{"id":531,"date":"2022-11-17T16:32:57","date_gmt":"2022-11-17T08:32:57","guid":{"rendered":"http:\/\/wordpress.loc\/?p=531"},"modified":"2023-02-22T20:48:54","modified_gmt":"2023-02-22T12:48:54","slug":"esp32_ch1-6","status":"publish","type":"post","link":"https:\/\/www.nmking.io\/index.php\/2022\/11\/17\/531\/","title":{"rendered":"\u7b2c09\u7bc7 ESP32 \u6eab\u6fd5\u5ea6\u986f\u793a\u5668(DHT11+1602 LCD)"},"content":{"rendered":"\n<figure class=\"wp-block-pullquote\"><blockquote><p>\u6eab\u6fd5\u5ea6\u611f\u6e2c\u662f\u7269\u806f\u7db2\u5be6\u9a57\u91cd\u8981\u7684\u4e00\u74b0\uff0c\u6536\u96c6\u5927\u91cf\u7684\u8cc7\u6599\u53ef\u4ee5\u4e86\u89e3\u6eab\u6fd5\u5ea6\u6578\u503c\u5c0d\u74b0\u5883\u7684\u5f71\u97ff\uff0c\u4f8b\u5982\u5075\u6e2c\u5009\u5eab\u7684\u6eab\u6fd5\u5ea6<\/p><\/blockquote><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-ht-block-toc is-style-rounded htoc htoc--position-wide toc-list-style-plain\" data-htoc-state=\"expanded\"><span class=\"htoc__title\"><span class=\"ht_toc_title\">Table of Contents<\/span><span class=\"htoc__toggle\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\"><g fill=\"#444\"><path d=\"M15 7H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><path d=\"M15 1H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1zM15 13H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><\/g><\/svg><\/span><\/span><div class=\"htoc__itemswrap\"><ul class=\"ht_toc_list\"><li class=\"\"><a href=\"#htoc-\">\u524d\u8a00<\/a><\/li><li class=\"\"><a href=\"#htoc-dht11\">\u6eab\u6fd5\u5ea6\u611f\u6e2c(DHT11)<\/a><ul class=\"ht_toc_child_list\"><li class=\"\"><a href=\"#htoc-1\">1.\u611f\u6e2c\u5668\u7a2e\u985e\u4ecb\u7d39<\/a><\/li><li class=\"\"><a href=\"#htoc-2\">2.\u5b89\u88ddsimpleDHT\u7a0b\u5f0f\u5eab<\/a><\/li><\/ul><\/li><li class=\"\"><a href=\"#htoc-1602lcd\">1602LCD\u986f\u793a\u5668<\/a><ul class=\"ht_toc_child_list\"><li class=\"\"><a href=\"#htoc-11\">1.LCD\u986f\u793a\u5668\u7a2e\u985e\u4ecb\u7d39<\/a><\/li><li class=\"\"><a href=\"#htoc-21\">2.ESP32\u9023\u63a5LCD\u8207\u8a2d\u5b9a<\/a><\/li><li class=\"\"><a href=\"#htoc-3\">3.\u5b89\u88ddLCD\u7a0b\u5f0f\u5eab<\/a><\/li><li class=\"\"><a href=\"#htoc-lcd\">4.LCD\u5b8c\u6574\u7a0b\u5f0f\u78bc<\/a><\/li><\/ul><\/li><\/ul><\/div><\/div>\n\n\n\n<p>\u6211\u7684ESP32\u5be6\u505a\u66f8\u7c4d\uff1a<a rel=\"noreferrer noopener\" href=\"https:\/\/www.nmking.io\/index.php\/2022\/11\/10\/esp32_ch1-2\/\" target=\"_blank\">\u6211\u51fa\u66f8\u4e86 ESP32 \u7269\u806f\u7db2\u5c08\u984c<\/a><br>\u535a\u5ba2\u4f86\u7db2\u5740\uff1a<a rel=\"noreferrer noopener\" href=\"https:\/\/www.books.com.tw\/products\/0010901195\" target=\"_blank\">https:\/\/www.books.com.tw\/products\/0010901195<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-\">\u524d\u8a00<\/h2>\n\n\n\n<p>\u6eab\u6fd5\u5ea6\u611f\u6e2c\u662f\u7269\u806f\u7db2\u5be6\u9a57\u91cd\u8981\u7684\u4e00\u74b0\uff0c\u6536\u96c6\u5927\u91cf\u7684\u8cc7\u6599\u53ef\u4ee5\u4e86\u89e3\u6eab\u6fd5\u5ea6\u6578\u503c\u5c0d\u74b0\u5883\u7684\u5f71\u97ff\uff0c\u4f8b\u5982\u5075\u6e2c\u5009\u5eab\u7684\u6eab\u6fd5\u5ea6\uff0c\u53ef\u4ee5\u907f\u514d\u5546\u54c1\u53d7\u6f6e\u800c\u6545\u969c\u6216\u8150\u6557\uff0c\u76e3\u63a7\u6559\u5ba4\u7684\u6eab\u6fd5\u5ea6\u4e5f\u53ef\u4ee5\u907f\u514d\u592a\u71b1\u5f71\u97ff\u5230\u5b78\u751f\u7684\u5b78\u7fd2\u6548\u7387\uff0c\u800c\u672c\u7ae0\u5c07\u6703\u4ee5DHT11\u611f\u6e2c\u5668\u4f86\u611f\u6e2c\u74b0\u5883\u6eab\u6fd5\u5ea6\uff0c\u4e26\u5229\u75281602LCD\u986f\u793a\u6578\u503c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-dht11\">\u6eab\u6fd5\u5ea6\u611f\u6e2c(DHT11)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-1\">1.