[{"data":1,"prerenderedAt":404},["ShallowReactive",2],{"project-7518564":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":20,"keywords":22,"reception":28,"sentiment":29,"stance_mix":30,"scored_comments":35,"aspects":36,"strip":46,"post_text":48,"what":49,"said":78,"maker_in_thread":201,"shape":212,"grid":216,"attempts":364,"same_week":365,"maker_shows":33,"maker_hidden":396,"reader_version":397,"card":398},"7518564","Notifon","This notifying device – electronics, code, design, marketing","title","Show HN: I built this notifying device – electronics, code, design, marketing","http:\u002F\u002Fwww.notifon.net","notifon.net","clement87",1396469178,2014,129,57,207,2272,10,"notable","hardware","wireless iot sensor",[23,24,25,26,27],"zigbee","iot sensor","door sensor","notifications","crowdfunding","mixed",-0.197,{"positive":31,"neutral":32,"mixed":33,"critical":34},6,9,1,14,30,{"performance":37,"design":39,"docs":41,"pricing":43,"idea":44,"execution":45},{"positive":33,"critical":38},2,{"positive":40,"critical":38},0,{"positive":33,"critical":42},3,{"positive":40,"critical":42},{"positive":33,"critical":38},{"positive":33,"critical":40},[33,40,40,33,33,33,40,33,42,40,33,42,40,40,42,40,33,40,33,42,40,33,47,42,40,42,40,47,33,40,47,40,33,47,33,33,42,42,47,47],5,null,{"problem":50,"audience":48,"pricing":48,"motivation":48,"time_to_build":48,"stack":60,"openness":75,"stage":76,"team_size":77},{"value":51,"source":52,"evidence":53},"Notifies you of real-life events such as a door opening, via sensor nodes and a hub","maker",[54,57],{"id":55,"by":11,"text":56},"7521885","Simple, when you open your door, the Node wakes up during 40ms, transmits at 40mA to the Hub and goes back to sleep consuming less than 1uA. You can calculate the battery life…",{"id":58,"by":11,"text":59},"7519003","I know, it's all about the battery life (about years). The ZigBee chip require only 40mA in transmit and less than 1uA on idle mode... You can't do the same with a WiFi chip, ask…",[61,67],{"value":62,"source":52,"evidence":63},"ZigBee wireless protocol",[64],{"id":65,"by":11,"text":66},"7518956","I use a technology called ZigBee. It's a wireless protocol made for Internet of Things devices. This part represent about 60% of the production cost. This chip is expensive but…",{"value":68,"source":69,"evidence":70},"Xbee modules","commenter",[71],{"id":72,"by":73,"text":74},"7521012","thechut","You've made some interesting choices here. Lots of people here are questioning using a gateway, but I think this is a great choice for what you are doing, and required to get…","unknown","beta","solo",{"praise":79,"objections":94,"requests":133,"questions":156,"alternatives":178},[80,87],{"value":81,"source":69,"evidence":82},"Impressive that one person built the whole product",[83],{"id":84,"by":85,"text":86},"7518829","pdx","That you managed to do everything is impressive, especially given the costs involved in production tooling for plastics. I assume you had to build a large quantity of PCBA's as…",{"value":88,"source":69,"evidence":89},"Long battery life from low-power design",[90],{"id":91,"by":92,"text":93},"7521864","motyar","I really need to understand and learn how it works on such less power. Kudos.",[95,109,116,122],{"value":96,"source":69,"evidence":97},"Too expensive for consumers",[98,102,106],{"id":99,"by":100,"text":101},"7518912","aalpbalkan","This is cool marketing but it is way expensive than I expected. I am not sure pricing is DIY-friendly but you would certainly find people to buy that.",{"id":103,"by":104,"text":105},"7519417","zapt02","I expected this to work through either wifi or a very cheap USB dongle. The price point for a base station with one device should be 49.99 and each additional device should…",{"id":107,"by":104,"text":108},"7519401","I agree this is way too expensive.",{"value":110,"source":69,"evidence":111},"Open\u002Fclosed state detection unclear for magnetic sensors",[112],{"id":113,"by":114,"text":115},"7528589","exodust","Sorry, but just saying \"it can do it\" without explaining how, is not convincing! The