{"id":1702,"date":"2017-09-06T21:39:46","date_gmt":"2017-09-06T12:39:46","guid":{"rendered":"http:\/\/now0930.tk\/wordpress\/?p=1702"},"modified":"2017-09-06T21:49:36","modified_gmt":"2017-09-06T12:49:36","slug":"lego-mindstorm-ev3-%ec%a0%9c%ec%96%b4%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/lego-mindstorm-ev3-%ec%a0%9c%ec%96%b4%ea%b8%b0\/","title":{"rendered":"Lego MindStorm EV3 \uc81c\uc5b4\uae30"},"content":{"rendered":"<p>\uc870\uc885\uae30 \ub2e4\uc74c\uc73c\ub85c Lego \ub9c8\uc778\ub4dc\uc2a4\ud1b0\uc73c\ub85c \ubaa8\ud130 \uc81c\uc5b4\uae30\ub97c \ub9cc\ub4e4\uc5c8\ub2e4.<\/p>\n<p>\uae30\ubcf8\uac1c\ub150\uc774 \uc544\ub798 \uadf8\ub9bc\uc5d0 \ud45c\uc2dc\ub418\uc5b4 \uc788\ub2e4.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-large wp-image-1703\" src=\"http:\/\/now0930.tk\/wordpress\/wp-content\/uploads\/2017\/09\/20170906_204941-885x1024.jpg\" alt=\"\" width=\"474\" height=\"548\" srcset=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2017\/09\/20170906_204941-885x1024.jpg 885w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2017\/09\/20170906_204941-259x300.jpg 259w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2017\/09\/20170906_204941-768x888.jpg 768w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><\/p>\n<p>\uc870\uc885\uae30\uc758 \uc5ed\ud560<\/p>\n<ul>\n<li>\uc11c\ubc84.<\/li>\n<li>\ud734\ub300\ud3f0 \uae30\uc6b8\uae30\ub97c \ud655\uc778\ud558\uc5ec, \uacf5\uc744 \uae30\uc6b8\uae30 \ubc29\ud5a5\uc73c\ub85c \uc774\ub3d9.<\/li>\n<li>\uacf5\uc774 \ud654\uba74 \uad6c\uc11d\uc73c\ub85c \uc774\ub3d9\ud558\uba74, \uae30\uc6b8\uae30\uac00 \uacf5 \uc704\uce58\ub97c \ubcc0\uacbd\ud558\uc9c0 \uc54a\uc74c<\/li>\n<li>\uacf5 \uc704\uce58\ub97c 135\ub3c4 \ud68c\uc804 \ud6c4, \uc218\ud3c9 \uc774\ub3d9\uc2dc\ucf1c<br \/>\n&#8220;Left;&#8230;, Right:&#8230;&#8221; \ud615\uc2dd\uc73c\ub85c \uc18c\ucf13\uc73c\ub85c \uc804\uc1a1<\/li>\n<\/ul>\n<p>Lego Mindstorm\uc758 \uc5ed\ud560<br \/>\n(\uc804\uc5d0 \ub9cc\ub4e4\uc5c8\ub358 \ubd80\ubd84\uc744 \uc7ac\ud65c\uc6a9 \ud558\uc5ec, \uc9c0\uc800\ubd84\ud568.)<\/p>\n<ul>\n<li>\ud074\ub77c\uc774\uc5b8\ud2b8.<\/li>\n<li>\ub9c1 \ubc84\ud37c\ub97c \ub9cc\ub4e0 \ud6c4, Left, Right \uc774\ub3d9 \uc704\uce58\ub97c \ubc84\ud37c\uc5d0 \uc800\uc7a5.