[{"data":1,"prerenderedAt":570},["ShallowReactive",2],{"project-40789672":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":46,"post_text":48,"what":49,"said":70,"maker_in_thread":186,"shape":197,"grid":201,"attempts":531,"same_week":532,"maker_shows":33,"maker_hidden":562,"reader_version":563,"card":564},"40789672","flipdisc","A JavaScript-powered flipdisc display","title","Show HN: I built a JavaScript-powered flipdisc display","https:\u002F\u002Fflipdisc.io\u002F","flipdisc.io","simpsoka",1719328448,2024,455,121,83,3515,3,"legend","creative","kinetic display art","hardware",[24,25,26,27],"flip disc display","flip dot display","alfazeta","javascript display","curious",0.101,{"positive":31,"neutral":32,"mixed":33,"critical":34},13,44,1,9,67,{"performance":37,"docs":39,"idea":41,"design":42,"pricing":43,"execution":45},{"positive":38,"critical":33},0,{"positive":38,"critical":40},5,{"positive":34,"critical":33},{"positive":18,"critical":38},{"positive":38,"critical":44},2,{"positive":38,"critical":38},[18,18,18,47,18,18,40,33,38,38,38,38,40,40,18,18,40,18,18,47,40,18,18,40,40,18,47,18,18,18,44,18,18,18,33,33,33,18,18,33],4,null,{"problem":48,"audience":48,"pricing":50,"motivation":48,"time_to_build":48,"stack":61,"openness":68,"stage":69,"team_size":68},{"value":51,"source":52,"evidence":53},"Alfazeta panels cost about 220 EUR per 7x28 panel, per a commenter; maker paid a fraction of list via eBay","commenter",[54,58],{"id":55,"by":56,"text":57},"40794268","lanewinfield","Speaking as someone who also recently purchased these panels (and read the second paragraph where they mention where they got them), they're from the company AlfaZeta. They build…",{"id":59,"by":11,"text":60},"40790378","I paid a fraction of that. They'll come up on eBay every once in a while.",[62],{"value":63,"source":64,"evidence":65},"JavaScript","inferred",[66],{"id":67},"post","unknown","launched",{"praise":71,"objections":97,"requests":128,"questions":144,"alternatives":160},[72,87],{"value":73,"source":52,"evidence":74},"Cool, tactile, physical display with satisfying clicking sound",[75,79,83],{"id":76,"by":77,"text":78},"40791762","tailspin2019","In a world of flat featureless screens, I really love the physicality of this. Even the noise it makes. It feels like it communicates a lot more than its raw “pixel” count would…",{"id":80,"by":81,"text":82},"40790247","nico","This looks amazingly cool. Love the old school “analog” feel of it Thank you for sharing",{"id":84,"by":85,"text":86},"40802149","glitcher","I always liked the clickity sounds of those panels updating!",{"value":88,"source":52,"evidence":89},"Good idea for NOC monitoring or ambient alerts",[90,94],{"id":91,"by":92,"text":93},"40792150","Corrado","I think this could be useful as a NOC monitor. Mostly the display is static but if something goes wrong the display updates and the noise naturally draws your attention. No…",{"id":95,"by":11,"text":96},"40792624","I love this idea. It alerts you without the adrenaline spike.",[98,113],{"value":99,"source":52,"evidence":100},"Panels are expensive and hard to source for hobbyists",[101,105,109],{"id":102,"by":103,"text":104},"40790295","BeefySwain","How exactly did the author get the panels? I've looked into stuff like this before and it's basically impossible to source outside of things like