[{"data":1,"prerenderedAt":391},["ShallowReactive",2],{"project-9610509":3},{"id":4,"name":5,"line":5,"line_source":6,"title":7,"url":8,"domain":9,"maker":10,"posted_at":11,"year":12,"points":13,"comments":14,"rank_in_year":15,"shown_in_year":16,"top":17,"tier":18,"category":19,"subcategory":20,"format":19,"keywords":21,"reception":26,"sentiment":27,"stance_mix":28,"scored_comments":33,"aspects":34,"strip":45,"post_text":47,"what":48,"said":91,"maker_in_thread":182,"shape":184,"grid":188,"attempts":352,"same_week":353,"maker_shows":317,"maker_hidden":383,"reader_version":384,"card":385},"9610509","An old rotary phone converted into a mobile phone","title","Show HN: An old rotary phone converted into a mobile phone","http:\u002F\u002Fwww.stavros.io\u002Fposts\u002Firotary-saga\u002F","stavros.io","stavros",1432724832,2015,222,61,80,2565,4,"notable","hardware","phone conversion",[22,23,24,25],"rotary phone","gsm arduino","mobile phone hack","rotary dialer","curious",0.305,{"positive":29,"neutral":30,"mixed":31,"critical":32},16,23,1,5,45,{"idea":35,"execution":37,"docs":39,"performance":40,"privacy":41,"pricing":42,"design":44},{"positive":36,"critical":17},8,{"positive":38,"critical":38},0,{"positive":31,"critical":38},{"positive":38,"critical":38},{"positive":38,"critical":38},{"positive":43,"critical":31},2,{"positive":31,"critical":38},[32,46,38,38,38,38,32,32,31,46,32,32,46,46,46,46,31,31,38,46,46,46,46,46,31,32,32,38,32,32,32,32,32,32,32,46,32,31,46,32],3,null,{"problem":49,"audience":47,"pricing":47,"motivation":55,"time_to_build":66,"stack":70,"openness":88,"stage":89,"team_size":90},{"value":50,"source":51,"evidence":52},"Makes an old rotary phone work as a mobile phone","inferred",[53],{"id":54},"post",{"value":56,"source":57,"evidence":58},"Fun project","commenter",[59,63],{"id":60,"by":61,"text":62},"9611061","StavrosK","Oh no :P I know other such conversions exist, I meant I only made one. I did it because it was fun, though, so I don't mind that there are others.",{"id":64,"by":61,"text":65},"9612978","I agree, I don't care about either, since it was very fun to work on! However, some people were asking me how much it cost, and saying it cost $150 in parts would be…",{"value":67,"source":57,"evidence":68},"About $2000 in development time, $150 in parts (partly tongue-in-cheek)",[69],{"id":64,"by":61,"text":65},[71,80],{"value":72,"source":57,"evidence":73},"Arduino",[74,77],{"id":75,"by":61,"text":76},"9610982","The idea is 100% original, we just had the 100% original idea independently :P Yeah, I don't think this would be possible without the Arduino or a similar embedded processor, and…",{"id":78,"by":61,"text":79},"9610989","The GSM shield messes up if you poll too often, IIRC.",{"value":81,"source":57,"evidence":82},"SIM90x GSM modem shield",[83,87],{"id":84,"by":85,"text":86},"9611560","q3k","You should reevaluate your architecture. Instead of delaying in code, think about having the main loop enter the execution routines of a few FSMs (modem FSM, i\u002Fo FSM, etc). In…",{"id":78,"by":61,"text":79},"unknown","launched","solo",{"praise":92,"objections":119,"requests":142,"questions":158,"alternatives":169},[93,108],{"value":94,"source":57,"evidence":95},"Fun and clever hack",[96,100,104],{"id":97,"by":98,"text":99},"9611225","kozukumi","Ha I love it! I love seeing old hardware hacked to bring it kicking and screaming into the modern world. This is why I love things like Arduino's. They a cheap but so much fun.