<\/li>\n<li>Thread\uac00 Socket\uc73c\ub85c \uc548\ub4dc\ub85c\uc774\ub4dc \ud3f0\uc5d0 connect, receive, close.<\/li>\n<li>\uc774 \uacfc\uc815\uc744 \ubc18\ubcf5<\/li>\n<li>\uc218\uc2e0 \ub370\uc774\ud130(&#8220;Left:&#8230;.,Right:&#8230;.&#8221;)\uc5d0\uc11c<br \/>\n&#8220;Left:&#8221;, &#8220;,Right:&#8221;\uc758 \uc704\uce58\ub97c \ucc3e\uc74c.<\/li>\n<li>\uc22b\uc790\ub97c \ucd94\ucd9c, trim \ud6c4 integer\ub85c \ubcc0\uacbd.<\/li>\n<li>\ubcc0\uacbd\ub41c integer\ub9cc\ud07c, Left, Right \ubaa8\ud130\ub97c \uc774\ub3d9.<\/li>\n<\/ul>\n<p>EV3\ub97c lejos \ubca0\ud0c0 \ubc84\uc804\uc744 \uc0ac\uc6a9\ud574\uc11c\uc778\uc9c0, socket\uc758 utf-8\ub85c \ub370\uc774\ud130\uac00 \uc804\uc1a1\ub418\uc9c0 \uc54a\uc558\ub2e4. ascii\ub85c \ubcc0\uacbd, \uc804\uc1a1\ud558\uc5ec \uc2dc\uac04 \uc880 \uac78\ub838\ub2e4.<\/p>\n<p>\uc911\uc694\ud55c \uc0ac\uc2e4\uc774<\/p>\n<ul>\n<li>\ub0b4\uac00 \uc0dd\uac01\ud55c \ub9cc\ud07c \uc798 \uc6c0\uc9c1\uc774\uc9c0 \uc54a\ub294\ub2e4.<br \/>\n\ucc28\ub7c9 \ubc14\ud034\ub97c 4\uac1c\ub85c \ub9cc\ub4e4\ub2e4 \ubcf4\ub2c8, Left \ubaa8\ud130\ub97c -\ubc29\ud5a5, Right \ubaa8\ud130\ub97c +\ubc29\ud5a5\uc73c\ub85c \ub3cc\ub9ac\uba74, \ud655 \ub3cc\uc544\uc57c \ub418\ub294\ub370, \uc9c0 \ubab8\uccb4\uc5d0 \uac78\ub824 \uc548\ub3c8\ub2e4!!!<br \/>\n\ub610\ud55c \uc81c\ud488\uc774 \ubb34\uac70\uc6cc\uc11c\uc778\uc9c0, \ubc14\ud034\uac00 \ud5db\ub3c4\ub294 \uacbd\uc6b0\uac00 \ub9ce\ub2e4.<\/li>\n<li>\uc2e4\ud589 \uc21c\uc11c\uc5d0 \ub530\ub77c, NullPointException\uc774 \ub108\ubb34 \ub9ce\ub2e4.<br \/>\ntry, throw\ub85c \ub3c4\ubc30\ub97c \ud574\uc57c \ud560 \ub4ef\ud55c\ub370, \uc2dc\uac04\uc774 \ub610 \ud55c\uc5c6\uc774 \uac08 \ub4ef\ud558\ub2e4.<\/li>\n<li>\uc548\ub4dc\ub85c\uc774\ub4dc \ud3f0\uc758 \uc88c\ud45c \uc124\uc815 \ubb38\uc81c.<br \/>\n\ud654\uba74\uc758 \uacf5\uc774 \ub514\uc2a4\ud50c\ub808\uc774 \uc911\uc559\uc5d0 \uc788\ub294\ub370, EV3\uc774 \ud6c4\uc9c4\ud55c\ub2e4.<br \/>\n\ubcf4\uc815\uc744 \ud574\uc57c \ud558\ub294\ub370, \uadc0\ucc2e\ub2e4.<\/li>\n<li>\uc548\ub4dc\ub85c\uc774\ub4dc \ud3f0 \ud654\uba74\uc774 \uaebc\uc9c0\uba74, \ub3d9\uc791\uc774 \uba48\ucdb0\uc57c \ud558\ub294\ub370 \uadf8\ub807\uc9c0 \uc54a\ub2e4. \ub9c1 \ubc84\ud37c\uc5d0\uc11c \ub2e4 \uc0ac\uc6a9\ud558\uba74, 0\uc73c\ub85c \uc774\ub3d9\uc774 \ub9de\uc544 \ubcf4\uc774\ub294\ub370..