eBay. Unless you're willing to…",{"id":106,"by":107,"text":108},"40790338","carb","I was about to post the same. The result is really nice, and makes the conclusion make a lot of sense. > I do hope that flipdiscs become more accessible for hobbyists. If anyone…",{"id":110,"by":111,"text":112},"40799719","noisy_boy","I have looking for a cheap low-res 18in x 10in display so that I can display stuff to it via Python using a raspberry pi; this is very interesting but its a bit too big and…",{"value":114,"source":52,"evidence":115},"Panels have mechanical moving parts and finite lifespan, contrary to the post's claims",[116,120,124],{"id":117,"by":118,"text":119},"40791470","crazygringo","I don't really see what the distinction is? You might as well say a motor has no moving parts, because it's done with electromagnetic impulses. But that would be absurd.…",{"id":121,"by":122,"text":123},"40790620","rhaps0dy","> Flip displays are an interesting alternative. They have no moving parts, What? The display is made almost entirely of moving discs.",{"id":125,"by":126,"text":127},"40790821","omoikane","> near limitless lifespan The lifespan is probably not as limitless as you might have imagined, the discs tend to fall off or get stuck. But they are really neat while they are…",[129,137],{"value":130,"source":131,"evidence":132},"Cheaper hobbyist flip-disc hardware","maker",[133,136],{"id":134,"by":11,"text":135},"40790355","I got mine off eBay, but you can get the same panels from AlfaZeta. There are some more affordable options like:…",{"id":106,"by":107,"text":108},{"value":138,"source":52,"evidence":139},"Power draw figures",[140],{"id":141,"by":142,"text":143},"40800163","nirav72","This is neat. But wondering what the power draw for something like this would be?",[145,153],{"value":146,"source":52,"evidence":147},"How were the panels sourced and at what price",[148,149],{"id":102,"by":103,"text":104},{"id":150,"by":151,"text":152},"40791018","tivert","> We used 9 Alfazeta panels in a 3x3 grid or 84x42 discs. Each board has (2) 28x7 panels. So how much do one of those cost? The website…",{"value":154,"source":52,"evidence":155},"How do discs flip without moving parts",[156],{"id":157,"by":158,"text":159},"40789890","imzadi","How do they have no moving parts?",[161,172,179],{"value":162,"source":52,"evidence":163},"Vestaboard",[164,168],{"id":165,"by":166,"text":167},"40789914","beatboxrevival","I've been coveting a Vestaboard, but this seems like a more interesting alternative. Thanks for the guide!",{"id":169,"by":170,"text":171},"40790816","scosman","Love this. Reminds me of the “flip flap” boards in old train stations. Like https:\u002F\u002Fwww.vestaboard.com\u002F",{"value":173,"source":52,"evidence":174},"Breakfast Studio flip-disc art",[175],{"id":176,"by":177,"text":178},"40790342","proee","Breakfast studio offers some amazing art pieces using Flipdisc modules. https:\u002F\u002Fbreakfaststudio.com\u002Fflip-discs",{"value":180,"source":52,"evidence":181},"Motus.art FlipDots by Owen McAteer",[182],{"id":183,"by":184,"text":185},"40797343","jschulenklopper","Owen McAteer, https:\u002F\u002Fmotus.art\u002F, @motus_art did something similar with the flip-dot displays from AlfaZeta. I have no stake, but I'm a fan of his work. His code can be found