…",{"id":101,"by":102,"text":103},"9612436","zw123456","I did one about 10years ago using an old phone I got at a garage sale. I was going to copy the Sparkfun design but instead I made mine a Bluetooth one so that you don't have to…",{"id":105,"by":106,"text":107},"9611544","freshyill","I love this project. The great thing about it, unlike many technically impressive projects, is that it's only going to get more and more fun to take this out as time goes on. If…",{"value":109,"source":57,"evidence":110},"Nice write-up and build",[111,115],{"id":112,"by":113,"text":114},"9612913","mellavora","A classy product and an even classier write-up! \"Having solved two problems with one excuse,...\" I trust I am free to also use this phrase? Beautiful!",{"id":116,"by":117,"text":118},"9611139","jsingleton","Awesome job! If you haven't already submitted this to hackaday then you really should: http:\u002F\u002Fhackaday.com\u002Fsubmit-a-tip\u002F",[120,135],{"value":121,"source":57,"evidence":122},"Similar projects already exist (Sparkfun kit)",[123,127,131],{"id":124,"by":125,"text":126},"9611740","_rknLA","Unfortunately not even a shoutout to the nearly-identical Sparkfun project from over 10 years ago... https:\u002F\u002Fwww.sparkfun.com\u002Ftutorials\u002F51",{"id":128,"by":129,"text":130},"9612466","Animats","As others have pointed out, this has been done many times before. There's even a commercial product to pair an analog phone to a Bluetooth cell phone.[1] It generates proper ring…",{"id":132,"by":133,"text":134},"9611043","fnordfnordfnord","I'm afraid this project has been done many times by many people. SparkFun has even made a (now retired) kit. https:\u002F\u002Fwww.sparkfun.com\u002Fproducts\u002Fretired\u002F287…",{"value":136,"source":57,"evidence":137},"Pricing time cost takes fun out",[138],{"id":139,"by":140,"text":141},"9612950","andmarios","A tiny bit of criticism. “The entire build cost something like $150 in parts and $2000 in development time.” I think adding a price to a personal project takes part of the fun…",[143],{"value":144,"source":57,"evidence":145},"Commercial sale or Kickstarter",[146,150,154],{"id":147,"by":148,"text":149},"9610961","aout","Go for the Kickstarter! :D",{"id":151,"by":152,"text":153},"9611032","nakedrobot2","Hi, I love your phone :) I'd also love to have one. My friend here in Prague I think would be able to help with the design in order to keep the bell - it MUST be possible. Also a…",{"id":155,"by":156,"text":157},"9611987","ASlave2Gravity","This is crazy! You could sell these, I'm sure there's a market for them. Great hack!",[159],{"value":160,"source":57,"evidence":161},"Can the original ringer be used?",[162,166],{"id":163,"by":164,"text":165},"9611007","fiatpandas","Really fun project and great end result, although sucks you couldn't make use of the original bell. I recently bought an AT&T Traditional 100 touch tone phone with a similar…",{"id":167,"by":61,"text":168},"9611049","This phone also has a two-state button, which I made into \"force dial\" (when you've already dialed some numbers) or \"redial\" if you haven't dialed anything. Someone did actually…",[170,178],{"value":171,"source":57,"evidence":172},"Sparkfun rotary phone kit",[173,174],{"id":124,"by":125,"text":126},{"id":175,"by":176,"text":177},"9612059","0xdeadbeefbabe","Sparkfun did for a while https:\u002F\u002Fwww.sparkfun.com\u002Fproducts\u002Fretired\u002F287",{"value":179,"source":57,"evidence":180},"Bluetooth rotary phone