracted the circuit board that manages the DC-in duties. The board itself says that it is "XT-033", although in the service manual there are some alternate/additional codes used for it. This is what the board looks like on the side with the components, facing as if you had cut away the plastic around it when the keyboard is fully assembled:  The big red arrow points to the DC-in port, which on the PCB is labeled "JK101". Also here is the other side of the PCB:  The part I've made a sort of dotted-line box around is where the solder points are for the DC-in port. You might see some stuff that looks like it might be liquid on some of the points there, but I dabbed a cotton swab there and nothing came off so it appears to be solid (and similar in color to the other yellow/brown stuff near other solder points on the board). I'm not much of a solderer but the job here looks generally good. the only thing i saw was that there may be a small bit of solder or wire that got broken off here:  This corresponds to this little wire on the side of the board with the components, which appears to be connected (directly or indirectly) to the DC-in bit:  Is this my problem? Is it not? Should I try and find a replacement board? Any insights or suggestions are appreciated.
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May 11, 2018 00:33
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Yeah, so if I hold the board with one hand use the other hand to wiggle the plastic rectangle bit with the DC port, that glob of solder definitely moves up and down and detaches from the lower-right corner of what was obviously supposed to be an entire single bit of solder. I haven't soldered anything since my technology class in junior high. How hard is this job? I'm not super confident in my abilities here, mainly because the other big glob of solder to the right of the one in question is so close to it.
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May 11, 2018 01:15
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dominos had a chatbot you could order from the last time i looked at their site
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May 21, 2018 05:43
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why computers hard. why not same tools all computers?? 
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Jun 16, 2018 20:03
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netwerk23 posted:The more I look into the Tablo the more I like it. Tablo, 2 tuners ($177), external drive for recording (8TB, $160), plays via an app on a Roku ($40) and a yearly subscription for EPG ($50). Also includes remote streaming too. i think it's even possible to build an OTA DVR with a raspberry pi. it wouldn't give you the other benefits, but you'd get Jeopardy recordings. it might be cheaper/simpler too
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Jun 27, 2018 22:21
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Wheany posted:here's a idiot spare time project idea for someone (not it!): kind of unrelated but someone made a "sequel" to the Yo Noid video game with graphics straight out of a PSX/N64. yes, the pizza mascot video game https://dustinbragg.itch.io/yo-noid-was-ahead-of-its-time
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Jul 9, 2018 00:51
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ol qwerty bastard posted:sup thread, long time no post. me and a buddy have been working on a little project for a wearable device that can detect if the user falls and then if they are nonresponsive it will automatically call 911. it's basically just an Arduino plus an accelerometer and a GSM module for connecting to the cell network but it's been fun and interesting putting it together. what? no! you have a legit device. i know some older people who have these "help i've fallen" devices. they are bad. really bad. one guy i know was recently complaining to me about how he had accidentally triggered the call function on his help device three times, and he'd only had it for two weeks. they are basement level in terms of true real-world functionality and usability what you need to do is some market research and figure out which devices are available on medicare/medicaid. most of these are super bad. but also, many many of the people relying on these insurance programs also don't have the $$$ or desire for an iphone/iwatch combo. make a decent product that can be covered under public or old-people insurance programs and you are doing good in the world. also some $$$ for you
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Sep 13, 2018 05:24
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Sagebrush posted:the green coating on the board is called solder mask and will tend to reject solder, so as long as you don't add a ton of extra so that it spills over onto the next pad you should be fine. those look like relatively large pads and traces so it's not that challenging. Jonny 290 posted:you can probably just reflow that maybe adding a dab of solder and itll be fine for another 10 years. Oh hey look I'm quoting this five months later. Anyway, I think I'm gonna try and actually do this. I don't have any equipment nor do I have any kind of proper ventilation facilities. However I do have eye protection, rated PPE for my mouf, and a garage. If I get a cheap babby soldering kit, will I be good to go? This keyboard is from the 90s and has many "CONTAINS LEAD" warnings all over the inside of it. Also, if I'm going to go the "insulated wire connection" route, what kind of wire and solder should I be looking for? And if I'm going to just try and re-flow it, will I need any extra solder, or will it just involve heating up the existing stuff.
