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Luigi Thirty posted:I've been playing with the Sierra SCI engine while I wait for all my computer poo poo to arrive to Chicago. I got it to draw transformed polygons. Why does it look like LCARS?
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Jan 13, 2019 20:21
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Schadenboner posted:Why does it look like LCARS? 
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Jan 13, 2019 22:02
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Schadenboner posted:Why does it look like LCARS? why the hell not
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Jan 13, 2019 23:20
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why shouldn't it
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Jan 14, 2019 07:05
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https://twitter.com/LuigiThirty/status/1085083024197386241
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Jan 15, 2019 08:56
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alright instead of cluttering up the pics thread more with this ima move my dodecahedron gripper thingy project here managed to simplify the linkages by using ball joints; i'm hoping they'll print acceptably https://www.youtube.com/watch?v=CWTD80etZ0U also all the parts have been set to the correct size using Math(TM)
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Jan 23, 2019 02:19
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send it to me when you get it completed, tia. i want to print one i started to model one when i saw that video too but i only got this far 
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Jan 23, 2019 02:28
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cheers, will do. i still need to redesign the middle linkage a bit since there's some interference when everything is completely open, and then figure out how to mount a servo to rotate it
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Jan 23, 2019 02:38
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 added a base with a spot for a micro servo, the gear ratio is 1:5 so as it turns 180 degrees the ring will rotate the required 36 degrees. gonna export to STL and upload next i think i may have made it slightly too large to fit on my printer which is annoying e: and what it looks lik eopen 
ol qwerty bastard fucked around with this message at 05:32 on Jan 23, 2019 |
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Jan 23, 2019 05:29
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That's beautiful, I want to make one. Or almost as good, see the results of someone else make one. The models and simulations are great but they are basically fantasies, and like every budding serial killer knows sooner or later fantasizing just doesn't cut it any more.
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Jan 23, 2019 05:57
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well you're in luck because i've just uploaded all the part files to thingiverse: https://www.thingiverse.com/thing:3375148
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Jan 23, 2019 06:05
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looks awesome. can you upload the solidworks files too? or STEPs might be better for compatibility.
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Jan 23, 2019 09:09
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Sagebrush posted:send it to me when you get it completed, tia. i want to print one I initially thought you were modeling a mechanism for creating a very precise implosion it made me wonder when Lowtax would get a visit
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Jan 23, 2019 12:10
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yeah when i get home i'll upload the SolidWorks files as long as you promise not to judge me for my haphazard modeling methods i printed off the rotating ring piece last night (i checked and everything does fit on my printer) and the bottom hexagon is currently printing
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Jan 23, 2019 15:51
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I have to admit most of those parts make me scratch my head about how to orient and print them, but I guess if it was easy then everyone would want to do it.
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Jan 23, 2019 23:55
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it's probably dumb but i keep thinking about that design as used for high-surface-area solar panel deployment probably better shapes and systems though, i'm no space expert like musk
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Jan 23, 2019 23:58
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first few parts are off the printer and they fit together pretty decently after a bit of work with sandpaper and files  i printed them at i think like .08 mm layer height or something like that? you could probably get away with a coarser print though here's the solidworks files as promised: https://www.dropbox.com/s/k3kprqnqbc4bpah/BALL_JOINT_ASSY.zip?dl=0 (ignore the fact that i accidentally named one of the parts a hexagon)
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Jan 24, 2019 01:48
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ol qwerty bastard 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
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Jan 24, 2019 01:52
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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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e: just gonna make a thread
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Jan 24, 2019 02:37
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I've been making a plate reverb and I finally got it making noise. My recording setup has some buzzing and stuff in it, and I'm sure I could get some better sounds with some pre-amps for the contact mics. this is just a korg volca beats kick and snare running through it https://soundcloud.com/void-star-1/big-plate-beat
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Jan 24, 2019 18:50
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holy poo poo yes what's your plate material?
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Jan 24, 2019 19:05
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Jonny 290 posted:holy poo poo yes It's just a piece of galvanized sheet metal from home depot. I went through their little hopper and wiggled them around until one had a nice ring to it. It's probably a little too thick, I might go over it with a sander.
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Jan 24, 2019 19:52
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that's really cool
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Jan 24, 2019 21:05
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Zaxxon posted:It's just a piece of galvanized sheet metal from home depot. I went through their little hopper and wiggled them around until one had a nice ring to it. It's probably a little too thick, I might go over it with a sander. saw a recent youtube tutorial on building a plate reverb and i've been tempted myself
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Jan 24, 2019 21:14
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Trig Discipline posted:saw a recent youtube tutorial on building a plate reverb and i've been tempted myself we probably saw the same thing. The "Ikea hack" one? I'd say go for it. It wasn't that hard and it was pretty cheap, but I have a pretty stocked garage workshop and all the wood I used was from scraps from other stuff. The toughest part was getting the plate held under tension, at first I put some hex bolts through with a little hole in the bottom to attach a spring, but the plate was too heavy for any of the springs I could get that were small enough to fit, I tried cutting and uncoiling some bigger springs but that was a huge pain in the rear end and still not strong enough, so I decided to do eye bolts and s-hooks, but the eye bolts were too big to get any serious tension. So I eventually took 2 of the old hex nuts, cut the heads off them, drilled the holes bigger to fit the hooks, and tensioned them with a nut on the outside of the frame. If I make another one I'm just gonna make the frame bigger and use eye bolts, or maybe just buy a big threaded rod and cut and drill sections of it. All in all I think I spent about $110, around $25 for the plate, about $40 for the electronics, and $45 for the hardware, but that includes a bunch of excess bolts and springs.