\u611f\u6e2c\u5668\u7a2e\u985e\u4ecb\u7d39<\/h3>\n\n\n\n<p>\u5728Arduino\u4e2d\u6709\u8a31\u591a\u611f\u6e2c\u6eab\u5ea6\u7684\u611f\u6e2c\u5668\uff0c\u4f8b\u5982DHT\u7cfb\u5217\uff0811\u621622\uff09\u3001DS18B20\u3001LM35\u7b49\uff0c\u5176\u4e2dLM35\u53caDS18B20\u70ba\u4e09\u6975\u9ad4\u5916\u578b\uff0cDHT\u7cfb\u5217\u5247\u5206\u6210\u85cd\u8272DHT11\u53ca\u767d\u8272DHT22\uff0c\u5176\u898f\u683c\u6bd4\u8f03\u8868\u5982\u4e0b\uff0cLM35\u8207DS18B20\u5728\u611f\u6e2c\u4e0a\u6548\u679c\u5dee\u4e0d\u591a\uff0c\u53ef\u4ee5\u7cbe\u78ba\u5230\u5c0f\u6578\u9ede\u4ee5\u4e0b\u5169\u4f4d\uff0c\u5e02\u552eDS18B20\u5e38\u5305\u8986\u4e0d\u93fd\u92fc\uff0c\u53ef\u4ee5\u7528\u65bc\u5075\u6e2c\u4e00\u4e9b\u6975\u7aef\u74b0\u5883\uff0c\u4f8b\u5982\u6e2c\u91cf\u6c34\u65cf\u7bb1\u6eab\u5ea6\uff0c\u6216\u8005\u5316\u5b78\u6eb6\u6db2\u4e2d\u3002\u672c\u66f8\u5247\u662f\u4ee5DHT11\u70ba\u7bc4\u4f8b\uff0c\u53ef\u540c\u6642\u6e2c\u91cf\u6eab\u5ea6\u53ca\u6fd5\u5ea6\u8b8a\u5316\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604236950-688345930-g_n.png?resize=840%2C371&#038;ssl=1\" alt=\"\" width=\"840\" height=\"371\"\/><figcaption class=\"wp-element-caption\">\u5404\u5f0f\u6eab\u5ea6\u611f\u6e2c\u5668<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\"> \u611f\u6e2c\u5668\u578b\u865f<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u611f\u6e2c\u5167\u5bb9<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u5916\u89c0<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u611f\u6e2c\u7bc4\u570d<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u8aa4\u5dee<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u901a\u8a0a\u65b9\u5f0f<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">LM35<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6eab\u5ea6<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u4e09\u6975\u9ad4<\/td><td class=\"has-text-align-center\" data-align=\"center\">-55 ~ 150\u2103<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u00b10.25\u2103<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u985e\u6bd4<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">DS18B02<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6eab\u5ea6<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u4e09\u6975\u9ad4<\/td><td class=\"has-text-align-center\" data-align=\"center\">-55 ~125\u2103<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u00b10.5\u2103<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6578\u4f4d<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">DHT11<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6eab\u5ea6\u3001\u6fd5\u5ea6<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u85cd\u8272\u7db2\u72c0<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6eab\u5ea6: 0 ~ 50\u2103<br>\u6fd5\u5ea6: 20 ~ 95%<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u00b12\u2103<br>\u00b15%<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6578\u4f4d<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">DHT12<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6eab\u5ea6\u3001\u6fd5\u5ea6<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u767d\u8272\u7db2\u72c0<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6eab\u5ea6:-40~ -80\u2103<br>\u6fd5\u5ea6: 0 ~ 