{"id":985,"date":"2016-08-31T23:13:54","date_gmt":"2016-08-31T15:13:54","guid":{"rendered":"https:\/\/yanjingang.com\/blog\/?p=985"},"modified":"2022-05-06T17:48:14","modified_gmt":"2022-05-06T09:48:14","slug":"%e5%b0%8f%e7%8c%aa%e5%ad%a6arduino-%e9%80%9a%e8%bf%87pwm%e5%8f%af%e8%b0%83%e7%94%b5%e9%98%bb%e8%b0%83%e8%8a%82led%e4%ba%ae%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/yanjingang.com\/blog\/?p=985","title":{"rendered":"\u5c0f\u732a\u5b66arduino\u2014\u901a\u8fc7PWM\u53ef\u8c03\u7535\u963b\u8c03\u8282led\u4eae\u5ea6"},"content":{"rendered":"<p class=\"p1\"><span class=\"s1\">Pulse Width Modulation <\/span><span class=\"s2\">\u5c31\u662f\u901a\u5e38\u6240\u8bf4\u7684<\/span><span class=\"s1\">PWM<\/span><span class=\"s2\">\uff0c\u8bd1\u4e3a\u8109\u51b2\u5bbd\u5ea6\u8c03\u5236\uff0c\u7b80\u79f0\u8109\u5bbd\u8c03\u5236\u3002\u8109\u51b2\u5bbd\u5ea6\u8c03\u5236\uff08<\/span><span class=\"s1\">PWM<\/span><span class=\"s2\">\uff09\u662f\u4e00\u79cd\u5bf9\u6a21\u62df\u4fe1\u53f7\u7535\u5e73\u8fdb\u884c\u6570\u5b57\u7f16\u7801\u7684\u65b9\u6cd5\uff0c\u7531\u4e8e\u8ba1\u7b97\u673a\u4e0d\u80fd\u8f93\u51fa\u6a21\u62df\u7535\u538b\uff0c\u53ea\u80fd\u8f93\u51fa<\/span><span class=\"s1\">0 <\/span><span class=\"s2\">\u6216<\/span><span class=\"s1\">5V <\/span><span class=\"s2\">\u7684\u7684\u6570\u5b57\u7535\u538b\u503c\uff0c\u6211\u4eec\u5c31\u901a\u8fc7\u4f7f\u7528\u9ad8\u5206\u8fa8\u7387\u8ba1\u6570\u5668\uff0c\u5229\u7528\u65b9\u6ce2\u7684\u5360\u7a7a\u6bd4\u88ab\u8c03\u5236\u7684\u65b9\u6cd5\u6765\u5bf9\u4e00\u4e2a\u5177\u4f53\u6a21\u62df\u4fe1\u53f7\u7684\u7535\u5e73\u8fdb\u884c\u7f16\u7801\u3002<\/span><\/p>\n<p class=\"p1\"><span style=\"color: #ff0000;\">\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u4e2a\u53ef\u8c03\u7684\u65cb\u94ae\uff0c\u503c\u968f\u7740\u65cb\u8f6c\u89d2\u5ea6\u800c\u53d8\u5316\uff0c\u4ece\u800c\u7528\u6765\u63a7\u5236\u706f\u7684\u4eae\u5ea6\u3001\u8f6e\u5b50\u7684\u8f6c\u52a8\u901f\u5ea6\u7b49\u3002<\/span><\/p>\n<p class=\"p1\">pwm\u53ef\u8c03\u7535\u963b\u8fde\u7ebf\u56fe\uff1a<\/p>\n<p class=\"p1\"><a href=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2016\/08\/2.jpg\" rel=\"attachment wp-att-987\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-987\" src=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2016\/08\/2.jpg\" alt=\"2\" width=\"329\" height=\"419\" srcset=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2016\/08\/2.jpg 329w, https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2016\/08\/2-236x300.jpg 236w\" sizes=\"(max-width: 329px) 100vw, 329px\" \/><\/a><\/p>\n<p class=\"p1\"><span style=\"color: #ff0000;\">led\u8ddf\u4e4b\u524d\u7684\u8fde\u7ebf\u65b9\u6cd5\u4e00\u6837\uff0c\u4f46\u662f\u5f15\u811a\u5fc5\u987b\u662f3\uff0c5\uff0c6\uff0c9\uff0c10\u548c11\u5176\u4e2d\u7684\u4e00\u4e2a\uff0c\u56e0\u4e3a\u6a21\u62df\u8f93\u51fa\u51fd\u6570\u53ea\u5728\u8fd9\u4e9b\u5f15\u811a\u4e0a\u624d\u6709\u6548\uff01\uff01<\/span><\/p>\n<p