[{"data":1,"prerenderedAt":491},["ShallowReactive",2],{"project-21134903":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":10,"maker":11,"posted_at":12,"year":13,"points":14,"comments":15,"rank_in_year":16,"shown_in_year":17,"top":18,"tier":19,"category":20,"subcategory":21,"format":22,"keywords":23,"reception":28,"sentiment":29,"stance_mix":30,"scored_comments":35,"aspects":36,"strip":44,"post_text":47,"what":48,"said":85,"maker_in_thread":207,"shape":219,"grid":223,"attempts":452,"same_week":453,"maker_shows":344,"maker_hidden":482,"reader_version":483,"card":484},"21134903","Ledonardo","I have to say, I really love the comments here, I post something I made and everyone chimes in with a bunch of interesting projects either they or someone else has made, or new…","maker","Show HN: Ledonardo, my light painting hardware project","https:\u002F\u002Fwww.stavros.io\u002Fposts\u002Fbehold-ledonardo\u002F?","stavros.io","StavrosK",1570011901,2019,442,91,41,2195,2,"legend","creative","light painting hardware","hardware",[24,25,26,27],"light painting","long exposure","led strip","photography","loved",0.599,{"positive":31,"neutral":32,"mixed":33,"critical":34},25,15,4,0,44,{"idea":37,"execution":39,"performance":41,"docs":43},{"positive":38,"critical":34},8,{"positive":40,"critical":34},7,{"positive":42,"critical":34},1,{"positive":18,"critical":34},[45,34,46,46,45,45,45,45,46,46,46,46,45,34,46,45,46,45,45,46,45,45,46,45,46,34,46,46,45,45,46,34,45,46,46,46,46,46,46,46],3,5,null,{"problem":47,"audience":47,"pricing":47,"motivation":49,"time_to_build":47,"stack":61,"openness":82,"stage":83,"team_size":84},{"value":50,"source":51,"evidence":52},"Fun project combining technology, photography and art","inferred",[53,57],{"id":54,"by":55,"text":56},"21135346","NKosmatos","Nice one Stavro!!! It's been some time since your last side-project, but this one is just great. Perfect bridge of technology, photography and art. Do you plan to share the code…",{"id":58,"by":59,"text":60},"21138165","defined","Great article, and I love the blend of art and technology. You are so often doing projects that involve visual, physical, and conceptual creativity; sort of concretizing the…",[62,68,72,76],{"value":63,"source":7,"evidence":64},"WeMos D1 mini (ESP8266)",[65],{"id":66,"by":11,"text":67},"21135431","It has, yes (at least the ones I posted). I can definitely open source the code if there's interest, I didn't initially just because there's a password committed in the firmware.…",{"value":69,"source":7,"evidence":70},"MicroSD shield",[71],{"id":66,"by":11,"text":67},{"value":73,"source":7,"evidence":74},"Two 18650 batteries",[75],{"id":66,"by":11,"text":67},{"value":77,"source":51,"evidence":78},"MicroPython-style LED library",[79],{"id":80,"by":11,"text":81},"21156131","Oh, that's just this: ``` self._np.buf = column self._np.write() ``` Where column is a list of RGB (or RBG) pixel values like [128, 255, 0, 255, 0, 0, 128, 15, 200].","unknown","launched","solo",{"praise":86,"objections":126,"requests":152,"questions":168,"alternatives":187},[87,103,111],{"value":88,"source":89,"evidence":90},"Impressive light painting results and photos","commenter",[91,95,99],{"id":92,"by":93,"text":94},"21135092","kuu","Wow! Nice effects. Great job!",{"id":96,"by":97,"text":98},"21135213","2sk21","Wonderfully artistic!",{"id":100,"by":101,"text":102},"21136450","yreg","The photos itself are also very nicely done!",{"value":104,"source":89,"evidence":105},"Good blend of art and technology",[106,110],{"id":107,"by":108,"text":109},"21135193","heyflyguy","I absolutely love the intersection of technology and art, nicely done!!",{"id":58,"by":59,"text":60},{"value":112,"source":89,"evidence":113},"Well-written, detailed development write-up",[114,118,122],{"id":115,"by":116,"text":117},"21135027","rmbryan","That's fun to read! Thank you for the excellent write-up.",{"id":119,"by":120,"text":121},"21135119","pvirgiliu","Thank you for sharing this.",{"id":123,"by":124,"text":125},"21135390","lr4444lr","Great write up.",[127,141],{"value":128,"source":89,"evidence":129},"Pixelstick already existed; project not original",[130,134,137],{"id":131,"by":132,"text":133},"21135368","1g0rb","Really great writeup and results! I did something similar but much simpler few years ago (https:\u002F\u002Fhyperglitch.com\u002Farticles\u002Flightstick) but instead of long exposure (as I didn't…",{"id":135,"by":11,"text":136},"21135529","Oh