\uacc4\uc18d \uc6c0\uc9c1\uc778\ub2e4.<\/li>\n<\/ul>\n<p>\ub354 \uc911\uc694\ud55c \uc0ac\uc2e4\uc774,<\/p>\n<ul>\n<li>\uc560\uac00 \ubcc4\ub85c \uc7ac\ubbf8\uc5c6\uc5b4 \ud55c\ub2e4!!<br \/>\n\ucc28\uac00 \ube68\ub791 \ube68\ub791 \uc6c0\uc9c1\uc5ec\uc57c \ud558\ub294\ub370, \uc9c0\uc815 \uc704\uce58\ub85c \uac00\ub2e4 \ubcf4\ub2c8, \ub108\ubb34 \ub290\ub9ac\ub2e4. \ud30c\uc6cc\ub85c \uc218\uc815\ud558\ub824\ub2c8 \uadc0\ucc2e\uace0.<\/li>\n<\/ul>\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"untitled\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/974Cen4VCAA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>\ub204\uac00 \uc18c\ucf13\uc744 \uc798 \uc815\ub9ac\ud558\uc5ec \uc778\ud130\ub137\uc5d0 \uc62c\ub838\ub2e4.<br \/>\n<a href=\"http:\/\/philosophical.one\/post\/java-socket-programming-basics\/\">\uc5ec\uae30<\/a>\uc640 <a href=\"https:\/\/stackoverflow.com\/questions\/1176135\/java-socket-send-receive-byte-array\">\uc5ec\uae30<\/a>.<br \/>\nDataInputStream\uc744 \uadf8\ub0e5 \uc0ac\uc6a9\ud588\ub294\ub370, \ubcc4 \ubaa9\uc801\uc774 \uc5c6\uc73c\uba74 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294\uac8c \ub9de\uc544 \ubcf4\uc778\ub2e4.<br \/>\nDataInputStream\uc73c\ub85c \uc548\ub4dc\ub85c\uc774\ub4dc \ud3f0\uacfc EV3\uc774 \ud1b5\uc2e0\uc774 \ub418\uc9c0 \uc54a\ub294\ub2e4.<br \/>\n\ub204\uac00 \uc774\ubbf8 \uc791\uc131\ud55c \ucf54\ub4dc\ub97c \uc4f0\ub2e4 \ubcf4\ub2c8, socket\uc744 \uc5b4\ub5bb\uac8c \uc4f0\ub294\uc9c0 \uc815\ub9ac\ub418\uc9c0 \uc54a\uc544\ub294\ub370, \uc704 \uc0ac\uc774\ud2b8\uac00 \uc815\ub9ac\ud558\ub294\ub370 \ub3c4\uc6c0\uc744 \uc92c\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc870\uc885\uae30 \ub2e4\uc74c\uc73c\ub85c Lego \ub9c8\uc778\ub4dc\uc2a4\ud1b0\uc73c\ub85c \ubaa8\ud130 \uc81c\uc5b4\uae30\ub97c \ub9cc\ub4e4\uc5c8\ub2e4. \uae30\ubcf8\uac1c\ub150\uc774 \uc544\ub798 \uadf8\ub9bc\uc5d0 \ud45c\uc2dc\ub418\uc5b4 \uc788\ub2e4. \uc870\uc885\uae30\uc758 \uc5ed\ud560 \uc11c\ubc84. \ud734\ub300\ud3f0 \uae30\uc6b8\uae30\ub97c \ud655\uc778\ud558\uc5ec, \uacf5\uc744 \uae30\uc6b8\uae30 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1706,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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