{"id":300,"date":"2021-10-05T16:22:04","date_gmt":"2021-10-05T16:22:04","guid":{"rendered":"https:\/\/uni.hi.is\/martin\/?p=300"},"modified":"2025-02-03T13:49:50","modified_gmt":"2025-02-03T13:49:50","slug":"innkaupalisti-fyrir-microbit-taekjaforritun","status":"publish","type":"post","link":"https:\/\/uni.hi.is\/martin\/2021\/10\/05\/innkaupalisti-fyrir-microbit-taekjaforritun\/","title":{"rendered":"Innkaupalisti fyrir micro:bit t\u00e6kjaforritun"},"content":{"rendered":"<p>[ENN \u00cd VINNSLU. BIRTI FRUMDR\u00d6GIN TIL A\u00d0 GETA DEILT ME\u00d0 KENNARANUM SEM \u00c9G LOFA\u00d0I \u00deESSU \u00cd DAG...]<\/p>\n<figure id=\"attachment_308\" aria-describedby=\"caption-attachment-308\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"https:\/\/uni.hi.is\/martin\/2021\/10\/05\/innkaupalisti-fyrir-microbit-taekjaforritun\/microbit-og-ihlutir\/\" rel=\"attachment wp-att-308\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-308 size-medium\" src=\"https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-ihlutir-300x200.jpeg\" alt=\"Yfirlitsmynd yfir b\u00fana\u00f0 til t\u00e6kjaforritunar\" width=\"300\" height=\"200\" srcset=\"https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-ihlutir-300x200.jpeg 300w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-ihlutir-1024x682.jpeg 1024w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-ihlutir-768x512.jpeg 768w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-ihlutir-1536x1024.jpeg 1536w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-ihlutir.jpeg 1937w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-308\" class=\"wp-caption-text\">B\u00fana\u00f0ur til t\u00e6kjaforritunar<\/figcaption><\/figure>\n<p>Undanfarin misseri h\u00f6fum vi\u00f0 veri\u00f0 a\u00f0 keyra og \u00fer\u00f3a t\u00e6kjaforritunarsmi\u00f0jur. Upphaflega notu\u00f0umst vi\u00f0 vi\u00f0 Raspberry Pi t\u00f6lvur en \u00feegar vi\u00f0 f\u00f3rum a\u00f0 hafa a\u00f0gang a\u00f0 Chromebook t\u00f6lvum fluttum vi\u00f0 f\u00f3kusinn yfir \u00e1 micro:bit. \u00de\u00e6r henta s\u00e9rstaklega vel \u00ed sk\u00f3lastarf \u00fear sem \u00fer\u00f6skuldurinn er mj\u00f6g l\u00e1gur, \u00feaki\u00f0 h\u00e1tt, og v\u00edtt til veggja.<\/p>\n<p>Byrjendur geta byrja\u00f0 me\u00f0 p\u00faslforritunarvi\u00f0m\u00f3t \u00e1 \u00edslensku og fikra\u00f0 sig svo yfir \u00ed JavaScript e\u00f0a Python \u00ed sama ritli. Eins b\u00fd\u00f0ur micro:bit t\u00f6lvan upp \u00e1 nokku\u00f0 klass\u00edska forritun og t\u00f6lvuleikjager\u00f0, en einnig er h\u00e6gt a\u00f0 nota hana til a\u00f0 b\u00faa til gagnvirkni \u00ed eitthva\u00f0 f\u00f6ndur, sm\u00ed\u00f0i e\u00f0a text\u00edlverkefni.