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BiohazrD posted:calling rigol "badass serious equipment" is a bit of a stretch. theyre $300-400 dollar made in china scopes (with easily bypassed software licensing). they're great for what they are and what they cost, but its definitely hobby equipment in fact "riglol" refers to the "easily bypassed software licensing"
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# ? Apr 10, 2017 14:59 |
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# ? Mar 28, 2024 17:33 |
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BiohazrD posted:calling rigol "badass serious equipment" is a bit of a stretch. theyre $300-400 dollar made in china scopes (with easily bypassed software licensing). they're great for what they are and what they cost, but its definitely hobby equipment don't harsh on my scope
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# ? Apr 10, 2017 17:33 |
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Sagebrush posted:don't harsh on my scope hey now my garage scope is a riglol, i aint hatin
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# ? Apr 10, 2017 18:38 |
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To answer the question, that should work. What's the application?
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# ? Apr 10, 2017 18:47 |
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unpacked robinhood posted:this is an optoisolator, 5 goes to a pullup pin inside another device. wouldnt you want the resistor between 4 and 6 and GND so you dont try to source too much current from your pull up on pin 5
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# ? Apr 10, 2017 18:55 |
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BiohazrD posted:wouldnt you want the resistor between 4 and 6 and GND so you dont try to source too much current from your pull up on pin 5 more like this ? muckswirler posted:To answer the question, that should work. What's the application? presumably my car radio can be controlled via a single wire in a pullup configuration that goes out the back, by pulling to gnd with the appropriate timing. so 5 would go to the radio and would be used from time to time to transmit a code an attiny flashes the led on the other side
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# ? Apr 10, 2017 19:40 |
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I finally got around to building My First Electronic Thing: a gift for my friend: an analog gauge for the bar he works at which indicates how hot he's coming in that day - he receives a text the days he's working, he replies and it displays the result (which decays over several hours). I used a Particle Photon because I value the ability to remotely fix things in a low-effort manner above pretty much all else and I'm fairly happy so far. Since I'm not some scrub who's going to tape a breadboard inside of a project box, what's the YOSPOS-approved PCB layout app?
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# ? Apr 11, 2017 06:39 |
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kicad. it's relatively good. all pcb CAD apps suck though. depending on how complex it is i might suggest just a chunk of protoboard. you can get a pack of 20 various sizes for like 5 bucks on ebay
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# ? Apr 11, 2017 08:06 |
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I've only ever used Eagle, so that's what I'm gonna recommend. Also, is there any pro app that Autodesk won't buy?
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# ? Apr 11, 2017 14:06 |
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i'm starting to get into DipTrace and it's fairly dope. the package editor or whatever is good. i absolutely hate spending time working on library stuff in eagle tho so ymmv.
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# ? Apr 11, 2017 17:41 |
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install diptrace
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# ? Apr 11, 2017 17:42 |
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doesn't diptrace cost money? no i am not going to google this. i'm far too lazy
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# ? Apr 11, 2017 19:20 |
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it costs money in the way that vmware costs money
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# ? Apr 11, 2017 19:39 |
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Luigi Thirty posted:it costs money in the way that vmware costs money "I want to run a vm on my workstation" VMware or "what am I supposed to do with these bladecenters" VMware?
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# ? Apr 11, 2017 20:47 |
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i've been thinking of trying diptrace out the pin no. limitation in the standard version, is that the total number of device pins in a design or is it just the largest package size? might be a bit limiting but i think most of my boards could fit in the freeware version other issue for me with the free version is only 2 routing layers; i assume they let you put in a power+ground plane for 4 layer board? can you shape route the power plane in that case? most of the time when i do 4 layer on the OSHpark stackup i do a ground plane nearest to the signal traces and then i shape route the various power supply rails on the other int layer. sometimes i need a bit of extra ground fill there too if high speed stuff has to go on the bottom layer for a bit, it would be pretty limiting if that wasn't an option.