100%<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u00b10.5\u2103<br>\u00b12%<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6578\u4f4d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>DHT11\u7684\u5916\u89c0\u5982\u4e0b\u5716\uff0c\u7531\u5de6\u5230\u53f3\u4f9d\u5e8f\u70ba\u8a0a\u865f(s)\u3001VCC(+)\u53caGND(-)\u53ca\u4e09\u500b\u8173\u4f4d\uff0c\u5176\u4e2dVCC\u56e0\u70ba\u4f4d\u7f6e\u4e0d\u5920\u56e0\u6b64\u6c92\u6a19\u660e\uff0c\u7279\u5225\u8981\u8aaa\u660e\u7684\u662fDHT11\u8207\u5176\u4ed6\u611f\u6e2c\u5668\u6bd4\u8f03\u8d77\u4f86\u8f03\u70ba\u8106\u5f31\uff0c\u82e5VCC\u3001GND\u63a5\u53cd\u4e86\u5f88\u5feb\u5c31\u6703\u71d2\u6bc0\uff0c\u56e0\u6b64\u5728\u63a5\u7dda\u4e0a\u5fc5\u9808\u7279\u5225\u6ce8\u610f\uff0c\u4ee5\u514d\u767c\u751f\u5371\u96aa\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604236967-3169225004-g.png?resize=249%2C311&#038;ssl=1\" alt=\"\" width=\"249\" height=\"311\"\/><figcaption class=\"wp-element-caption\">DHT11\u611f\u6e2c\u5668\u5916\u89c0<\/figcaption><\/figure>\n\n\n\n<p>DHT\u7cfb\u5217\u898f\u683c\u4e0a\u96d6\u7136\u6a19\u660e\u70ba\u6578\u4f4d\u50b3\u8f38\uff0c\u4f46\u662f\u975edigitalRead\u9019\u9ebc\u7c21\u55ae\uff0c\u800c\u662f\u4e00\u9023\u4e32\u7684\u8a0a\u865f\u4ea4\u63db\u53ca\u89e3\u8b6f\u624d\u80fd\u7372\u5f97\u6578\u503c\uff0c\u70ba\u4e86\u6e1b\u5c11\u9019\u500b\u8907\u96dc\u7684\u904e\u7a0b\uff0c\u6211\u5011\u53ef\u4ee5\u5b89\u88ddsimpleDHT.h\u7a0b\u5f0f\u5eab\uff0c\u53ea\u8981\u547c\u53eb\u4e00\u884c\u6307\u4ee4\u5c31\u53ef\u4ee5\u76f4\u63a5\u53d6\u5f97\u611f\u6e2c\u5668\u6578\u503c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604236977-3348571073-g.png?resize=841%2C294&#038;ssl=1\" alt=\"\" width=\"841\" height=\"294\"\/><figcaption class=\"wp-element-caption\">DHT \u8cc7\u6599\u6642\u5e8f\u5716<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604237034-315089255-g_n.png?resize=840%2C406&#038;ssl=1\" alt=\"\" width=\"840\" height=\"406\"\/><figcaption class=\"wp-element-caption\">\u5b89\u88ddsimpleDHT\u7a0b\u5f0f\u5eab<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-2\">2.\u5b89\u88ddsimpleDHT\u7a0b\u5f0f\u5eab<\/h3>\n\n\n\n<p>\u5b89\u88ddsimpleDHT\u7a0b\u5f0f\u5eab\u5f8c<br>\u63a5\u4e0b\u4f86\u6211\u5011\u5c07DHT11\u8207ESP32\u9023\u63a5\u8d77\u4f86\uff0c\u5176\u8173\u4f4d\u5716\u5982\u4e0b\uff0c\u9664\u4e86GND\u53caVCC\u4e4b\u5916\uff0c\u5c07DHT11\u7684\u8a0a\u865f(S)\u9023\u63a5\u5230ESP32\u7684GPIO4\uff0c\u4e0d\u904e\u82e5\u8981\u5c07DHT11\u63a5\u5728GPIO12\u6216GPIO2\u6642\uff0c\u5247\u9808\u7b49\u7a0b\u5f0f\u4e0a\u50b3\u5b8c\u7562\u5f8c\uff0c\u518d\u5c07DHT11\u63a5\u4e0a\uff0c\u5426\u5247\u53ef\u80fd\u6703\u9047\u5230Time out\u7684\u932f\u8aa4\u8a0a\u606f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604236990-1927770541-g.png?w=1290&#038;ssl=1\" alt=\"\"\/><figcaption class=\"wp-element-caption\">DHT11 ESP32\u63a5\u7dda\u5716<\/figcaption><\/figure>\n\n\n\n<p class=\"quote\">DHT11\u8acb\u52ff\u63d2\u5728GPIO2\u621612\u8173\u4f4d\uff0c\u5c07\u6703\u5c0e\u81f4Time out \u932f\u8aa4<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604237057-177457848-g_n.png?resize=842%2C661&#038;ssl=1\" alt=\"\" width=\"842\" height=\"661\"\/><figcaption class=\"wp-element-caption\">Time out \u932f\u8aa4\u756b\u9762<\/figcaption><\/figure>\n\n\n\n<p>\u5b8c\u6210\u63a5\u7dda\u5f8c\uff0c\u6211\u5011\u958b\u555f\u4e0a\u65b9\u529f\u80fd\u8868\/\u6a94\u6848\/\u7bc4\u4f8b\/simpleDHT\uff0c\u627e\u5230\u7a0b\u5f0f\u5eab\u63d0\u4f9b\u7684\u7bc4\u4f8b\u7a0b\u5f0fDHT11Default\uff0c\u958b\u555f\u5f8c\uff0c\u50c5\u9808\u4fee\u6539\u7b2c7\u884c\u7684\u8173\u4f4d\uff0c\u5f9e\u9810\u8a2d\u76842\u6539\u70ba4\u5373\u53ef\u57f7\u884c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;SimpleDHT.h&gt;\nint pinDHT11 = 4;\nSimpleDHT11 dht11(pinDHT11);\n\nvoid setup() {\n  Serial.begin(115200);\n}\n\nvoid loop() {\n  \/\/ start working...  Serial.println(\"=================================\");\n  Serial.println(\"Sample DHT11...\");\n  \n  \/\/ read without samples.