magnetic switch in the video - I have used before, and they do not distinguish between \"open\"…",{"value":117,"source":69,"evidence":118},"Limited range compared to alternatives",[119],{"id":120,"by":11,"text":121},"7519560","The key is to get notifications when you're away. BLE don't have a good range (about 10 meters). ZigBee is more like Wifi (about 50\u002F100 meters).",{"value":123,"source":69,"evidence":124},"Website does not explain the product clearly",[125,129],{"id":126,"by":127,"text":128},"7518895","johansch","The web page gives me pretty much absolutely no idea what this product does, except for the abstract \"notify me of things\". How does it do it, how do you interface to it, etc?",{"id":130,"by":131,"text":132},"7519053","namenotrequired","That sounds cool! I do recommend you highlight a few practical use cases, i.e. what benefits does (or will) it provide? Try to lead with why rather than with what. It took me a…",[134,141,149],{"value":135,"source":69,"evidence":136},"Android compatibility",[137],{"id":138,"by":139,"text":140},"7522751","edwhitesell","1) All screenshots are of iPhones, is there Android compatibility? 2) PushingBox only allows login with a Google account. Both of these mean I could never be your customer.",{"value":142,"source":69,"evidence":143},"Use a cheaper radio such as BLE or WiFi",[144,145],{"id":103,"by":104,"text":105},{"id":146,"by":147,"text":148},"7518950","jpwright","Looks great! Out of curiosity, why go with the hub\u002Fnode approach using ZigBee for sending such a small amount of data? There are WiFi modules like TI's CC3000…",{"value":150,"source":69,"evidence":151},"Discreet, paintable design",[152],{"id":153,"by":154,"text":155},"7521525","abcd_f","Congrats, this is an interesting project and props for doing it all on your own! I thought our kind has gone all but extinct these days :) That said, here's a problem from just…",[157,165,172],{"value":158,"source":69,"evidence":159},"Why ZigBee instead of WiFi or BLE",[160,161],{"id":146,"by":147,"text":148},{"id":162,"by":163,"text":164},"7519531","lnanek2","Wow, Amazed someone used ZigBee instead of Bluetooth Low Energy. There's just so many more BLE chips out there and Android and iOS phones are even compatible nowadays.",{"value":166,"source":69,"evidence":167},"FCC compliance",[168],{"id":169,"by":170,"text":171},"7520786","smni","What do you need to do for FCC compliance? Is it all taken care of because you're using ZigBee?",{"value":173,"source":69,"evidence":174},"How the open\u002Fclosed state is detected",[175],{"id":176,"by":114,"text":177},"7521894","How do you know the garage door is \"open\"? If you receive an identical notification whenever the sensor is triggered, the door could be open or closed. With something like a…",[179,186,193,197],{"value":180,"source":69,"evidence":181},"Sen.se",[182],{"id":183,"by":184,"text":185},"7518737","itafroma","Interesting. Seems similar—complete with slightly creepy base station—to Sen.se: https:\u002F\u002Fsen.se\u002Fstore\u002Fcookie\u002F#mother (Though it appears Karotz is a separate thing:…",{"value":187,"source":69,"evidence":188},"Ninja Blocks",[189],{"id":190,"by":191,"text":192},"7519526","barbs","My first thought was that it looked very similar to Ninja Blocks: http:\u002F\u002Fninjablocks.com\u002Fproducts\u002Fninja-blocks-kit",{"value":194,"source":69,"evidence":195},"Electric Imp",[196],{"id":183,"by":184,"text":185},{"value":198,"source":69,"evidence":199},"Karotz",[200],{"id":183,"by":184,"text":185},{"comments":202,"answered":203,"key":204},18,12,[205,208,209],{"id":206,"text":207},"7519116","Thanks for those good recommendations, I think you're so right with the \"notifying object\" words! I think the Indiegogo page is better, I'll merge it with the main website.",{"id":65,"text":66},{"id":210,"text":211},"7519449","Thanks for the reply. This kind of price can be reach using Bluetooth Low Energy. Those chips are really cheap but as you might know, the range is too