jeez, the Pixelstick existed back in 2015? Looks like I was quite late.",{"id":138,"by":139,"text":140},"21138510","dschiffner","I think the Pixelstick originally debuted on Kickstarter in 2013 and then a more refined version came out in maybe 2016. Kickstarter link:…",{"value":142,"source":89,"evidence":143},"Light painting has been done for years",[144,148],{"id":145,"by":146,"text":147},"21136210","faceplanted","This has actually been being done for a decade at least, you can find instructions online for it, I had the same experience with just about every idea I had when I first joined…",{"id":149,"by":150,"text":151},"21135771","glenneroo","Even Picasso did (purportedly) the first light paintings (manually of course) back in 1949, and I've been doing manual painting with various flashlights, LED lights, fire,…",[153,161],{"value":154,"source":89,"evidence":155},"Share the source code and BOM",[156,157],{"id":54,"by":55,"text":56},{"id":158,"by":159,"text":160},"21153764","skypanther","I'd love to see your code. In particular, I'd like to see what you did with \"I could just directly assign the data I read from the SD card to the internal buffer of the LED…",{"value":162,"source":89,"evidence":163},"Add depth or 3D support",[164],{"id":165,"by":166,"text":167},"21135168","sdrothrock","I really enjoyed reading about your development process! I was thinking the entire way though that it was kind of a shame that most of the images were just making \"hologram-like\"…",[169,180],{"value":170,"source":89,"evidence":171},"How the person holding the strip is removed from photos",[172,176],{"id":173,"by":174,"text":175},"21141359","kelvin0","Great work, very well executed. But I have one question: if a person is moving the stick around while capturing, how do you remove the person and keep only the LEDs in the final…",{"id":177,"by":178,"text":179},"21139119","dhlin","How the person who grabs the pixel sticks is removed from the final photography?",{"value":181,"source":89,"evidence":182},"Whether the Wi-Fi dropped packets are an issue",[183],{"id":184,"by":185,"text":186},"21137106","jeffschofield","This is really cool! I built something almost exactly like this, though we used the ESP32 instead. [1] What I find interesting is that I never had an issue with dropped columns…",[188,196,203],{"value":189,"source":89,"evidence":190},"Pixelstick",[191,195],{"id":192,"by":193,"text":194},"21135320","apandhi","For an out of the box solution, take a look at the pixelstick",{"id":138,"by":139,"text":140},{"value":197,"source":89,"evidence":198},"Light scythe",[199],{"id":200,"by":201,"text":202},"21138953","Tepix","This is neat! I read about it (called light scythe https:\u002F\u002Ftechcrunch.com\u002F2011\u002F06\u002F28\u002Flight-scythe-is-a-monster-led-strip-for-long-exposure-art\u002F ) and building my own for the 2011…",{"value":204,"source":89,"evidence":205},"ESP32-based light brush",[206],{"id":184,"by":185,"text":186},{"comments":208,"answered":209,"key":210},32,6,[211,213,216],{"id":212,"text":6},"21137417",{"id":214,"text":215},"21138527","If you move it that fast, you can also probably see it with the naked eye, so it wouldn't be much of a surprise :P",{"id":217,"text":218},"21135400","Oh wow, I guess I'm not as original as I thought :P That looks great, and you can get lots of long exposure apps for your phone so you don't have to use a script to reconstruct…",{"commenters":220,"max_depth":38,"maker_replies":208,"first_comment_mins":221,"lifespan_hours":222},46,26,47,[224,226,230,232,235,237,239,242,243,246,249,251,253,254,256,257,259,262,264,268,270,272,274,278,280,283,286,287,290,292,294,298,301,302,303,305,307,309,313,317,320,322,324,328,331,335,339,341,343,346,349,350,351,352,353,356,359,363,365,368,370,373,378,381,385,389,391,393,395,399,403,407,409,411,412,416,417,419,420,422,426,428,430,432,436,438,442,444,446,448,450],[212,34,34,225,11,42],"other\u002Fneutral\u002Fnone",[227,34,45,228,229,34],"21138193","project\u002Fneutral\u002Fidea","soperj",[214,34,34,231,11,42],"commenter\u002Fneutral\u002Fnone",[233,34,34,234,201,34],"21138977","other\u002Fneutral\u002Fidea",[131,42,46,236,132,34],"project\u002Fpositive\u002Fexecution",[217,42,34,238,11,42],"project\u002Fneutral\u002Fnone",[240,42,34,241,132,34],"21135471","commenter\u002Fneutral\u002Fidea",[135,42,34,241,11,42],[244,42,46,245,132,34],"21135642","maker\u002Fpositive\u002Fexecution",[247,42,34,248,11,42],"21135663","maker\u002