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Oct 12, 2018 01:14
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MisterOblivious posted:are you on discord or something? i don't have pms on sa. I will try and find you on Discord 
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Oct 13, 2018 01:21
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those types of patterns are known in geometry as "tessellations"  https://en.m.wikipedia.org/wiki/Tessellation
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Oct 22, 2018 18:12
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unpacked robinhood posted:I've spent the day making a thingy to read my bookmarked threads on my kobo: i have used awful.apk for this purpose for years. it has settings to disable all images and whatnot when you're not on wifi. really good for discussion and chat threads. sometimes i have opened the cell data usage screen on my phone and awful is at just a few hundred kB for the month
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Jan 9, 2019 04:17
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imagine four balls on the edge of a stack
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Jan 9, 2019 22:05
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Corla Plankun posted:is there a word or phrase for this kind of design? its sorta like geodesics but with cool new constraints and i wanna know more well, that one there is one of the platonic solids when folded into "dice" configuration https://en.wikipedia.org/wiki/Platonic_solid
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Jan 24, 2019 02:17
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are there any threads on these here forums for GIS? i think it would be a fun hobby to make pretty maps out of census data
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Jan 29, 2019 22:07
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spankmeister posted:Absolutely, it just flips a relay in the meter. the "smart" water meter in my house has a battery rated for 20 years of use, and also a 900 mhz transmitter that i think the city can read passively without having to send anyone out.
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Mar 20, 2019 20:34
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pseudorandom posted:One of the projects I was considering trying was to try reading my meter with an SDR. Though, I first need to figure out if I actually have a smart meter first. the way i figured it out was i just started googling anything written on the meter that looked like it might be a model number. the manufacturer's public website wasn't super helpful but eventually i found the website of some city that has installed the exact same product revision that i have, and they had posted a PDF from the manufacturer with a lot more technical info
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Mar 21, 2019 17:19
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did u just doxx somebody's posting station?? rude
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Apr 2, 2019 01:41
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it would be fun to collect the data for a massive HIPAA lawsuit tho
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Apr 2, 2019 06:45
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a few public libraries around here have 3D printers and i think that it kicks major rear end. i believe some of them don't even cost money to use, you just need your library card
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Apr 8, 2019 20:31
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the online card catalog systems that libraries have now are really good for spare time projects. i can search my entire metro area's library systems and get a book for pretty much any DIY job in a couple of days
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Apr 9, 2019 22:32
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we started planning the wedding, because you apparently have to plan half that crap a year in advance around here, and i think it would be fun to create something in the vein of an ARG for the day. even if it was just kind of hokey biographical stuff about the two of us, it would be kinda neat for our guests to have little activities they could do on their phone throughout the day this would require me learning like uh javascript and poo poo tho so  lol
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May 6, 2019 21:52
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hi
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May 8, 2019 01:02
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eschaton posted:this is a grossly terrible analogy remember how you have always refused to EVER respond to any and all posters who point out that iOS dev hardware (plus Apple developer account) costs more than the entire yearly income of billions of the poorest humans? but do go on, im sure your API wankery is relevant to these folks who your employer could single handedly lift out of poverty with their excess profits
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May 15, 2019 06:04
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that's awesome. consoles have some neat hardware built into them
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Jun 10, 2019 23:00
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aw no way, the "motion object manager" is your microcode?? that rules i tried learning some homebrew NDS programming years back, and i thought it was pretty neat because the hardware (or firmware?) has dedicated logic for sprite storage and display (iirc this is called the "OAM"). that's what i was remembering
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Jun 12, 2019 03:30