<\/p>\n<p>Til \u00feess \u00fearf \u00fe\u00f3 einhvern l\u00e1gmarksb\u00fana\u00f0 og h\u00e9r fylgir listi yfir m\u00edna r\u00e1\u00f0leggingu fyrir sex h\u00f3pa smi\u00f0ju. \u00cd henni eru micro:bit t\u00f6lvur, tengibretti, perur og m\u00f3torar, og v\u00edrar til a\u00f0 tengja \u00feetta allt saman. A\u00f0 ne\u00f0an eru athugasemdir vi\u00f0 hvert og eitt.<\/p>\n<ul>\n<li>10 stk. micro:bit t\u00f6lvur (<a href=\"https:\/\/a4.is\/mms\">MMS<\/a>, <a href=\"https:\/\/shop.pimoroni.com\/products\/bbc-micro-bit-club-10-pack\">Pimoroni<\/a>, <a href=\"https:\/\/www.adafruit.com\/product\/4833\">Adafruit<\/a>)<\/li>\n<li>8 stk. 4tronix servo:bit (<a href=\"https:\/\/shop.4tronix.co.uk\/products\/servobit\">4tronix<\/a>)<\/li>\n<li>4 stk. Short Feather Male Headers - 12-pin and 16-pin Male Header Set (<a href=\"https:\/\/shop.pimoroni.com\/products\/short-feather-male-headers-12-pin-and-16-pin-male-header-set\">Pimoroni<\/a>, <a href=\"https:\/\/www.adafruit.com\/product\/3009\">Adafruit<\/a>)<\/li>\n<li>6 stk. 1m micro USB kaplar (<a href=\"https:\/\/shop.pimoroni.com\/products\/usb-a-to-microb-cable-red?variant=32065140746\">Pimoroni<\/a>, <a href=\"https:\/\/www.amazon.com\/dp\/B09DQ3R37W\/\">Amazon<\/a>)<\/li>\n<li>20 stk. servo m\u00f3torar (<a href=\"https:\/\/shop.pimoroni.com\/products\/micro-angular-servo?variant=40982590849107\">Pimoroni<\/a>, <a href=\"https:\/\/www.adafruit.com\/product\/169\">Adafruit<\/a>, <a href=\"https:\/\/www.amazon.com\/Hosyond-Helicopter-Airplane-Control-Arduino\/dp\/B09GFN98X9\/\">Amazon<\/a>)<\/li>\n<li>100+ stk. lj\u00f3stvistar (LED perur) f\u00e1st hj\u00e1 fj\u00f6lm\u00f6rgum s\u00f6lua\u00f0ilum hj\u00e1 AliExpress:\n<ul>\n<li>Niuketat: <a href=\"https:\/\/niuketat-elec.aliexpress.com\/store\/1805090\/pages\/all-items.html?productGroupId=507205008\">lita\u00f0ir hausar 100 stk<\/a> (ca 250-300 kr. \/m sendingarkostna\u00f0i [feb. 2025])<\/li>\n<li>KY WIN ROBOT Store <a href=\"https:\/\/www.aliexpress.com\/item\/32848810276.html\">lita\u00f0ir hausar 100 stk<\/a> (ca 250-300 kr. \/m sendingarkostna\u00f0i [feb. 2025])<\/li>\n<li>Chanzon Official store: <a href=\"https:\/\/www.aliexpress.com\/item\/1005001382143715.html\">lita\u00f0ir og gl\u00e6rir hausar<\/a> (640 kr. \/m sendingarkostna\u00f0i [feb. 2025])<\/li>\n<li>Chanzon Official Store: <a href=\"https:\/\/www.aliexpress.com\/item\/1936218827.html\">gl\u00e6rir hausar margir litir<\/a> ($15 fyrir fj\u00f3ra liti)<\/li>\n<\/ul>\n<\/li>\n<li>100+ stk Vi\u00f0n\u00e1m (um 300 <span class=\"Eq0J8 LrzXr kno-fv\">\u03a9, <a href=\"https:\/\/www.adafruit.com\/product\/2781\">Adafruit<\/a>, AliExpress (kaupa \u00feetta bara af sama og lj\u00f3stvistana, t.d. <a href=\"https:\/\/www.aliexpress.com\/item\/1005002388714967.html\">Chanzon<\/a>), <\/span>V\u00edsindasmi\u00f0junni)<\/li>\n<li>8mm koparl\u00edmband (<a href=\"https:\/\/www.aliexpress.com\/item\/1005002663238750.html\">AliExpress<\/a>, ca 400 kr.