Fneutral\u002Fnone",[149,42,45,250,150,34],"project\u002Fmixed\u002Fidea",[252,42,34,228,11,42],"21135847",[145,42,45,250,146,34],[255,42,34,248,11,42],"21136243",[138,42,45,228,139,34],[258,42,34,231,11,42],"21138545",[260,18,45,250,261,34],"21136998","ksaj",[263,18,34,238,11,42],"21137337",[265,18,46,266,267,34],"21137675","project\u002Fpositive\u002Fnone","radioactivist",[269,18,34,266,11,42],"21137740",[271,18,46,266,261,34],"21139785",[273,18,46,266,261,34],"21139735",[275,45,46,276,277,34],"21137851","project\u002Fpositive\u002Fidea","fitzroy",[279,45,34,231,11,42],"21137922",[281,45,46,276,282,34],"21139507","adfgadfasa",[284,33,46,276,285,34],"21135851","nathancahill",[184,46,46,236,185,34],[288,46,34,289,11,42],"21137377","maker\u002Fneutral\u002Fexecution",[291,46,45,289,185,34],"21138214",[293,46,34,289,11,42],"21138490",[295,209,34,296,297,34],"21136009","other\u002Fpositive\u002Fidea","netgusto",[299,209,34,300,11,42],"21136132","other\u002Fpositive\u002Fperformance",[200,40,46,276,201,34],[165,38,45,250,166,34],[304,38,34,228,11,42],"21135183",[306,38,45,228,166,34],"21135205",[308,38,34,228,11,42],"21135253",[310,311,46,266,312,34],"21142121",9,"neuralzen",[314,315,45,228,316,34],"21136239",10,"GistNoesis",[318,315,34,319,11,42],"21136366","project\u002Fneutral\u002Fperformance",[321,315,45,319,316,34],"21136672",[323,315,34,276,11,42],"21136765",[325,326,45,248,327,34],"21138798",11,"ebspelman",[329,326,34,330,11,42],"21140754","maker\u002Fpositive\u002Fnone",[332,333,46,236,334,34],"21138365",12,"ww520",[336,337,45,228,338,34],"21137297",13,"Jarwain",[340,337,34,238,11,42],"21137322",[342,337,45,238,338,34],"21139023",[173,344,45,345,174,34],14,"project\u002Fneutral\u002Fexecution",[347,344,45,345,348,34],"21141419","roddds",[54,32,46,330,55,34],[66,32,34,345,11,42],[158,32,45,289,159,34],[80,32,34,345,11,42],[58,354,46,355,59,34],16,"maker\u002Fpositive\u002Fidea",[357,354,34,358,11,42],"21138597","maker\u002Fneutral\u002Fidea",[360,361,34,234,362,34],"21136246",17,"tnolet",[364,361,34,225,132,34],"21136426",[366,361,34,234,367,34],"21138701","dekhn",[115,369,46,330,116,34],18,[371,369,34,372,11,42],"21135072","maker\u002Fneutral\u002Fdocs",[374,375,46,376,377,34],"21135194",19,"project\u002Fpositive\u002Fperformance","fredley",[379,375,34,380,11,42],"21135211","maker\u002Fneutral\u002Fdesign",[382,383,34,225,384,34],"21138902",20,"crtlaltdel",[386,387,45,228,388,34],"21137101",21,"anfractuosity",[390,387,34,358,11,42],"21137389",[392,387,45,228,388,34],"21137464",[394,387,34,358,11,42],"21137495",[396,397,34,225,398,34],"21138887",22,"Grollicus",[400,401,46,276,402,34],"21138255",23,"vavooom",[404,405,34,234,406,34],"21137700",24,"amelius",[408,405,34,225,201,34],"21139010",[410,405,34,234,406,34],"21140071",[177,31,45,345,178,34],[413,31,34,414,415,34],"21140212","commenter\u002Fneutral\u002Fexecution","oldgradstudent",[107,221,46,276,108,34],[418,221,34,276,11,42],"21135216",[100,221,46,236,101,34],[421,221,34,236,11,42],"21136525",[423,424,46,266,425,34],"21136973",27,"klausjensen",[427,424,34,238,11,42],"21137398",[192,429,34,225,193,34],28,[96,431,46,236,97,34],29,[433,434,34,225,435,34],"21136941",30,"herpderp3dtwerp",[437,434,34,225,139,34],"21138592",[439,440,46,276,441,34],"21136614",31,"code4tee",[123,208,46,443,124,34],"maker\u002Fpositive\u002Fdocs",[92,445,46,236,93,34],33,[447,445,34,248,11,42],"21135104",[119,449,46,443,120,34],34,[451,449,34,248,11,42],"21135128",[],[454,459,463,468,473,477],{"id":455,"name":456,"points":457,"category":458},"21101918","Bot Land",444,"games",{"id":460,"name":461,"points":462,"category":458},"21136364","Astro Golf",232,{"id":464,"name":465,"points":466,"category":467},"21106611","Ieddit",220,"consumer_social",{"id":469,"name":470,"points":471,"category":472},"21110425","Aristotl",173,"learning_science",{"id":474,"name":475,"points":476,"category":472},"21106202","Ansible Crash Course",160,{"id":478,"name":479,"points":480,"category":481},"21114491","boot2c",147,"dev_tools",false,"v2",{"id":485,"name":5,"line":486,"ai":482,"cat":20,"year":13,"points":14,"comments":15,"rec":28,"s":487,"top":18,"kw":488,"maker":11,"domain":10,"tier":19,"attempts":34,"strip":489,"url":9,"mix":490,"praise":88,"objection":128,"sub":21},21134903,"I have to say, I really love the comments here, I post something I made and everyone chimes in with a bunch…",0.6,[24,25,26,27],"3055333355553053533533535055335035555555",[31,32,33,34],1793990995763]