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# ? Apr 11, 2017 21:31 |
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the pin number limitation is total pin count. my tpa3251 board posted earlier is right under the limit 2 routing layers, but you can have planes, so you can do four layer boards. i believe you can shape route the planes although i haven't tried also, the restrictions in general are not super robustly implemented. i've accidentally wound up with >300 pin boards in the free version that were still routable and modifiable and stuff. no idea how
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# ? Apr 11, 2017 22:03 |
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i just gave it a shot just doodling an op amp circuit will probably take some getting used to and a bit of configuration to set it up right, doesn't seem too bad on the schematic side. minor details is multi part symbols seem to be somewhat inflexible compared to more expensive software? in cadence software multi part ICs are referenced based on a letter indicator so if you want to swap some elements for routing you just swap those and the pin numbers/schematic symbol updates automatically. proteus even has a function that will auto-swap gate elements to reduce routing complexity, but that's kind of an oddball feature (that i suspect has been there since the days of 74 series computer boards). library management seemed to be pretty mediocre; i'm used to a searchable component database (parametric and free text) which i couldn't really find except for a basic filter. i guess there's a reason there are companies dedicated to component library+symbol management. couldn't find any shortcuts/special handling of ground/power symbols, do i really have to go to a specific library or use manual net aliases to place a ground symbol? pcb layout seemed fine, but i have to wonder what kind of mad men decided to make top and bottom routing the same colours instead of the standard red/blue, come on (even the weirdo green/yellow would be better than same colour). the graphics aren't as nice as newer allegro versions or proteus (both do extra transparency and border effects on planes to provide more visual distinction). seemed like when i placed my ground fill it shows up as the same colour as any traces i pull and doesn't update in real time, so if i route over a plane it throws DRC errors along the entire trace, which is invisible since it's the same colour as the fill. if there's no way to make it do real time shape updating that's pretty much useless unless you remove the entire fill every time you do any routing on that layer.
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# ? Apr 11, 2017 22:42 |
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i plop down the ground symbol from the symbols library (or w/e its called) then just copy-paste it around it is definitely not a replacement for the enterprise grade tools but its pdeece as an eagle alternative imo
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# ? Apr 11, 2017 22:44 |
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I like Eagle a lot. I tried kicad for a bit once but I couldn't get used to the quirks like I have with eagle. diptrace gets recommended a lot but I find it frustrating.
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# ? Apr 11, 2017 23:30 |
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unpacked robinhood posted:
Don't connect pin 6 at all. It's there for high speed applications.
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# ? Apr 13, 2017 06:26 |
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i've continued hacking on the gta:sa script vm, and got some pretty powerful tools built for it first up, there's the script injector and reloader. it acts like the ruby `guard` program and monitors a directory of script files. when you save a script from your editor, it compiles the script and injects or reloads it. by keeping the symbol list from earlier compiles, it's able to patch the old code's jumps to point to the new code, retaining local variable values. below i'm editing the script to change the text colour from red to green, but the `counter` local variable retains it's value by patching the running code to jump to the updated code next up is the "JIT compiler" (not entirely sure if it meets the standard definition of it). using a small host script injected into the game vm, it's able to evaluate injected instructions and provide return values. using ruby's `method_missing` i made an opcode proxy object that can directly call vm opcode functions from native ruby code: finally, i patched the ui framework i was using to achieve higher framerates, and made this giant monstrosity of a visual debugger for it. it uses some of the exotic console input modes to get scroll/cursor support, and has an interactive ruby console hooked up to the opcode proxy available:
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# ? Apr 14, 2017 03:59 |
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as someone whose programming experience is almost exclusively with embedded microcontrollers and other small physical devices, the scope of something like that is just mind-boggling. the concept of hooking into someone else's running code and interacting with it in real time is total *10000000
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# ? Apr 14, 2017 04:09 |
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Angela Merkle Tree posted:i've continued hacking on the gta:sa script vm, and got some pretty powerful tools built for it this is the most insane thing I've ever seen
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# ? Apr 14, 2017 04:27 |
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BiohazrD posted:this is the most insane thing I've ever seen
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# ? Apr 14, 2017 04:32 |
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Angela Merkle Tree posted:i've continued hacking on the gta:sa script vm, and got some pretty powerful tools built for it [unreal_tournament_holy_shit.wav]
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# ? Apr 14, 2017 08:04 |
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Angela Merkle Tree posted:i've continued hacking on the gta:sa script vm, and got some pretty powerful tools built for it
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# ? Apr 14, 2017 22:01 |
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Is your code posted online? I'd love to peek at it, despite knowing basically no ruby.