\/stk. e\u00f0a 2600 kr.\/6 stk)<\/li>\n<li>Kr\u00f3k\u00f3d\u00edlaklemma \u00ed kvk-tengi (<a href=\"https:\/\/www.aliexpress.com\/item\/1005001859526016.html\">AliExpress<\/a>, <a href=\"https:\/\/www.amazon.com\/gp\/product\/B08M5L6GSH\/ref=ppx_yo_dt_b_asin_title_o00_s00\">Amazon<\/a>, a\u00f0eins <a href=\"https:\/\/www.aliexpress.com\/item\/1005001726257391.html\">d\u00fdrari af AliExpress<\/a> en me\u00f0 s\u00edlikon einangrun)<\/li>\n<li>Kr\u00f3k\u00f3d\u00edlaklemma \u00ed kr\u00f3k\u00f3d\u00edlaklemmu (<a href=\"https:\/\/www.aliexpress.com\/item\/32913032927.html\">AliExpress<\/a>, <a href=\"https:\/\/www.amazon.com\/Goupchn-Alligator-Electrical-Double-Crocodile\/dp\/B099HV3SYR\">Amazon<\/a>)<\/li>\n<\/ul>\n<p>Valkv\u00e6mt:<\/p>\n<ul>\n<li>60 stk. kvk-kvk tengi. \u00deessi koma \u00ed settum af ca. 10 tengjum og \u00ed nokkrum lengdum.<\/li>\n<li>\n<figure id=\"attachment_307\" aria-describedby=\"caption-attachment-307\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"https:\/\/uni.hi.is\/martin\/2021\/10\/05\/innkaupalisti-fyrir-microbit-taekjaforritun\/orkubankar\/\" rel=\"attachment wp-att-307\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-307 size-medium\" src=\"https:\/\/uni.hi.is\/martin\/files\/2021\/10\/orkubankar-300x200.jpeg\" alt=\"D\u00e6mi um aflgjafa\" width=\"300\" height=\"200\" srcset=\"https:\/\/uni.hi.is\/martin\/files\/2021\/10\/orkubankar-300x200.jpeg 300w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/orkubankar-1024x682.jpeg 1024w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/orkubankar-768x512.jpeg 768w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/orkubankar-1536x1024.jpeg 1536w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/orkubankar.jpeg 1937w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-307\" class=\"wp-caption-text\">D\u00e6mi um aflgjafa: 3 V rafhl\u00f6\u00f0ubox og 5 V orkubankar<\/figcaption><\/figure>\n<p>Orkubankar til a\u00f0 geta keyrt micro:bit-ana, brettin, m\u00f3torana og allt \u00fea\u00f0 \u00e1n \u00feess a\u00f0 vera tengt vi\u00f0 t\u00f6lvu. \u00dea\u00f0 \u00fearf alls ekki st\u00f3ra. Bara \u00feessir litlu 1000 mAh bankar v\u00e6ru f\u00ednir (og betra fyrir \u00feetta verkefni a\u00f0 hafa \u00fe\u00e1 minni en st\u00e6rri). Hef hins vegar ekki fundi\u00f0 neina \u00f3d\u00fdra og \u00fea\u00f0 getur veri\u00f0 sm\u00e1 vesen a\u00f0 flytja inn rafhl\u00f6\u00f0ur.