\n  byte temperature = 0;\n  byte humidity = 0;\n  int err = SimpleDHTErrSuccess;\n  if ((err = dht11.read(&amp;temperature, &amp;humidity, NULL)) != SimpleDHTErrSuccess) {\n    Serial.print(\"Read DHT11 failed, err=\"); Serial.println(err);delay(1000);\n    return;\n  }\n  Serial.print(\"Sample OK: \");\n  Serial.print((int)temperature); Serial.print(\" *C, \"); \n  Serial.print((int)humidity); Serial.println(\" H\");  \n  \/\/ DHT11 sampling rate is 1HZ.\n  delay(1500);\n}\n\n<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8ff0\u7684\u7bc4\u4f8b\u4e2d\uff0c\u95dc\u9375\u8a9e\u6cd5\u662f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dht11.read(&amp;temperature, &amp;humidity, NULL))<\/code><\/pre>\n\n\n\n<p>\u9019\u53e5\u7684\u610f\u601d\u662f\u958b\u59cb\u8b80\u53d6dht11\u7684\u6eab\u6fd5\u5ea6\u6578\u503c\uff0c\u4e26\u5c07\u7d50\u679c\u653e\u7f6e\u5728temperature\u53cahumidity\u8b8a\u6578\u7684\u4f4d\u5740\uff0c\u4e5f\u5c31\u662f\u8aaa\uff0c\u7576\u57f7\u884c\u5b8cdht11.read\u6307\u4ee4\u5f8c\uff0c\u5c31\u53ef\u4ee5\u5f97\u5230\u74b0\u5883\u7684\u6eab\u6fd5\u5ea6\u6578\u503c\u4e86\uff0c\u4f46\u56e0\u70ba\u63a5\u7dda\u932f\u8aa4\u6216\u8005\u611f\u6e2c\u5668\u6545\u969c\u800c\u8b80\u53d6\u5931\u6557\u7684\u8a71\uff0c\u5247\u6703\u986f\u793a\u932f\u8aa4\u4e26\u4e14\u8fd4\u56de(return)\u3002<br><br>\u800c\u7bc4\u4f8b\u7a0b\u5f0f\u5728\u986f\u793a\u6eab\u6fd5\u5ea6\u6642\uff0c\u524d\u65b9\u52a0\u4e0a(int)\u5247\u662f\u70ba\u4e86\u578b\u5225\u8f49\u63db\uff0c\u4f8b\u5982(int)temperature\uff0c\u56e0\u70badht11.read\u7684\u8cc7\u6599\u683c\u5f0f\u662fbyte\uff0c\u8b80\u53d6\u51fa\u4f86\u5f8c\u5247\u7528(int)\u8f49\u6210\u6574\u6578\u3002<\/p>\n\n\n\n<p class=\"quote\">\u7a0b\u5f0f\u5728\u986f\u793a\u6eab\u6fd5\u5ea6\u6642\uff0c\u5f8c\u7e8c\u6211\u5011\u5728\u4f7f\u7528\u4e0a\u4e5f\u5efa\u8b70\u90fd\u52a0\u4e0a(int)\u4ee5\u514d\u51fa\u932f<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604237106-2158561566-g_n.png?resize=841%2C607&#038;ssl=1\" alt=\"\" width=\"841\" height=\"607\"\/><figcaption class=\"wp-element-caption\">DHT11\u8b80\u53d6\u6b63\u5e38\u8207\u932f\u8aa4\u7684\u8a0a\u606f<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-1602lcd\">1602LCD\u986f\u793a\u5668<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-11\">1.LCD\u986f\u793a\u5668\u7a2e\u985e\u4ecb\u7d39<\/h3>\n\n\n\n<p>\u4e0a\u4e00\u7bc0\u7576\u6211\u5011\u60f3\u77e5\u9053\u6eab\u6fd5\u5ea6\u8cc7\u6599\u6642\uff0c\u53ef\u4ee5\u900f\u904e\u5e8f\u5217\u76e3\u63a7\u8996\u7a97\u67e5\u770b\uff0c\u53ef\u662f\u5982\u679c\u624b\u908a\u6c92\u6709\u96fb\u8166\u53ef\u4ee5\u958b\u555f\u5e8f\u5217\u76e3\u63a7\uff0c\u90a3\u8981\u5982\u4f55\u77e5\u9053DHT11\u6240\u611f\u6e2c\u7684\u8cc7\u6599\u5462\uff1f<br><br>\u5176\u5be6Arduino\u7cfb\u5217\u6709\u76f8\u7576\u591a\u7a2e\u7684\u986f\u793a\u88dd\u7f6e\u53ef\u4ee5\u5229\u7528\uff0c\u4f8b\u5982TFT\u3001OLED\uff0c\u751a\u81f3\u662f\u96fb\u5b50\u7d19(ePaper)\u90fd\u76f8\u7576\u6d41\u884c\uff0c\u5404\u6709\u4e0d\u540c\u7684\u9069\u7528\u74b0\u5883\uff0c\u4e0d\u904e\u5c0d\u521d\u5b78\u8005\u4f86\u8aaa\u6700\u7c21\u55ae\u7684\u61c9\u8a72\u662f\u9ede\u9663\u5f0fLCD(Liquid Crystal Display)\u4e86\uff0c\u73fe\u5728\u5927\u90e8\u4efd\u90fd\u88fd\u4f5c\u70baI2C\u754c\u9762\u76841602 LCD\u6a21\u7d44(LCM\uff1aLiquid Crystal Display Module)\uff0c\u4e5f\u5c31\u662f2\u884c\u6bcf\u884c16\u500b\u5b57\u7684LCD\u986f\u793a\u6a21\u7d44\uff0c\u70ba\u4e86\u4ecb\u7d39\u65b9\u4fbf\uff0c\u4ee5\u4e0b\u6211\u5011\u901a\u7a31\u70ba1602LCD\uff0c\u9664\u4e861602\u4e4b\u5916\uff0c2004\u898f\u683c\u4e5f\u5f88\u5e38\u898b(4\u884cx 20\u5b57)\uff0c\u8b80\u8005\u53ef\u4ee5\u4f9d\u9700\u6c42\u81ea\u884c\u8cfc\u8cb7\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604237161-1257529334-g_n.png?resize=842%2C349&#038;ssl=1\" alt=\"\" width=\"842\" height=\"349\"\/><figcaption