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# ? Apr 15, 2017 00:51 |
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I'm going to basically echo the other poster and say as a person who has never done software more complex than myself, the scope of what you're doing is amazing to me.
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# ? Apr 15, 2017 03:17 |
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I posted in the wrong place. oops.
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# ? Apr 15, 2017 03:39 |
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from a code point of view, is gta quite an achievement or
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# ? Apr 15, 2017 03:57 |
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Angela Merkle Tree posted:i've continued hacking on the gta:sa script vm, and got some pretty powerful tools built for it very nice!
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# ? Apr 15, 2017 04:23 |
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the gta thingy is way cool
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# ? Apr 15, 2017 04:54 |
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thanks for the responses, i'm really proud of what it's capable of now. it's been a great learning experience since i don't really have much familiarity with compilers or low-level programming before this.meatpotato posted:Is your code posted online? I'd love to peek at it, despite knowing basically no ruby. currently only works with the osx steam version of san andreas, but if you've got a recent version of ruby and bundler installed, you should be able to clone it, `bundle install`, and start using the example scripts in /bin the key files are: process.rb - attaches to the game process and read/writes the script vm structures repl.rb - sets up the interactive ruby environment and injects code to evaluate into the game ruby_to_scm_compiler.rb - a horrible travesty of a s-expression transformer, turning ruby expressions into assembly tokens assembler.rb - assembles binary scripts from tokens echinopsis posted:from a code point of view, is gta quite an achievement or Sagebrush posted:as someone whose programming experience is almost exclusively with embedded microcontrollers and other small physical devices, the scope of something like that is just mind-boggling. the concept of hooking into someone else's running code and interacting with it in real time is total *10000000 the real secret sauce is generating and caching the symbol lists from the compiler, so you know where your jumps are to patch them later. having a disassembler that can read from live memory helps heaps to debug this.
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# ? Apr 15, 2017 11:01 |
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i'm not sure I'm smart enough to even play the game e Stack Machine posted:Don't connect pin 6 at all. It's there for high speed applications. Thanks unpacked robinhood fucked around with this message at 12:44 on Apr 15, 2017 |
# ? Apr 15, 2017 12:42 |
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i'm doing important research on spherical coordinate functions
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# ? Apr 16, 2017 00:14 |
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now turn it into a poop emoji
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# ? Apr 16, 2017 01:27 |
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peepsalot posted:i'm doing important research on spherical coordinate functions got a colleague with similar last name who should love this
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# ? Apr 16, 2017 15:04 |
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it doesn't look like much but there's a lot going on under the hood i've been working on here i figured out how to set the 4-color and 16-color palettes, i've got an array of 16 software-controlled motion objects hooked up, i've figured out how to make my own graphics and encode them into ROM, and every time the little block hits a wall it sends command $01 to the sound CPU (which doesn't do anything yet but count how many $01s it's received so I can make sure it's working right) the good news is the sound CPU is a 6502 so I know how to program it. the bad news is I don't know how to program the POKEY, YM2151, or TMS5220 lol
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# ? Apr 18, 2017 23:59 |
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ah there we go. speech https://www.youtube.com/watch?v=2J6GeoQ0LMU
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# ? Apr 20, 2017 03:37 |
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# ? Mar 28, 2024 17:33 |
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it is not saying "219 yospos bitch", voted 1
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# ? Apr 20, 2017 04:51 |