<\/li>\n<\/ul>\n<h2>Athugasemdir<\/h2>\n<h3>micro:bit t\u00f6lvur<\/h3>\n<figure id=\"attachment_306\" aria-describedby=\"caption-attachment-306\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"https:\/\/uni.hi.is\/martin\/2021\/10\/05\/innkaupalisti-fyrir-microbit-taekjaforritun\/microbit-og-servobit\/\" rel=\"attachment wp-att-306\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-306 size-medium\" src=\"https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-servobit-300x200.jpeg\" alt=\"Microbit t\u00f6lvur og servobit bretti\" width=\"300\" height=\"200\" srcset=\"https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-servobit-300x200.jpeg 300w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-servobit-1024x682.jpeg 1024w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-servobit-768x512.jpeg 768w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-servobit-1536x1024.jpeg 1536w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/microbit-og-servobit.jpeg 1937w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-306\" class=\"wp-caption-text\">micro:bit t\u00f6lvur og servo:bit bretti<\/figcaption><\/figure>\n<p>\u00deessar eru l\u00edklega til \u00ed sk\u00f3lunum. \u00de\u00e6r f\u00e1st \u00ed 10 stykkja bekkjarsettum og a\u00f0 m\u00e9r skilst fr\u00edtt hj\u00e1 MMS. Annars er h\u00e6gt a\u00f0 kaupa \u00feau a\u00f0 utan.<\/p>\n<p>T\u00f6lvurnar \u00feola \u00fdmislegt en \u00fea\u00f0 er alltaf g\u00f3\u00f0 hugmynd a\u00f0 eiga nokkrar auka ef eitthva\u00f0 kemur upp\u00e1 sem ekki borgar sig a\u00f0 ey\u00f0a t\u00edma nemandans \u00ed a\u00f0 leysa. \u00dea\u00f0 n\u00e6gir \u00fev\u00ed a\u00f0 vera me\u00f0 6 micro:bit-a, en \u00e9g m\u00e6li me\u00f0 \u00fev\u00ed a\u00f0 mi\u00f0a bara vi\u00f0 10 t\u00f6lvu sett.<\/p>\n<h3>4tronix servo:bit<\/h3>\n<p>\u00deetta eru hjartastykki t\u00e6kjaforritunarinnar. \u00dea\u00f0 eru til \u00fdmsar \u00fatg\u00e1fur af \u00e1l\u00edka brettum en \u00fe\u00e6r eiga \u00fea\u00f0 allar sameiginlegt a\u00f0 \u00fea\u00f0 er h\u00e6gt a\u00f0 tengja micro:bit t\u00f6lvu vi\u00f0 bretti\u00f0 auk ja\u00f0art\u00e6kja eins og servo m\u00f3tora og lj\u00f3stvista. \u00dea\u00f0 einfaldar mj\u00f6g alla tengivinnu.<\/p>\n<p>H\u00e6gt er a\u00f0 f\u00e1 \u00f6nnur bretti sem eru enn hr\u00e1rri, og svo \u00f6nnur sem eru meira \"plug-and-play\". \u00deetta \u00feykir m\u00e9r halda g\u00f3\u00f0u jafnv\u00e6gi \u00e1 milli sveigjanleika og einfaldleika.<\/p>\n<p>A\u00f0rar \u00fatg\u00e1fur eru m.a.:<\/p>\n<ul>\n<li>g\u00f6mlu brettin sem \u00e9g nota\u00f0i<\/li>\n<li>rosa fans\u00ed plug-and-play brettin<\/li>\n<\/ul>\n<p>R\u00e9tt eins og me\u00f0 micro:bit t\u00f6lvunar eru \u00feessi bretti nokku\u00f0 r\u00f3b\u00fast, en \u00fea\u00f0 mundi ekki ska\u00f0a a\u00f0 eiga einhver auka ef eitthva\u00f0 kemur upp\u00e1. M\u00e6li \u00fev\u00ed me\u00f0 8 brettum fyrir 6 h\u00f3pa.<\/p>\n<p>Auka t\u00e6ki m\u00e1 svo n\u00fdta til a\u00f0 lofa einhverjum verkefnum a\u00f0 lifa eitthva\u00f0 \u00e1fram sem s\u00fdnid\u00e6mi, \u00f6\u00f0rum til innbl\u00e1sturs.