class=\"wp-element-caption\">\u76ee\u524d\u5e38\u898b\u986f\u793a\u5668\uff08\u591a\u8272\u96fb\u5b50\u7d19\u4ecd\u4e0d\u666e\u904d\uff09<\/figcaption><\/figure>\n\n\n\n<p>\u8b80\u8005\u5728\u8cfc\u8cb71602LCD\u6642\uff0c\u52d9\u5fc5\u8981\u9078\u64c7\u5177\u6709I2C\u754c\u9762\u7684LCD\uff0c\u6240\u8b02\u7684I2C\u662fInter-Integrated Circuit\u7684\u7c21\u7a31\uff0c\u4e5f\u53ef\u5beb\u4f5cIIC(\u8b80\u6cd5\u70baI-squared-C)\u662f\u4e00\u7a2e\u76f8\u7576\u666e\u904d\u7684\u4f4e\u901f\u50b3\u8f38\u6a21\u5f0f\uff0c\u7531\u65bc\u53ef\u4ee5\u5229\u7528\u5b9a\u5740\u65b9\u5f0f\u9023\u63a5\u6700\u591a112\u500b\u7bc0\u9ede\uff0c\u5927\u91cf\u7528\u65bc\u55ae\u6676\u7247\u3001\u624b\u6a5f\u3001\u4e3b\u6a5f\u677f\u4e4b\u5167\uff0cI2C\u754c\u9762\u50c5\u9808SDA\u53caSCL\u5169\u500b\u8173\u4f4d\uff0cArduino\u7cfb\u5217\u90fd\u6709\u652f\u63f4\uff0c\u82e5\u8cfc\u5165\u6c92\u6709I2C\u754c\u9762LCD\uff0c\u5247\u9700\u8981\u7528\u52306~8\u500b\u8173\u4f4d\uff0c\u5b89\u88dd\u63a7\u5236\u90fd\u6703\u76f8\u7576\u8907\u96dc\uff0c\u76f8\u5f62\u4e4b\u4e0bI2C\u5b89\u88dd\u8f03\u70ba\u7c21\u55ae\uff0c\u4e14\u76f4\u63a5\u547c\u53eb\u51fd\u5f0f\u5eab\u5373\u53ef\u986f\u793a\u5167\u5bb9\u76f8\u7576\u65b9\u4fbf\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604237231-1178261231-g.png?resize=839%2C723&#038;ssl=1\" alt=\"\" width=\"839\" height=\"723\"\/><figcaption class=\"wp-element-caption\">I2C\u754c\u9762\u82071602LCD<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-21\">2.ESP32\u9023\u63a5LCD\u8207\u8a2d\u5b9a<\/h3>\n\n\n\n<p>\u63a5\u4e0b\u4f86\u6211\u5011\u5c07ESP32\u82071602LCD\u9023\u7dda\uff0c\u9664\u4e86VCC\u53caGND\u4e4b\u5916\uff0cESP32\u9810\u8a2d\u7684I2C\u754c\u9762\u70baSDA\u662fGPIO21\u3001SCL\u70baGPIO22\uff0c\u56e0\u6b64\u5c07LCD\u7684SDA-&gt;GPIO21\uff0cSCL-&gt;GPIO22\u5373\u53ef\u3002\u4e0d\u904e\u4f7f\u75281602LCD\u4ecd\u6709\u8a31\u591a\u5e38\u898b\u554f\u984c\uff0c\u9019\u88e1\u5927\u81f4\u5217\u51fa\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u672a\u4f7f\u75285V\uff1aLCD\u9808\u4f7f\u75285V\u96fb\u6e90\u9a45\u52d5\uff0c\u5426\u5247\u80cc\u5149\u53ef\u80fd\u7121\u6cd5\u9ede\u4eae\u3002<\/li>\n\n\n\n<li>\u80cc\u5149\u63a5\u53e3\u6c92\u63a5\uff1a\u7576\u63a5\u4e0a5V\u9ede\u6e90\uff0cLCD\u4ecd\u7121\u6cd5\u9ede\u4eae\uff0c\u9019\u53ef\u80fd\u662f\u80cc\u5149\u63a5\u53e3\u6c92\u63a5\uff0c\u901a\u5e38\u80cc\u5149\u63a5\u53e3\u6703\u6709\u4e00\u500bJump\u5c07\u8173\u4f4d\u77ed\u8def\uff0c\u82e5JUMP\u907a\u5931\u53ef\u4f7f\u7528\u6bcd\u6bcd\u675c\u90a6\u7dda\u5c0d\u63a5\u5373\u53ef\u3002<\/li>\n\n\n\n<li>\u4f4d\u5740\u8a2d\u5b9a\u932f\u8aa4\uff1ai2C\u88dd\u7f6e\u90fd\u6703\u6709\u4e00\u500b\u4f4d\u5740\uff0c\u5ba3\u544a\u932f\u8aa4\u7684\u4f4d\u5740\u662f\u4e0d\u6703\u6709\u4efb\u4f55\u53cd\u61c9\u7684\uff0c\u6240\u4ee5\u5fc5\u9808\u5148\u4ee5\u505a\u4e00\u6b21i2c scan\u6383\u63cf\uff0c\u53d6\u5f97\u6b63\u78ba\u4f4d\u5740\u3002<\/li>\n\n\n\n<li>\u5c0d\u6bd4\u6c92\u8abf\u6574\uff1a\u82e5\u4e0a\u8ff0\u90fd\u5b8c\u6210\uff0c\u4f9d\u7136\u7121\u6cd5\u986f\u793a\u6587\u5b57\uff0c\u90a3\u61c9\u8a72\u662f\u5c0d\u6bd4\u6c92\u8abf\u6574\uff0c\u8acb\u5229\u7528\u5c0f\u87ba\u7d72\u8d77\u5b50\u65cb\u8f49\u5c0d\u6bd4\u65cb\u9215\uff0c\u8abf\u6574\u4e00\u500b\u8b80\u8005\u89ba\u5f97\u6e05\u695a\u7684\u5c0d\u6bd4\u3002<br>\u6211\u5011\u5148\u4f86\u8aaa3\u7684I2C\u4f4d\u5740\u6383\u63cf\u662f\u4ec0\u9ebc\uff1f\u4e0a\u4e00\u6bb5\u63d0\u53caI2C\u53ef\u4ee5\u900f\u904e\u5b9a\u5740\u9023\u63a5\u6700\u591a112\u500b\u88dd\u7f6e\uff0c\u90a3\u9ebc\u4e0d\u540c\u88dd\u7f6e\u5fc5\u7136\u6703\u6709\u4e0d\u