at…",{"comments":187,"answered":188,"key":189},19,7,[190,193,194],{"id":191,"text":192},"40790919","For sure. They're similar to butterfly wings. It's easy to lose or break discs. Our kids loved touching them while we were building, and we'd constantly have to replace discs…",{"id":134,"text":135},{"id":195,"text":196},"40792057","Nothing - just might have to wait a bit for them to come up.",{"commenters":198,"max_depth":199,"maker_replies":187,"first_comment_mins":187,"lifespan_hours":200},78,6,174,[202,204,206,210,214,217,220,223,227,229,233,236,238,242,243,245,248,252,253,254,258,261,265,269,272,274,276,279,283,286,289,291,294,297,300,302,304,305,307,311,313,316,319,323,325,327,330,333,334,336,338,340,343,345,349,351,353,355,359,361,363,366,369,374,378,381,384,388,391,394,396,398,402,404,407,409,413,417,419,423,427,429,434,436,440,442,446,448,451,454,456,460,464,465,466,468,471,473,476,479,482,485,488,489,491,493,495,497,500,502,504,507,509,513,516,518,520,522,525,527,529],[125,38,18,203,126,38],"project\u002Fmixed\u002Fperformance",[191,38,38,205,11,33],"maker\u002Fneutral\u002Fperformance",[207,38,18,208,209,38],"40794086","project\u002Fneutral\u002Fperformance","amelius",[211,38,18,212,213,38],"40794274","project\u002Fneutral\u002Fdocs","wrs",[215,38,18,208,216,38],"40794836","kajecounterhack",[218,38,18,208,219,38],"40797265","vasco",[221,38,18,208,222,38],"40825665","garfieldnate",[224,33,18,225,226,38],"40793219","project\u002Fneutral\u002Fidea","nayuki",[176,44,38,228,177,38],"other\u002Fneutral\u002Fidea",[230,44,40,231,232,38],"40791446","project\u002Fpositive\u002Fdesign","ianbicking",[234,44,18,235,166,38],"40792025","project\u002Fneutral\u002Fpricing",[237,44,18,208,209,38],"40794190",[239,44,38,240,241,38],"40806174","other\u002Fneutral\u002Fnone","dtagames",[102,18,18,235,103,38],[134,18,38,244,11,33],"maker\u002Fneutral\u002Fpricing",[246,18,18,235,247,38],"40798756","sbarre",[249,18,18,250,251,38],"40791713","maker\u002Fneutral\u002Fnone","fragmede",[195,18,38,244,11,33],[55,18,18,235,56,38],[255,47,40,256,257,38],"40790697","project\u002Fpositive\u002Fidea","leetharris",[259,47,38,240,260,38],"40790769","spankalee",[262,47,33,263,264,38],"40792906","project\u002Fcritical\u002Fidea","bigstrat2003",[266,47,38,267,268,38],"40794528","commenter\u002Fneutral\u002Fnone","phist_mcgee",[270,47,38,267,271,38],"40795576","ClassyJacket",[273,47,38,267,268,38],"40795611",[275,47,38,267,271,38],"40796379",[277,47,38,267,278,38],"40797748","tetris11",[280,47,38,281,282,38],"40793134","commenter\u002Fneutral\u002Fidea","risenshinetech",[284,47,38,267,285,38],"40793961","aembleton",[287,47,38,267,288,38],"40794478","pengaru",[290,47,38,267,247,38],"40798769",[292,47,38,281,293,38],"40802760","verbalstoner",[295,47,38,267,296,38],"40795870","bl4ckneon",[298,47,38,267,299,38],"40796350","beaugunderson",[301,47,38,267,257,38],"40860625",[303,47,38,267,271,38],"40795580",[91,40,40,256,92,38],[95,40,38,306,11,33],"maker\u002Fneutral\u002Fidea",[308,40,18,309,310,38],"40798141","project\u002Fneutral\u002Fdesign","newaccount74",[312,199,18,225,226,38],"40790632",[314,199,40,256,315,38],"40791772","sphars",[317,188,38,240,318,38],"40800679","tuna-f1sh",[320,321,18,225,322,38],"40789970",8,"pvg",[324,321,38,240,11,33],"40790119",[326,321,38,240,77,38],"40791735",[328,34,38,228,329,38],"40797093","rob74",[331,34,33,332,142,38],