<\/p>\n<h3>Male Headers<\/h3>\n<p>4tronix bretti\u00f0 kemur me\u00f0 pinnum til a\u00f0 tengja servo m\u00f3tora \u00ed. Til a\u00f0 komast \u00ed fleiri pinna til a\u00f0 tengja lj\u00f3stvista, skynjara e\u00f0a anna\u00f0 vi\u00f0 micro:bitann \u00fearf a\u00f0 komast \u00ed pinna sem fylgja ekki me\u00f0 brettinu, en h\u00e6gt er a\u00f0 b\u00e6ta vi\u00f0. \u00de\u00e1 \u00fearf a\u00f0 l\u00f3\u00f0a vi\u00f0 bretti\u00f0 sem er nokku\u00f0 einfalt ef \u00fei\u00f0 eru\u00f0 me\u00f0 l\u00f3\u00f0bolta. Ef ekki geti\u00f0 \u00fei\u00f0 k\u00edkt til m\u00edn \u00ed V\u00edsindasmi\u00f0junni og gert \u00feetta sj\u00e1lf, me\u00f0 hj\u00e1lp, e\u00f0a fengi\u00f0 \u00feetta gert fyrir ykkur \u00ed skiptum fyrir myndir og reynslus\u00f6gu af t\u00e6kjaforritun \u00ed sk\u00f3lanum hj\u00e1 ykkur.<\/p>\n<p>\u00c1 hverju servo:bit bretti \u00fearf 12 pinna renning. \u00deessir hj\u00e1 Pimoroni eru par af 12 og 16 pinnum svo \u00fea\u00f0 dyg\u00f0u 3 sl\u00edk fyrir 6 bretti.<\/p>\n<h3>USB kaplar<\/h3>\n<p>Me\u00f0 micro:bit t\u00f6lvunum fylgir vanalega micro-USB kapall, en hann er \u00ed styttra lagi. \u00dea\u00f0 hj\u00e1lpar miki\u00f0 a\u00f0 geta veri\u00f0 me\u00f0 micro:bit t\u00f6lvuna \u00ed nokkurri fjarl\u00e6g\u00f0 fr\u00e1 \u00feeirri sem forrita\u00f0 er \u00e1, og m\u00e9r \u00feykir 1 m nokku\u00f0 gott.<\/p>\n<h3>Servo m\u00f3torar<\/h3>\n<figure id=\"attachment_304\" aria-describedby=\"caption-attachment-304\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"https:\/\/uni.hi.is\/martin\/2021\/10\/05\/innkaupalisti-fyrir-microbit-taekjaforritun\/servo-motorar-og-ljostvistar\/\" rel=\"attachment wp-att-304\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-304 size-medium\" src=\"https:\/\/uni.hi.is\/martin\/files\/2021\/10\/servo-motorar-og-ljostvistar-300x200.jpeg\" alt=\"Servo m\u00f3torar og lj\u00f3stvistar\" width=\"300\" height=\"200\" srcset=\"https:\/\/uni.hi.is\/martin\/files\/2021\/10\/servo-motorar-og-ljostvistar-300x200.jpeg 300w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/servo-motorar-og-ljostvistar-1024x682.jpeg 1024w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/servo-motorar-og-ljostvistar-768x512.jpeg 768w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/servo-motorar-og-ljostvistar-1536x1024.jpeg 1536w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/servo-motorar-og-ljostvistar.jpeg 1937w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-304\" class=\"wp-caption-text\">Servo m\u00f3torar og lj\u00f3stvistar.