540c\u7684\u4f4d\u5740\uff0c\u7576\u6211\u5011\u8981\u57f7\u884c\u7a0b\u5f0f\u6642\u5c31\u8981\u5148\u6307\u5b9a\u9019\u500b\u547d\u4ee4\u662f\u8981\u7d66\u54ea\u4e00\u500b\u88dd\u7f6e\u57f7\u884c\uff0c\u4e0d\u7136\u547d\u4ee4\u6703\u88ab\u932f\u8aa4\u7684\u88dd\u7f6e\u63a5\u6536\uff0c\u5c31\u5c0e\u81f4\u904b\u4f5c\u4e0d\u6b63\u5e38\uff0c\u56e0\u6b64\u6211\u5011\u8981\u5728\u4f7f\u7528\u524d\u5148\u5229\u7528\u4ee5\u4e0b\u7684\u7a0b\u5f0f\u6383\u63cf\u88dd\u7f6e\u7684\u4f4d\u5740\u662f\u591a\u5c11\u3002<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604237244-4133095453-g.png?resize=603%2C381&#038;ssl=1\" alt=\"\" width=\"603\" height=\"381\"\/><figcaption class=\"wp-element-caption\">i2C\u88dd\u7f6e\u63a5\u7dda\u5716<\/figcaption><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;Wire.h&gt;\n\nvoid setup()\n{\n  Serial.begin (115200);  \n  Wire.begin (21, 22);   \/\/ sda= GPIO_21 \/scl= GPIO_22\n}\n\nvoid Scanner ()\n{\n  Serial.println ();\n  Serial.println (\"I2C scanner. Scanning ...\");\n  byte count = 0;\n\n  Wire.begin();\n  for (byte i = 8; i &lt; 120; i++)\n  {\n    Wire.beginTransmission (i); \/\/ Begin I2C transmission Address (i)\n    if (Wire.endTransmission () == 0) \/\/0=success(ACK response) \n    {\n      Serial.print (\"Found address: \");\n      Serial.print (i, DEC);\n      Serial.print (\" (0x\");\n      Serial.print (i, HEX);     \/\/ PCF8574 7 bit address\n      Serial.println (\")\");\n      count++;\n    }\n  }\n  Serial.print (\"Found \");      \n  Serial.print (count, DEC);        \/\/ numbers of devices\n  Serial.println (\" device(s).\");\n}\n\nvoid loop()\n{\n  Scanner ();\n  delay (5000);\n}<\/code><\/pre>\n\n\n\n<p>\u7a0b\u5f0f\u4e0a\u50b3\u5f8c\uff0c\u82e5\u63a5\u7dda\u6b63\u78ba\u6c92\u554f\u984c\u7684\u8a71\uff0c\u5c31\u6703\u51fa\u73fe\u4e0b\u65b9\u7684\u5167\u5bb9\uff0c\u5176\u4e2d<br>I2C device found at address 0x27<br><br>\u4ee3\u8868\u5728ESP32\u4e0a\u6709\u627e\u5230\u4e00\u7d44I2C\u88dd\u7f6e\u4f4d\u5740\u57280x27\uff0c\u9664\u4e860x27\u4e4b\u5916\uff0c1602LCD\u4e5f\u6703\u67090x30\u6216\u5176\u4ed6\u6578\u503c\uff0c\u9019\u500b\u6578\u503c\u5f88\u91cd\u8981\uff0c\u8acb\u5148\u628a\u6578\u503c\u5beb\u4e0b\u4f86\uff0c\u7b49\u7b49\u5c31\u6703\u7528\u5230\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604237257-1270877678-g.png?resize=840%2C641&#038;ssl=1\" alt=\"\" width=\"840\" height=\"641\"\/><figcaption class=\"wp-element-caption\">I2C \u6383\u63cf\u7d50\u679c<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-3\">3.\u5b89\u88ddLCD\u7a0b\u5f0f\u5eab<\/h3>\n\n\n\n<p>\u63a5\u4e0b\u4f86\u6211\u5011\u9700\u8981\u5b89\u88ddLCD\u7684\u7a0b\u5f0f\u5eab\u624d\u80fd\u5728\u4e0a\u9762\u986f\u793a\u6587\u5b57\uff0c\u5229\u7528\u4e0a\u65b9\u529f\u80fd\u8868\/\u8349\u7a3f\u78bc\/\u532f\u5165\u7a0b\u5f0f\u5eab\/\u7ba1\u7406\u7a0b\u5f0f\u5eab<br><br>\u6253\u958b\u7a0b\u5f0f\u5eab\u7ba1\u7406\u54e1\u4e4b\u5f8c\uff0c\u5728\u4e0a\u65b9\u7a7a\u767d\u8655\u8f38\u5165\u95dc\u9375\u5b57\uff1a\u300cLiquidCrystal I2C\u300d\uff0c\u4e26\u627e\u5230\u4f5c\u8005\u70baFrank de Brabander\u7684\u7a0b\u5f0f\u5eab\u5f8c(\u5927\u7d04\u5728\u4e2d\u9593\u7684\u4f4d\u7f6e)\uff0c\u9ede\u9078\u53f3\u5074\u7684\u5b89\u88dd\u5373\u53ef\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604237268-1082413239-g.png?resize=841%2C472&#038;ssl=1\" alt=\"\" width=\"841\" height=\"472\"\/><figcaption class=\"wp-element-caption\">\u5b89\u88dd\u6db2\u6676\u87a2\u5e55\u7a0b\u5f0f\u5eab<\/figcaption><\/figure>\n\n\n\n<p>\u5b8c\u6210\u5b89\u88dd\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u958b\u555f\u4e0b\u9762\u7684HelloWorld\u7a0b\u5f0f\uff0c\u88e1\u9762\u7684\u95dc\u9375\u8a9e\u6cd5\u5305\u62ec\uff1a<\/p>\n\n\n\n<p>1.