gateway",[181],{"id":128,"by":129,"text":130},{"comments":38,"answered":38,"key":183},[],{"commenters":185,"max_depth":186,"maker_replies":38,"first_comment_mins":36,"lifespan_hours":187},40,6,15,[189,191,195,197,200,202,205,208,211,215,217,221,222,226,228,232,234,235,239,241,244,246,248,250,253,254,257,258,261,266,269,270,271,276,279,283,285,288,290,293,295,299,303,305,307,310,314,316,318,319,323,327,329,334,337,339,340,341,342,344,347],[97,38,32,190,98,38],"project\u002Fpositive\u002Fidea",[192,38,46,193,194,38],"9611396","project\u002Fneutral\u002Fexecution","malnourish",[196,38,46,193,98,38],"9611982",[198,38,38,199,61,38],"9611549","other\u002Fneutral\u002Fnone",[201,38,38,199,98,38],"9612061",[203,38,38,204,61,38],"9612099","commenter\u002Fneutral\u002Fnone",[206,38,38,199,207,38],"9612924","kejaed",[209,38,38,210,61,38],"9613051","other\u002Fneutral\u002Fpricing",[212,38,38,213,214,38],"9615754","other\u002Fneutral\u002Fdocs","Immortalin",[101,31,32,216,102,38],"maker\u002Fpositive\u002Fnone",[218,43,32,219,220,38],"9610972","maker\u002Fpositive\u002Fidea","josteink",[75,43,38,204,61,38],[223,43,31,224,225,38],"9611618","project\u002Fcritical\u002Fidea","userbinator",[227,43,38,204,61,38],"9611734",[229,46,46,230,231,38],"9610847","maker\u002Fneutral\u002Fnone","pearjuice",[233,46,32,190,61,38],"9610932",[105,46,32,190,106,38],[236,17,46,237,238,38],"9610600","project\u002Fneutral\u002Fdocs","xnzakg",[240,17,46,193,61,38],"9610632",[242,17,46,193,243,38],"9610863","ICWiener",[78,17,46,245,61,38],"project\u002Fneutral\u002Fperformance",[84,17,46,247,85,38],"maker\u002Fneutral\u002Fexecution",[249,17,46,247,61,38],"9611659",[251,17,46,193,252,38],"9613676","BostonEnginerd",[124,32,31,224,125,38],[255,32,38,204,256,38],"9612273","JshWright",[128,186,31,224,129,38],[259,186,38,199,260,38],"9614377","nickpsecurity",[262,263,46,264,265,38],"9610534",7,"project\u002Fneutral\u002Fidea","theklub",[267,263,46,264,268,38],"9612429","njharman",[163,36,46,264,164,38],[167,36,46,247,61,38],[272,273,46,274,275,38],"9610872",9,"project\u002Fmixed\u002Fprivacy","FWeinb",[277,273,38,278,61,38],"9610923","commenter\u002Fneutral\u002Fprivacy",[280,281,46,245,282,38],"9612096",10,"lepht",[284,281,46,245,61,38],"9612125",[139,286,31,287,140,38],11,"project\u002Fcritical\u002Fpricing",[64,286,46,289,61,38],"maker\u002Fneutral\u002Fpricing",[116,291,32,292,117,38],12,"project\u002Fpositive\u002Fnone",[294,291,46,230,61,38],"9611341",[296,297,32,190,298,38],"9614092",13,"moreentropy",[300,301,38,199,302,38],"9615591",14,"thret",[112,187,32,304,113,38],"maker\u002Fpositive\u002Fdocs",[306,187,38,204,61,38],"9612967",[308,29,32,190,309,38],"9611547","lanstein",[311,312,32,216,313,38],"9612027",17,"madman86",[315,312,38,199,176,38],"9612046",[155,317,32,190,156,38],18,[175,317,46,264,176,38],[320,321,32,190,322,38],"9611269",19,"kbart",[324,325,32,216,326,38],"9611260",20,"bketelsen",[328,325,38,204,61,38],"9611291",[330,331,32,332,333,38],"9610693",21,"project\u002Fpositive\u002Fpricing","sokratisp",[335,331,46,336,61,38],"9610744","project\u002Fneutral\u002Fnone",[147,331,46,338,148,38],"project\u002Fneutral\u002Fpricing",[151,331,32,332,152,38],[132,331,31,224,133,38],[60,331,46,230,61,38],[343,331,38,204,133,38],"9611204",[345,331,46,338,346,38],"9611671","alexc05",[348,349,32,350,351,38],"9613148",22,"project\u002Fpositive\u002Fdesign","MyNameIsMK",[],[354,359,364,369,373,378],{"id":355,"name":356,"points":357,"category":358},"9588128","Visa Explorer",582,"data",{"id":360,"name":361,"points":362,"category":363},"9604203","jsblocks",337,"languages",{"id":365,"name":366,"points":367,"category":368},"9583384","jsgraphs",328,"dev_tools",{"id":370,"name":371,"points":372,"category":368},"9583976","InboxSDK",176,{"id":374,"name":375,"points":376,"category":377},"9598972","Typedetail.com",137,"creative",{"id":379,"name":380,"points":381,"category":382},"9608653","melody-jsnes",127,"games",false,"v2",{"id":386,"name":5,"line":5,"ai":383,"cat":19,"year":12,"points":13,"comments":14,"rec":26,"s":387,"top":17,"kw":388,"maker":10,"domain":9,"tier":18,"attempts":38,"strip":389,"url":8,"mix":390,"praise":94,"objection":121,"sub":20},9610509,0.31,[22,23,24,25],"5300005513553333110333331550555555535135",[29,30,31,32],1794036531730]