"40800136","project\u002Fcritical\u002Fperformance",[84,34,40,231,85,38],[165,335,40,256,166,38],10,[183,337,38,240,184,38],11,[150,339,18,235,151,38],12,[341,339,18,235,342,38],"40791049","elaus",[344,339,18,235,56,38],"40794280",[346,31,18,347,348,38],"40791566","project\u002Fneutral\u002Fexecution","yyyfb",[350,31,18,347,213,38],"40794300",[352,31,18,347,348,38],"40794890",[354,31,18,347,166,38],"40794987",[356,357,18,225,358,38],"40790030",14,"LordShredda",[80,360,40,231,81,38],15,[362,360,18,309,226,38],"40794044",[364,360,38,267,365,38],"40795380","oops",[367,368,40,256,222,38],"40825405",16,[370,371,18,372,373,38],"40797054",17,"project\u002Fneutral\u002Fnone","helsinkiandrew",[375,376,38,240,377,38],"40794530",18,"IIAOPSW",[379,376,38,267,380,38],"40797783","voidUpdate",[382,187,18,372,383,38],"40798720","dmd",[385,386,40,256,387,38],"40792200",20,"cperry",[389,386,38,390,11,33],"40792233","maker\u002Fpositive\u002Fnone",[110,392,33,393,111,38],21,"project\u002Fcritical\u002Fpricing",[76,395,40,256,77,38],22,[397,395,38,256,11,33],"40791897",[399,400,18,225,401,38],"40793451",23,"hex4def6",[169,403,40,256,170,38],24,[405,403,38,240,406,38],"40791009","yojo",[408,403,38,240,213,38],"40794313",[410,411,38,240,412,38],"40789915",25,"seanvelasco",[414,415,18,372,416,38],"40791395",26,"dehugger",[418,415,38,231,11,33],"40791468",[420,421,18,372,422,38],"40795299",27,"GalaxyNova",[424,425,40,256,426,38],"40795313",28,"ElCapitanMarkla",[141,428,18,208,142,38],29,[430,431,33,432,433,38],"40800871",30,"project\u002Fcritical\u002Fdocs","olalonde",[435,431,38,250,11,33],"40807242",[437,438,40,390,439,38],"40791155",31,"wferrell",[441,438,38,390,11,33],"40792079",[443,444,18,208,445,38],"40790346",32,"ape4",[447,444,38,208,11,33],"40790370",[449,444,18,208,450,38],"40791887","its_ethan",[452,444,18,208,453,38],"40796182","mmcclure",[455,444,18,208,450,38],"40801251",[457,458,18,225,459,38],"40792155",33,"eterevsky",[461,462,18,235,463,38],"40790282",34,"notatoad",[106,462,33,393,107,38],[59,462,38,244,11,33],[467,462,38,267,107,38],"40791236",[469,462,18,235,470,38],"40790431","anfractuosity",[157,472,18,212,158,38],35,[474,472,38,240,475,38],"40789981","omneity",[477,472,38,240,478,38],"40790860","adolph",[480,472,38,240,481,38],"40795660","hatthew",[483,472,18,212,484,38],"40789982","dylan604",[486,472,38,487,11,33],"40790076","maker\u002Fneutral\u002Fdocs",[117,472,33,432,118,38],[490,472,38,267,166,38],"40791663",[492,472,38,267,118,38],"40791938",[494,472,38,487,11,33],"40792169",[496,472,38,267,282,38],"40793245",[498,472,33,432,499,38],"40791699","lucianbr",[501,472,33,432,282,38],"40793167",[503,472,38,487,11,33],"40793480",[505,472,18,212,506,38],"40790103","endisneigh",[508,472,38,487,11,33],"40792175",[510,511,18,372,512,38],"40790334",36,"jstanley",[514,511,18,212,515,38],"40790382","qmarchi",[517,511,38,487,11,33],"40790395",[519,511,18,212,322,38],"40790436",[521,511,38,487,11,33],"40790479",[523,511,18,212,524,38],"40790796","dang",[121,526,33,432,122,38],37,[528,526,38,487,11,33],"40790676",[530,526,38,267,499,38],"40791771",[],[533,538,543,547,552,557],{"id":534,"name":535,"points":536,"category":537},"40740021","rahulilango.com",1054,"learning_science",{"id":539,"name":540,"points":541,"category":542},"40757951","Web 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