\u6307\u5b9aLCD\u4f4d\u5740\u8207\u898f\u683c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>LiquidCrystal_I2C lcd(0x27,16,2);<\/code><\/pre>\n\n\n\n<p>\u5176\u4e2d0x27\u4ee3\u8868\u6211\u5011LCD\u7684I2C\u4f4d\u5740\uff0c\u6b64\u8655\u8b80\u8005\u61c9\u586b\u5165\u4e0a\u65b9i2c scan\u6642\u6240\u7372\u5f97\u7684\u4f4d\u5740\uff0c\u800c16\u4ee3\u8868\u6211\u5011\u7684LCD\u662f\u4e00\u884c16\u500b\u5b57\uff0c2\u4ee3\u8868\u662f2\u6392\u5b57\u3002<\/p>\n\n\n\n<p>2.LCD\u521d\u59cb\u5316\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lcd.init();<\/code><\/pre>\n\n\n\n<p>\u4ee3\u8868lcd\u521d\u59cb\u5316\uff0cLCD\u4f7f\u7528\u524d\u5fc5\u9808\u8981\u57f7\u884c\u4e00\u6b21\u521d\u59cb\u5316\u3002<\/p>\n\n\n\n<p>3.\u958b\u555f\u80cc\u5149\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lcd.backlight();<\/code><\/pre>\n\n\n\n<p>\u4ee3\u8868\u958b\u555fLCD\u80cc\u5149\uff0c\u82e5\u7f3a\u5c11\u9019\u53e5LCD\u7121\u80cc\u5149\u986f\u793a\u3002<\/p>\n\n\n\n<p>4.\u79fb\u52d5\u6e38\u6a19<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lcd.setCursor(3,0);<\/code><\/pre>\n\n\n\n<p>\u4ee3\u8868\u5c07\u6e38\u6a19\u79fb\u81f3\u7b2c0\u884c\uff0c\u7b2c3\u500b\u5b57\uff08\u4e0b\u5716\u25cbA\u7684\u4f4d\u7f6e\uff09\uff0c\u986f\u793a\u6587\u5b57\u524d\u8981\u5148\u5229\u7528\u9019\u500b\u6307\u4ee4\u6307\u5b9a\u5f9e\u4f55\u8655\u958b\u59cb\u986f\u793a\u6587\u5b57\u3002<\/p>\n\n\n\n<p>5.\u5370\u51fa\u6587\u5b57<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lcd.print(\"Hello, world!\");<\/code><\/pre>\n\n\n\n<p>\u5247\u662f\u5728\u6b65\u9a5f4\u6307\u5b9a\u7684\u6e38\u6a19\u8655\u5370\u51fa\u6587\u5b57\uff0c\u9019\u88e1\u8981\u6ce8\u610f\u82e5\u5370\u51fa\u7684\u6587\u5b57\u8d85\u904e\u87a2\u5e55\u5bec\u5ea6\uff0c\u4e26\u4e0d\u6703\u81ea\u52d5\u63db\u884c\uff0c\u6703\u76f4\u63a5\u88ab\u96b1\u85cf\uff0c\u56e0\u6b64\u986f\u793a\u6642\u8b80\u8005\u9808\u81ea\u884c\u8a08\u7b97\u6e38\u6a19\u8207\u6587\u5b57\u6578\u91cf\u3002<\/p>\n\n\n\n<p>6.\u6e05\u9664\u5167\u5bb9<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lcd.clear();\/\/\u6e05\u9664\u6240\u6709\u5167\u5bb9<\/code><\/pre>\n\n\n\n<p>\u6e05\u9664LCD\u5167\u7684\u5167\u5bb9\uff0c\u7b49\u5019\u986f\u793a\u66f4\u65b0\u5f8c\u7684\u8cc7\u6599\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604237277-3659602753-g.png?resize=839%2C389&#038;ssl=1\" alt=\"\" width=\"839\" height=\"389\"\/><figcaption class=\"wp-element-caption\">LCD\u6e38\u6a19\u4f4d\u7f6e<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-lcd\">4.LCD\u5b8c\u6574\u7a0b\u5f0f\u78bc<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;Wire.h&gt; \n#include &lt;LiquidCrystal_I2C.h&gt;\nLiquidCrystal_I2C lcd(0x27,16,2);\/\/\u8a2d\u5b9aLCD\u4f4d\u5740\u8207\u5927\u5c0f\n\nvoid setup()\n{\n  lcd.init();   \/\/\u521d\u59cb\u5316LCD\n  lcd.backlight(); \/\/\u958b\u555fLCD\u80cc\u5149\n}\n\nvoid loop(){\n  lcd.setCursor(3,0);\/\/\u8a2d\u5b9a\u6e38\u6a19\n  lcd.print(\"Hello, world!\");\/\/\u5370\u51fa\u6587\u5b57\n  lcd.setCursor(2,1);\/\/\u8a2d\u5b9a\u6e38\u6a19\n  lcd.print(\"ESP32 LCD Test!\"); \/\/\u5370\u51fa\u6587\u5b57\n  delay(1000);\n  lcd.clear();\/\/\u6e05\u9664\u6240\u6709\u5167\u5bb9\n  delay(1000);\n\n}<\/code><\/pre>\n\n\n\n<p>\u82e5\u60a8\u7684LCD\u4e26\u6c92\u6709\u51fa\u73feHello World\u5b57\u6a23\uff0c\u90a3\u8acb\u60a8\u4f9d\u5e8f\u672c\u7bc0\u4e00\u958b\u59cb\u6642\u6240\u8aaa\u660e\u7684LCD\u4f7f\u7528\u6ce8\u610f4\u500b\u4e8b\u9805\u9032\u884c\u6aa2\u67e5\uff0c\u6392\u9664\u554f\u984c\u3002<br>\u7576\u986f\u793a\u6c92\u554f\u984c\u7684\u8a71\uff0c\u5c31\u53ef\u4ee5\u5c07\u5169\u96bb\u7bc4\u4f8b\u7a0b\u5f0f\u5408\u5728\u4e00\u8d77\uff0c\u4e5f\u5c31\u662f\u628aDHT11\u6eab\u6fd5\u5ea6\u7684DHT11default\u7a0b\u5f0f\u78bc\u53caLCD\u7684HelloWorld\u7d50\u5408\u5728\u4e00\u8d77\uff0c\u4ee5\u672c\u4f8b\u800c\u8a00\uff0c\u6211\u5011\u5c07\u8f03\u70ba\u7c21\u55ae\u7684LCD