class=\"p1\"><span style=\"color: #ff0000;\">pwm\u53ef\u8c03\u7535\u963b\u7684\u8fde\u7ebf\u4e5f\u6bd4\u8f83\u7b80\u5355\uff0c\u5e76\u5217\u811a\u4e00\u4e2a\u8fde\u6b63\u6781\uff0c\u4e00\u4e2a\u8fde\u8d1f\u6781\uff1b\u7b2c3\u4e2a\u4e2d\u95f4\u72ec\u7acb\u7684\u811a\u76f4\u63a5\u8fde\uff210\u6a21\u62df\u7aef\u53e3\u5373\u53ef\u3002<\/span><\/p>\n<p class=\"p1\">\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\">int potpin=0;\/\/\u5b9a\u4e49\u6a21\u62df\u63a5\u53e30\r\nint ledpin=11;\/\/\u5b9a\u4e49\u6570\u5b57\u63a5\u53e311\uff08PWM \u8f93\u51fa\uff09\r\nint val=0;\/\/ \u6682\u5b58\u6765\u81ea\u4f20\u611f\u5668\u7684\u53d8\u91cf\u6570\u503c\r\n\r\nvoid setup(){\r\n    pinMode(ledpin,OUTPUT);\/\/\u5b9a\u4e49\u6570\u5b57\u63a5\u53e311 \u4e3a\u8f93\u51fa\r\n    Serial.begin(9600);\/\/\u8bbe\u7f6e\u6ce2\u7279\u7387\u4e3a9600\r\n    \/\/\u6ce8\u610f\uff1a\u6a21\u62df\u63a5\u53e3\u81ea\u52a8\u8bbe\u7f6e\u4e3a\u8f93\u5165\r\n}\r\n\r\nvoid loop(){\r\n    val=analogRead(potpin);\/\/ \u8bfb\u53d6\u4f20\u611f\u5668\u7684\u6a21\u62df\u503c\u5e76\u8d4b\u503c\u7ed9val\r\n    Serial.println(val);\/\/\u663e\u793aval \u53d8\u91cf\r\n    analogWrite(ledpin,val\/4);\/\/ \u6253\u5f00LED \u5e76\u8bbe\u7f6e\u4eae\u5ea6\uff08PWM \u8f93\u51fa\u6700\u5927\u503c255\uff09\r\n    delay(10);\/\/\u5ef6\u65f610ms\r\n}<\/code><\/pre>\n<p class=\"p3\">\u4ee3\u7801\u8bf4\u660e\uff1a<\/p>\n<p class=\"p1\">\u901a\u8fc7pwm\uff1danalogRead(0)\u8bfb\u53d6\u4f20\u611f\u5668\u6a21\u62df\u8109\u5bbd\u503c\uff080\uff0d1024\uff09\uff0c\u9664\u4ee54\u8ba1\u7b97\u5f97\u51fa\u5bf9\u5e94\u9ad8\u7535\u5e73\u4eae\u5ea6\u503c\uff0c\u7136\u540e\u901a\u8fc7analogWrite(11, pwm\/4);\/\/\u6a21\u62df\u8f93\u51fa\u9ad8\u7535\u5e73\u4eae\u5ea6\u503c\uff080\uff0d254\uff09<\/p>\n<p class=\"p1\">\u6548\u679c\u56fe\uff1a<\/p>\n<p class=\"p1\"><a href=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2016\/08\/3.jpg\" rel=\"attachment wp-att-988\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-988\" src=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2016\/08\/3.jpg\" alt=\"3\" width=\"284\" height=\"207\" \/><\/a><\/p>\n<p class=\"p1\">\n","protected":false},"excerpt":{"rendered":"<p>Pulse Width Modulation \u5c31\u662f\u901a\u5e38\u6240\u8bf4\u7684PWM\uff0c\u8bd1\u4e3a\u8109\u51b2\u5bbd\u5ea6\u8c03\u5236\uff0c\u7b80\u79f0\u8109\u5bbd\u8c03\u5236\u3002\u8109\u51b2\u5bbd\u5ea6\u8c03 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[353],"tags":[354,420,421,422],"_links":{"self":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/985"}],"collection":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=985"}],"version-history":[{"count":0,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/985\/revisions"}],"wp:attachment":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}