<\/figcaption><\/figure>\n<p>Servo m\u00f3torar eru m\u00f3torar sem stefna \u00ed \u00fe\u00e1 \u00e1tt sem \u00feeim er sagt a\u00f0 stefna \u00ed (\u00f6fugt vi\u00f0 DC m\u00f3tora sem sn\u00faast bara endalaust, og stepper m\u00f3torar sem sn\u00faast \u00e1kve\u00f0i\u00f0 margar gr\u00e1\u00f0ur \u00far hring). \u00deeir eru til \u00ed m\u00f6rgum st\u00e6r\u00f0um og ger\u00f0um, en \u00feeir sem kalla\u00f0ir eru micro-servo eru algengir og \u00f3d\u00fdrir. \u00dea\u00f0 er h\u00e6gt a\u00f0 f\u00e1 d\u00fdrari \u00fatg\u00e1fur me\u00f0 m\u00e1lmg\u00edrum fyrir verkefni sem krefst meira afls, en fyrir \u00fea\u00f0 sem nemendurnir eru a\u00f0 nota \u00feetta \u00ed eru \u00feessir litlu, bl\u00e1u me\u00f0 plastg\u00edrunum fyllilega n\u00f3g.<\/p>\n<p>Reyndar eru til \u00fatg\u00e1fur af \u00feessum m\u00f3torum sem kallast \u201econtinuous servo\u201c en \u00feeim hefur veri\u00f0 breytt \u00feannig a\u00f0 \u00feeir sn\u00faast \u00ed heilan hring. Hra\u00f0inn stillist af st\u00f6\u00f0ustillingu servo-m\u00f3torsins \u00feannig a\u00f0 ef venjulegum servo m\u00f3tor v\u00e6ri beint beint fram (\u00ed 90\u00b0 st\u00f6\u00f0u) v\u00e6ri continuous servo kyrr. Ef servo m\u00f3tor v\u00e6ri beint til vinstri (0\u02da) sn\u00e9rist continous servo \u00e1 fullri fer\u00f0 rangs\u00e6lis, og samb\u00e6rilegt fyrir hina \u00e1ttina.<\/p>\n<h3>Lj\u00f3stvistar<\/h3>\n<p>Lj\u00f3stvistar n\u00fdstast \u00ed \u00e1kaflega margt anna\u00f0 en bara t\u00e6kjaforritun, svo \u00fea\u00f0 er ekkert \u00f3skynsamlegt a\u00f0 eiga bara alveg g\u00f3\u00f0an slatta af \u00feeim. \u00deetta er einnig hr\u00e6\u00f3d\u00fdrt \u00e1 AliExpress. \u00cd listanum a\u00f0 ofan bendi \u00e9g \u00e1 nokkra s\u00f6lua\u00f0ila. \u00c9g \u00feekki ekki muninn \u00e1 \u00feeim, og hef ekki lent \u00e1 byrgja me\u00f0 sl\u00e6ma v\u00f6ru. Hef hins vegar heyrt af \u00f6\u00f0ru f\u00f3lki sem lendir \u00ed \u00fev\u00ed a\u00f0 hluti lj\u00f3stvistanna er bila\u00f0ur.<\/p>\n<p>\u00dea\u00f0 v\u00e6ri verulega vel \u00feegi\u00f0 ef f\u00f3lk getur deilt reynslu sinni af \u00feessum birgjum. Chanzon er d\u00fdrastur (samt engir st\u00f3rir fj\u00e1rmunir) og l\u00edklegast \u00e1rei\u00f0anlegastur, en hinir eru \u00fea\u00f0 miki\u00f0 \u00f3d\u00fdrari a\u00f0 \u00fea\u00f0 borgar sig alveg a\u00f0 5% peranna virki ekki; \u00fe\u00e6r eru hvort e\u00f0 er au\u00f0velt a\u00f0 pr\u00f3fa \u00e1\u00f0ur en \u00fe\u00e6r eru nota\u00f0ar.<\/p>\n<h3>Vi\u00f0n\u00e1m<\/h3>\n<p>\u00c9g hef aldrei s\u00e9\u00f0 micro:bit, Raspberry Pi, e\u00f0a a\u00f0ra \u00e1l\u00edka t\u00f6lvu skemmast af \u00fev\u00ed a\u00f0 \u00fea\u00f0 gleymdist a\u00f0 nota vi\u00f0n\u00e1m. \u00de\u00f3 er sagt a\u00f0 \u00fea\u00f0 eigi alltaf a\u00f0 ra\u00f0tengja vi\u00f0n\u00e1m vi\u00f0 lj\u00f3stvist til a\u00f0 koma \u00ed veg fyrir a\u00f0 \u00fea\u00f0 fl\u00e6\u00f0i um hann meiri straumur en t\u00f6lvan r\u00e1\u00f0i vi\u00f0. \u00dea\u00f0 er yfirleitt mi\u00f0a\u00f0 vi\u00f0 300 e\u00f0a 330 \u03a9, en \u00fea\u00f0 m\u00e1 alveg fara upp \u00ed 470 \u03a9 \u00e1n \u00feess a\u00f0 \u00fea\u00f0 trufli neitt a\u00f0 r\u00e1\u00f0i.