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Jan 24, 2019 21:30
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DONT THREAD ON ME posted:e: just gonna make a thread link the thread?
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Jan 24, 2019 21:34
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eschaton posted:link the thread? i made a low effort post for something i think is actually worth putting some effort into. i'm going to do some actual effort before reposting.
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Jan 24, 2019 21:54
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Zaxxon posted:we probably saw the same thing. The "Ikea hack" one? I'd say go for it. It wasn't that hard and it was pretty cheap, but I have a pretty stocked garage workshop and all the wood I used was from scraps from other stuff. that’s the one! it looked quite manageable but gently caress me if I need another project right now maybe one of these days
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Jan 24, 2019 22:43
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c istp s: getting things lined up for the 290twitch. picked up logitech c920 * 2, a big boom to mount one of them on, and a nice audio technica lav mic yesterday the idea is to have one conventional camera, one mobile that i can point at either the solder bench or any radio in the shack, and then feed in video from the radio computer too going in a bit to pick up a USB mixer for proper audio input. i'll be able to route any radio crackles i want into the feed, or just have me talking oh and i gotta bootcamp and win10 the rmbp that im using for the stream box b/c slobs doesnt exist for os x yet. preliminary test with vanilla OBS on OS X shows about 40% cpu when streaming/recording, so it should have enough beef
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Jan 26, 2019 20:42
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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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Lutha Mahtin posted: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 I don't know about threads, but I've done pretty well with maps and shapefiles to graph some election results using the GeoTools Open Source Java GIS Toolkit: http://geotools.org/
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Jan 29, 2019 22:47
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i do a lot of gis stuff for my work but it's all in R
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Jan 29, 2019 23:39
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Lutha Mahtin posted: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 call the thread "Geospatial Information System are Pieces Of poo poo" or something
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Jan 30, 2019 00:22
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Lutha Mahtin posted: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 there's a careers in gis thread in bfc
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Jan 30, 2019 01:07
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Midjack posted:there's a careers in gis thread in bfc that's archived tho
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Jan 30, 2019 01:08
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Lutha Mahtin posted: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 i used to work in GIS stuff, the tools we used was QGIS and a bunch of CSV files. for making pretty maps i think i would just start with Python scripts to generate the CSV and then make it pretty in QGIS. for something more advanced, probably GeoTools or the OpenLayers javascript library
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Jan 30, 2019 06:21
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 full motion video, the latest in computer entertainment. it's 24hz 480x272 running on a Cortex M4. i could play the entire movie if i bothered to encode it. not shown but you can seek through the video using the PS4 touchpad the colour is perfectly accurate in real life but looks extremely blue when recorded on my crappy phone camera. although i did have to colour correct the image for the LCD screen anyway, the blue level of the LCD is more than 200% of normal and looks like rear end otherwise
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Jan 30, 2019 12:57
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when you don't know kung fu
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Jan 30, 2019 12:59
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a little on how it works, since i like reading about these things maybe you will too! the movie is dumped to raw pixels using ffmpeg, and then i encode it into a format that's simple enough to practically use on a microcontroller. each 480x272 frame has its own 256 colour palette and each pixel is one byte that indexes into it, a bit like a GIF with no compression. this is then written to an SD card. the video data is streamed onto off-chip SDRAM via DMA from the SD card controller. the drivers for the DMA and SDC were so bad i had to rewrite them from the barely-documented hardware specs - all SD operations were blocking, which is terribad because there can be hundreds of milliseconds of latency at random intervals. smooth video is impossible under those conditions. on each vsync interrupt from the lcd controller i start rendering a new frame. the palette is loaded first and then the inner loop loads 96 pixels at a time: the byte sized pixels are loaded into CPU registers, unpacked, their colour is looked up and they're written into the video buffer. the palette is loaded into fast single-cycle on-chip SRAM because SDRAM has very poor random access performance - when you consider that the indirect palette lookup runs 130,000 times per frame it really adds up. once all the pixels are blitted the double buffering pointers are swapped and the cycle repeats. i wrote the video blitter in assembly and it cranks out a frame in 2ms, leaving lots of time to do other things besides drawing the video. it was an interesting optimisation exercise and is about five times faster than the C equivalent.
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Jan 30, 2019 14:14
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