[{"data":1,"prerenderedAt":587},["ShallowReactive",2],{"project-25566132":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":29,"sentiment":30,"stance_mix":31,"scored_comments":35,"aspects":36,"strip":46,"post_text":49,"what":50,"said":97,"maker_in_thread":171,"shape":179,"grid":184,"attempts":547,"same_week":548,"maker_shows":34,"maker_hidden":579,"reader_version":580,"card":581},"25566132","micro-displays","Raspberry Pi 400 with a $2 IPS 240x240 micro display","title","Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display","https:\u002F\u002Fgithub.com\u002Figbit\u002Fmicro-displays\u002Fblob\u002Fmain\u002FREADME.md","github.com","sgroppino",1609209566,2020,357,129,103,3028,4,"legend","hardware","embedded displays","other",[24,25,26,27,28],"raspberry pi","spi display","st7789","tiny lcd","ips display","curious",0.137,{"positive":32,"neutral":33,"mixed":34,"critical":18},8,26,1,39,{"idea":37,"design":40,"performance":42,"execution":43,"pricing":44,"docs":45},{"positive":38,"critical":39},6,0,{"positive":39,"critical":41},2,{"positive":39,"critical":34},{"positive":39,"critical":34},{"positive":39,"critical":39},{"positive":34,"critical":39},[39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,47,47,18,48,47,39,47,47,47,47,47,47,34,39,47,47,48,39,39,39,48,18,34,48],3,5,null,{"problem":51,"audience":49,"pricing":61,"motivation":67,"time_to_build":49,"stack":75,"openness":96,"stage":96,"team_size":96},{"value":52,"source":53,"evidence":54},"Using cheap tiny SPI displays as small screens for a Raspberry Pi, e.g. showing IP addresses or sysinfo","maker",[55,58],{"id":56,"by":11,"text":57},"25566456","Originally I was just using it to display the IP addresses after reboot on a smaller 0.96\" 80x160. Then a screen shot... then zoom. I'm thinking more about some QR code with…",{"id":59,"by":11,"text":60},"25569905","Added more info on displays and code for 80x160.",{"value":62,"source":53,"evidence":63},"About $2 per display from AliExpress",[64],{"id":65,"by":11,"text":66},"25566634","I got them from AliExpress - Google for ST7789 240 IPS TFT",{"value":68,"source":53,"evidence":69},"Boredom during lockdown, and wanting a small display for the Pi",[70,74],{"id":71,"by":72,"text":73},"25567402","godot","A bit off-topic but related to the intro in this readme.. > Why? > I'm super bored in lockdown. Add a Raspberry Pi 400 and a few tiny displays... I feel like there are two…",{"id":56,"by":11,"text":57},[76,82,90],{"value":77,"source":53,"evidence":78},"Raspberry Pi 400",[79,81],{"id":80},"post",{"id":71,"by":72,"text":73},{"value":83,"source":84,"evidence":85},"Python","commenter",[86],{"id":87,"by":88,"text":89},"25566463","dmitrygr","This is a strange way to do this. Linux already supports such displays to be used as a real framebuffer. Why all the python and screenshotting?",{"value":91,"source":53,"evidence":92},"ST7789 display driver",[93],{"id":94,"by":11,"text":95},"25566503","Driver: ST7789 Interface: SPI Display color: RGB, 65K color Resolution: 240x240 Backlight: LED Operating voltage: 3.3V","unknown",{"praise":98,"objections":121,"requests":135,"questions":150,"alternatives":162},[99,114],{"value":100,"source":84,"evidence":101},"Cheap, interesting small displays with many applications",[102,106,110],{"id":103,"by":104,"text":105},"25568131","utopcell","These 240x240 IPS displays are awesome and dirt-cheap. The best \"application\" I've seen for them is a tiny retro game console [1]. [1] https:\u002F\u002Fwww.funkey-project.com\u002F",{"id":107,"by":108,"text":109},"25566392","ISL","There's a lotta cool\u002Finteresting applications for a tiny display like that. Thanks for sharing. :).",{"id":111,"by":112,"text":113},"25566689","sircastor","This seems really great for times when I want to boot up a PI but don’t want to bother with finding a display and PSU for that display, and I don’t want to unplug my computers…",{"value":115,"source":84,"evidence":116},"Good write-up with a clear why in the README",[117],{"id":118,"by":119,"text":120},"25569682","Simplicitas","Kudos for the WHY in the README! Love it when a hacking adventure gives us a raison d'etre, and a well-deserved one too.",[122,128],{"value":123,"source":53,"evidence":124},"Display lacks chip select pin, so multiple SPI screens are hard to control",[125],{"id":126,"by":11,"text":127},"25573847","This is a good question. You should be able to control multiple SPI devices at the same time, but that requires the CSX\u002FCS (\"Chip Select\") pin to be present. The model I bought…",{"value":129,"source":84,"evidence":130},"Tearing noted in video demos",[131],{"id":132,"by":133,"text":134},"25569446","mireq2","Really cool display even if it has problems with tearing. I played around with that display a bit - https:\u002F\u002Fyoutu.be\u002F8S1BXnx-vLE (STM32, 60+ fps), https:\u002F\u002Fyoutu.be\u002FWql4WTpPrWs…",[136,143],{"value":137,"source":84,"evidence":138},"Add contact and donation info to the project",[139],{"id":140,"by":141,"text":142},"25580891","ellis0n","Good work! My first 240x240 display was a Palm Treo 750 and 320x240 apps were unusable because 80 pixels were out of sight, haha Add your contacts, social links and donation button",{"value":144,"source":84,"evidence":145},"Add an affiliate link for the screen",[146],{"id":147,"by":148,"text":149},"25567581","Just1689","You should add an affiliate link for the screen",[151,158],{"value":152,"source":84,"evidence":153},"Where to get the display for 2 USD",[154],{"id":155,"by":156,"text":157},"25566555","quanto","where would I get the display for 2 USD?",{"value":159,"source":84,"evidence":160},"Why use python and screenshots instead of the Linux framebuffer",[161],{"id":87,"by":88,"text":89},[163,167],{"value":164,"source":84,"evidence":165},"Linux framebuffer support for such displays",[166],{"id":87,"by":88,"text":89},{"value":168,"source":84,"evidence":169},"FunKey retro handheld console",[170],{"id":103,"by":104,"text":105},{"comments":172,"answered":38,"key":173},7,[174,175,176],{"id":56,"text":57},{"id":126,"text":127},{"id":177,"text":178},"25566519","Couldn't make it work with those 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