HelloWorld\u7a0b\u5f0f\u7684setup()\u3001loop()\u3001\u4ee5\u53ca\u6700\u4e0a\u65b9\u5ba3\u544a\u5340\u90fd\u642c\u5230DHT11default\u4e2d\uff0c\u6574\u5408\u5f8c\u7684\u7a0b\u5f0f\u5982\u4e0b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;SimpleDHT.h&gt;\n#include &lt;Wire.h&gt;\n#include &lt;LiquidCrystal_I2C.h&gt;\nint pinDHT11 = 14;\nSimpleDHT11 dht11(pinDHT11);\nLiquidCrystal_I2C lcd(0x27, 16, 2);\nvoid setup() {\n  Serial.begin(115200);\n  lcd.init();\n  lcd.backlight();\n}\n\nvoid loop() {\n Serial.println(\"=================================\");\n  Serial.println(\"Sample DHT11...\");\n  byte temperature = 0;\n  byte humidity = 0;\n  int err = SimpleDHTErrSuccess;\n  if ((err = dht11.read(&amp;temperature, &amp;humidity, NULL)) != SimpleDHTErrSuccess) {\n    Serial.print(\"Read DHT11 failed, err=\"); Serial.println(err); delay(1000);\n    return;\n  }\n\n  Serial.print(\"Sample OK: \");\n  Serial.print((int)temperature); Serial.print(\" *C, \");\n  Serial.print((int)humidity); Serial.println(\" H\");\n  lcd.clear();\n  lcd.setCursor(0, 0); \/\/\u5148\u8a2d\u5b9a\u6e38\u6a19\n  lcd.print(\"Temperature: \");\/\/\u986f\u793a\u6eab\u5ea6\n  lcd.print((int)temperature);\n  lcd.print(\"c\");\n  lcd.setCursor(0, 1); \/\/\u986f\u793a\u6ebc\u5ea6\n  lcd.print(\"Humidity:    \");\n  lcd.print((int)humidity);\n  lcd.print(\"%\");\n  delay(1500);\n}<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/pic.pimg.tw\/youyouyou\/1604237308-1489308709-g.png?resize=841%2C378&#038;ssl=1\" alt=\"\" width=\"841\" height=\"378\"\/><figcaption class=\"wp-element-caption\">DHT11\u7d50\u5408LCD\u87a2\u5e55\u6210\u679c<\/figcaption><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"htoc-111111111\" style=\"font-size:clamp(16.293px, 1.018rem + ((1vw - 3.2px) * 0.68), 25px);\">\u5ef6\u4f38\u95b1\u8b80<\/h4>\n\n\n\n<p class=\"has-background has-medium-font-size\" style=\"background-color:#f2f2f2\">????   <a href=\"https:\/\/www.nmking.io\/index.php\/2022\/11\/21\/esp32_ch1-15\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u7b2c\u5341\u7bc7 ESP32 WiFi\u7db2\u8def\u9023\u7dda\u5373\u6642PM2.5\u986f\u793a\u5668<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6eab\u6fd5\u5ea6\u611f\u6e2c\u662f\u7269\u806f\u7db2\u5be6\u9a57\u91cd\u8981\u7684\u4e00\u74b0\uff0c\u6536\u96c6\u5927\u91cf\u7684\u8cc7\u6599\u53ef\u4ee5\u4e86\u89e3\u6eab\u6fd5\u5ea6\u6578\u503c\u5c0d\u74b0\u5883\u7684\u5f71\u97ff\uff0c\u4f8b\u5982\u5075\u6e2c\u5009\u5eab\u7684\u6eab\u6fd5\u5ea6 \u6211\u7684ES [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1,29],"tags":[],"class_list":["post-531","post","type-post","status-publish","format-standard","hentry","category-esp32","category-esp32-started"],"blocksy_meta":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/posts\/531","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/comments?post=531"}],"version-history":[{"count":4,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/posts\/531\/revisions"}],"predecessor-version":[{"id":933,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/posts\/531\/revisions\/933"}],"wp:attachment":[{"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/media?parent=531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/categories?post=531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nmking.io\/index.php\/wp-json\/wp\/v2\/tags?post=531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}