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ah yeah, now i'm remembering how n64 worked. nintendo was so paranoid about secrets that they basically shot themselves in the foot when they could have been allowing developers to build up cool graphics microcode. it would have been so cool to see what studios with big $$ in dev money could have come up with for the hardware it's super neat that you, forums poster luigi, are able to mess around with it now
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Jun 12, 2019 04:21
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i know a ton of nearly-useless factoids about Linux distros back from when i was a teenager and thought i was super cool to not using mikro$haft or crapple  and yes keyboard mappings are hilarious and dumb if you mess them up Lutha Mahtin fucked around with this message at 21:18 on Jul 5, 2019 |
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Jul 5, 2019 21:15
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/etc/hosts
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Jul 6, 2019 05:47
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Bitch-Monkey posted:I've built myself a Twitter bot that creates inspirational posters from Pornhub comments. why is there a painting of mike pence holding his knees back to his chest so he can fart extra hard into a pool
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Aug 4, 2019 05:52
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moron izzard posted:Did another Flugtag https://twitter.com/ZapfLOL/status/1170409801622290432 i almost made it out for the show, but didn't. i did make it the last time it was in StP tho. congrats on falling into our gross river
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Sep 10, 2019 06:05
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post your idiot fuligin projects
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Oct 23, 2019 02:50
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AtomD posted:over the past couple of months ive persitently made the dumb decision of using a daw instead of learning notation software if you're posting in the funy computer forum you definitely have the aptitude to learn LilyPond. it's pretty easy to learn the basics and just start crankin' out notes in your favorite text editor. i do not know if it is good for your compositions or if it works with your daw tho i liked a lot of the sections of the song too. if i had to describe the style i would go with "philip glass film score"
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Nov 13, 2019 23:19
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idiot project idea: has anyone ever made a VR version of groverhaus?
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Nov 13, 2019 23:40
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AtomD posted:i haven't even heard of this tbh. gonna have a look at it Lilypond was started by some people who sat down one day and looked at the available music engraving programs, and decided that all the existing ones produced ugly sheet music, and that they should build one that output nice looking sheet music. In doing this they invented what is basically a text markup format for notating music, which is the part you might find useful. I know that some other score-writing programs support Lilypond files, but I don't know if any DAWs have like a simple "import from lilypond file" feature. It comes out of the Unix/TeX worlds, so you can probably find something that would convert Lilypond files to MIDI or whatever other format your DAW supports. e: there are also several other music markup languages out there. one of them was even created by the w3c https://en.wikipedia.org/wiki/Category:Music_notation_file_formats
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Nov 14, 2019 21:22
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Lutha Mahtin posted:idiot project idea: has anyone ever made a VR version of groverhaus?  e: it took a lot of math and internet detective work just to get to create this yellow piece of poo poo box
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Nov 23, 2019 18:49
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someone also created a full 3d printer model that includes all the internal walls and furniture. i am using some of the pictures that that person dug up but im gonna reverse engineer my own model instead of copying their work directly https://www.thingiverse.com/thing:3924308
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Nov 26, 2019 16:07
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Pile Of Garbage posted:NICE yeah the mod maker is the same person who made the 3D printer model. they have a neat Twitter thread about the haus that has a lot of construction and interior pictures i had never seen until just a couple days ago https://twitter.com/BoldlyBuilding2/status/1197999531671130112
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Nov 27, 2019 01:41
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alexandriao posted:Does anyone have the original thread link for Groverhaus? (haus? house?). supposedly it's this one. i don't have archives so I'm not totally sure http://forums.somethingawful.com/showthread.php?threadid=2253640
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Nov 28, 2019 16:30
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Luigi Thirty posted:Someone on twitter offered to send me their PS2 dev kit on loan so I might start writing some PS2 software cubes cubes cubes cubes cubes cubes CUBES CUBES CUBES
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Dec 4, 2019 04:14
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even the ps4 has a weird master/drone setup. it had a whole ARM system to run the dashboard OS and then it drives the ATI CPU/GPU for the heavy lifting, or something like that
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Dec 4, 2019 17:58
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