<\/p>\n<p>\u00dev\u00ed \u00e6tti a\u00f0 ra\u00f0tengja vi\u00f0n\u00e1m vi\u00f0 hvern \u00feann lj\u00f3stvist sem tengdur er vi\u00f0 micro:bit. Vi\u00f0n\u00e1m eru, l\u00edkt og lj\u00f3stvistarnir, \u00f3d\u00fdr. St\u00e6rsti kostna\u00f0urinn er sendingarkostna\u00f0urinn, og innflutnings- og \u00farvinnslugj\u00f6ld. \u00dev\u00ed er f\u00ednt a\u00f0 kaupa 100-400 stykki og helst a\u00f0 kaupa \u00feetta me\u00f0 lj\u00f3stvistunum til a\u00f0 spara s\u00e9r \u00f3\u00fearfa \u00farvinnslugj\u00f6ld, en \u00feetta eru svosum bara einhverjir \u00fe\u00fasundkallar og s\u00fdnir hva\u00f0 \u00feetta er \u00ed raun \u00f3d\u00fdrt.<\/p>\n<h3>Koparl\u00edmband<a href=\"https:\/\/uni.hi.is\/martin\/2021\/10\/05\/innkaupalisti-fyrir-microbit-taekjaforritun\/leidarar\/\" rel=\"attachment wp-att-305\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-305 size-medium\" src=\"https:\/\/uni.hi.is\/martin\/files\/2021\/10\/leidarar-300x200.jpeg\" alt=\"Yfirlit yfir alls kyns tengiv\u00edra og -bor\u00f0a\" width=\"300\" height=\"200\" srcset=\"https:\/\/uni.hi.is\/martin\/files\/2021\/10\/leidarar-300x200.jpeg 300w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/leidarar-1024x682.jpeg 1024w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/leidarar-768x512.jpeg 768w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/leidarar-1536x1024.jpeg 1536w, https:\/\/uni.hi.is\/martin\/files\/2021\/10\/leidarar.jpeg 1937w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/h3>\n<p>L\u00edkt og me\u00f0 lj\u00f3stvistana m\u00e1 nota \u00feetta \u00ed \u00fdmislegt anna\u00f0, l\u00edkt og <a href=\"https:\/\/visindasmidjan.hi.is\/verkefni\/leikur_ad_rafmagni\/pappirsrafrasir\">papp\u00edrsrafr\u00e1sir<\/a>. \u00deetta er hins vegar ekki alveg jafn hr\u00e6\u00f3d\u00fdrt, en \u00fe\u00f3 ekki neinir st\u00f3rir fj\u00e1rmunir. Athugi\u00f0 a\u00f0 r\u00fallurnar eru mislangar ef \u00fei\u00f0 \u00e6tli\u00f0 a\u00f0 bera saman ver\u00f0 \u00f3l\u00edkra s\u00f6lua\u00f0ila.<\/p>\n<h3>Kr\u00f3k\u00f3d\u00edlaklemma \u00ed kvk-tengi<\/h3>\n<p>Kr\u00f3k\u00f3d\u00edlaklemmur eru vo\u00f0alega \u00fe\u00e6gilegar fyrir einfaldar og flj\u00f3tlegar tengingar. Til a\u00f0 tengja vi\u00f0 servo:bit bretti\u00f0 \u00fearf hins vegar \u201ejumper\u201c tengi (oft kalla\u00f0 0,1\" tengi e\u00f0a Dupont tengi; \u00feetta eru tengi sem passa vi\u00f0 \u201eheader\u201c pinnana h\u00e9r a\u00f0 ofan sem l\u00f3\u00f0a\u00f0ir eru vi\u00f0 servo:bit bretti\u00f0.