low.",{"commenters":213,"max_depth":31,"maker_replies":202,"first_comment_mins":214,"lifespan_hours":215},32,21,111,[217,219,223,226,228,230,232,234,236,238,239,241,244,246,250,251,254,255,259,261,264,266,267,271,272,275,276,278,281,286,288,289,291,294,297,299,302,306,309,313,316,318,320,323,327,329,334,337,340,344,347,349,351,355,357,359,360],[72,40,33,218,73,40],"project\u002Fcritical\u002Fperformance",[220,40,40,221,222,40],"7522145","commenter\u002Fneutral\u002Fnone","johnm1019",[224,40,40,221,225,40],"7522864","HeyLaughingBoy",[227,40,40,221,73,40],"7524660",[153,33,33,229,154,40],"project\u002Fcritical\u002Fdesign",[130,38,33,231,131,40],"project\u002Fcritical\u002Fdocs",[206,38,40,233,11,33],"maker\u002Fneutral\u002Fdocs",[99,42,33,235,100,40],"project\u002Fcritical\u002Fpricing",[65,42,40,237,11,33],"project\u002Fneutral\u002Fpricing",[103,42,33,235,104,40],[210,42,40,240,11,33],"project\u002Fneutral\u002Fperformance",[242,42,42,243,104,40],"7520318","project\u002Fneutral\u002Fidea",[245,42,40,240,11,33],"7521793",[247,42,40,248,249,40],"7527097","other\u002Fneutral\u002Fpricing","tonyarkles",[107,42,33,235,104,40],[146,252,42,253,147,40],4,"project\u002Fneutral\u002Fdesign",[58,252,40,240,11,33],[256,252,40,257,258,40],"7519377","other\u002Fneutral\u002Fperformance","swamp40",[260,252,40,240,11,33],"7519403",[262,252,42,253,263,40],"7521403","mkesper",[183,47,40,265,184,40],"other\u002Fneutral\u002Fidea",[190,47,40,265,191,40],[268,47,33,269,270,40],"7519765","project\u002Fcritical\u002Fidea","ChuckMcM",[176,31,33,269,114,40],[273,31,40,274,11,33],"7521903","project\u002Fpositive\u002Fperformance",[113,31,33,218,114,40],[277,31,40,240,11,33],"7530109",[279,31,42,280,114,40],"7545798","project\u002Fmixed\u002Fperformance",[282,283,40,284,285,40],"7520891",7,"other\u002Fneutral\u002Fnone","dmritard96",[162,287,33,229,163,40],8,[120,287,40,240,11,33],[84,32,47,290,85,40],"maker\u002Fpositive\u002Fexecution",[292,32,40,293,11,33],"7518902","maker\u002Fneutral\u002Fexecution",[295,32,42,293,296,40],"7519234","mik3y",[298,32,40,293,11,33],"7519362",[300,32,42,293,301,40],"7520927","zrgiu_",[303,18,40,304,305,40],"7518842","other\u002Fneutral\u002Fdesign","sunkay",[307,18,40,308,11,33],"7518909","maker\u002Fneutral\u002Fdesign",[310,311,47,312,225,40],"7522228",11,"project\u002Fpositive\u002Fidea",[314,203,42,253,315,40],"7520485","dantiberian",[126,317,33,231,127,40],13,[319,317,40,233,11,33],"7518927",[321,317,42,322,127,40],"7527154","project\u002Fneutral\u002Fdocs",[324,34,47,325,326,40],"7519467","project\u002Fpositive\u002Fdocs","erikano",[328,34,40,233,11,33],"7519499",[330,331,33,332,333,40],"7519488",15,"maker\u002Fcritical\u002Fnone","Pyrodogg",[335,331,40,336,11,33],"7519538","maker\u002Fneutral\u002Fnone",[338,331,47,339,333,40],"7519999","maker\u002Fpositive\u002Fnone",[341,342,33,231,343,40],"7520209",16,"Balgair",[138,345,33,346,139,40],17,"project\u002Fcritical\u002Fnone",[348,345,40,336,11,33],"7522825",[169,202,42,350,170,40],"project\u002Fneutral\u002Fnone",[352,353,42,243,354,40],"7519039",19,"viggity",[356,353,40,243,11,33],"7519078",[91,358,47,274,92,40],20,[55,358,40,240,11,33],[361,214,47,362,363,40],"7519664","project\u002Fpositive\u002Fnone","phmagic",[],[366,371,376,381,386,391],{"id":367,"name":368,"points":369,"category":370},"7487935","VoxelQuest",435,"games",{"id":372,"name":373,"points":374,"category":375},"7501516","SlideRule",368,"learning_science",{"id":377,"name":378,"points":379,"category":380},"7508443","Deafalarm",170,"consumer_social",{"id":382,"name":383,"points":384,"category":385},"7502999","GridList",92,"dev_tools",{"id":387,"name":388,"points":389,"category":390},"7501891","ffjson",83,"languages",{"id":392,"name":393,"points":394,"category":395},"7491003","Route Optimization API",70,"web_saas",false,"v2",{"id":399,"name":5,"line":6,"ai":396,"cat":20,"year":13,"points":14,"comments":15,"rec":28,"s":400,"top":18,"kw":401,"maker":11,"domain":10,"tier":19,"attempts":40,"strip":402,"url":9,"mix":403,"praise":81,"objection":96,"sub":21},7518564,-0.2,[23,24,25,26,27],"1001110130130030101301530305105015113355",[31,32,33,34],1793990904251]