<\/p>\n<p>\u00deessir fr\u00e1 AliExpress eru l\u00edklega bara \u00e1g\u00e6tir. \u00c9g hef bara b\u00fai\u00f0 svona til sj\u00e1lfur me\u00f0 \u00fev\u00ed a\u00f0 l\u00f3\u00f0a tengiv\u00edra vi\u00f0 kr\u00f3k\u00f3d\u00edlaklemmu, en l\u00e9t slag standa og b\u00e6tti vi\u00f0 \u00feessum tengjum vi\u00f0 \u00ed Amazon p\u00f6ntun um daginn og \u00feetta vir\u00f0ast vera mikil g\u00e6\u00f0atengi. Gott sil\u00edkon \u00ed einangruninni og lei\u00f0arinn l\u00f3\u00f0a\u00f0ur vi\u00f0 kr\u00f3k\u00f3d\u00edlaklemmuna (yfirleitt eru \u00feetta bara klemmt). Hitt er l\u00edklega bara feikin\u00f3g, en ef \u00fei\u00f0 megi\u00f0 ey\u00f0a \u00ed hitt g\u00e6ti \u00fea\u00f0 borga\u00f0 sig \u00e1 endanum.<\/p>\n<p>Athugi\u00f0 a\u00f0 jumper\/0,1\"\/Dupont-tengi\u00f0 er tvenns kyns: karl- og kvenkyns (kk er me\u00f0 pinna, kvk er me\u00f0 gati, ef \u00fea\u00f0 var ekki lj\u00f3st). PInnarnir \u00e1 tengibrettinu eru karlkyns svo v\u00edrinn \u00fearf a\u00f0 vera me\u00f0 kvk tengi.<\/p>\n<h3>Kr\u00f3k\u00f3d\u00edlaklemma \u00ed kr\u00f3k\u00f3d\u00edlaklemmu<\/h3>\n<p>\u00dea\u00f0 er gott a\u00f0 eiga nokkrar svona kr\u00f3k\u00f3d\u00edl-\u00ed-kr\u00f3k\u00f3d\u00edl kapal. L\u00edklega ver\u00f0a margar tengingar ger\u00f0ar me\u00f0 koparl\u00edmbandi og tengt me\u00f0 kr\u00f3k\u00f3d\u00edll-\u00ed-jumper k\u00f6plunum, en gott a\u00f0 vera me\u00f0 slatta af \u00feessu. 30 tengi \u00e6ttu a\u00f0 duga. 50 eru feykin\u00f3g.<\/p>\n<h3>Valkv\u00e6mt<\/h3>\n<h4>Jumper-kaplar<\/h4>\n<h4>Orkubankar<\/h4>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ENN \u00cd VINNSLU. BIRTI FRUMDR\u00d6GIN TIL A\u00d0 GETA DEILT ME\u00d0 KENNARANUM SEM \u00c9G LOFA\u00d0I \u00deESSU \u00cd DAG...] Undanfarin misseri h\u00f6fum vi\u00f0 veri\u00f0 a\u00f0 keyra og&hellip;<\/p>\n","protected":false},"author":1485,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[150637,759,150638],"tags":[],"class_list":["post-300","post","type-post","status-publish","format-standard","hentry","category-forritun","category-oflokkad","category-taekjaforritun"],"_links":{"self":[{"href":"https:\/\/uni.hi.is\/martin\/wp-json\/wp\/v2\/posts\/300","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/uni.hi.is\/martin\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/uni.hi.is\/martin\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/uni.hi.is\/martin\/wp-json\/wp\/v2\/users\/1485"}],"replies":[{"embeddable":true,"href":"https:\/\/uni.hi.is\/martin\/wp-json\/wp\/v2\/comments?post=300"}],"version-history":[{"count":11,"href":"https:\/\/uni.hi.is\/martin\/wp-json\/wp\/v2\/posts\/300\/revisions"}],"predecessor-version":[{"id":384,"href":"https:\/\/uni.hi.is\/martin\/wp-json\/wp\/v2\/posts\/300\/revisions\/384"}],"wp:attachment":[{"href":"https:\/\/uni.hi.is\/martin\/wp-json\/wp\/v2\/media?parent=300"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/uni.hi.is\/martin\/wp-json\/wp\/v2\/categories?post=300"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/uni.hi.is\/martin\/wp-json\/wp\/v2\/tags?post=300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}