{"id":18883,"date":"2018-12-01T09:00:50","date_gmt":"2018-12-01T00:00:50","guid":{"rendered":"http:\/\/www.techscore.com\/blog\/?p=18883"},"modified":"2018-11-28T13:18:45","modified_gmt":"2018-11-28T04:18:45","slug":"co2","status":"publish","type":"post","link":"https:\/\/www.techscore.com\/blog\/2018\/12\/01\/co2\/","title":{"rendered":"\u304a\u3046\u3061\u306e\u4e8c\u9178\u5316\u70ad\u7d20\u6fc3\u5ea6\u3092\u8a08\u3063\u3066\u307f\u308b"},"content":{"rendered":"
\u3053\u308c\u306f \ud83d\ude3aTECHSCORE Advent Calendar 2018\ud83d\ude3a<\/a> \u306e1\u65e5\u76ee\u306e\u8a18\u4e8b\u3067\u3059\u3002<\/p>\n \u5bb6\u306e\u7a93\u3092\u9589\u3081\u304d\u3063\u3066\u3044\u308b\u3068\u7a7a\u6c17\u304c\u60aa\u304f\u306a\u308a\u307e\u3059\u304c\u3001\u4e00\u4f53\u3069\u3093\u3060\u3051\u7a7a\u6c17\u60aa\u3044\u306e\u304b\u306a\u3093\u3068\u306a\u304f\u6c17\u306b\u306a\u3063\u3066\u3044\u307e\u3057\u305f\u3002 \u3068\u308a\u3042\u3048\u305a\u3001\u3069\u3046\u3044\u3063\u305f\u3082\u306e\u306b\u306a\u3063\u305f\u304b\u5148\u306b\u51fa\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002 \u8cfc\u5165\u5148\u306a\u3069\u306f\u5f8c\u306b\u8f09\u305b\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n \u898b\u305f\u307e\u307e\u3067\u3059\u3002 MH-Z19 \u306f\u3001\u30d6\u30ec\u30c3\u30c9\u30dc\u30fc\u30c9\u306a\u3069\u306e\u30d4\u30c3\u30c1\u3068\u306f\u5408\u3063\u3066\u3044\u306a\u3044\u3088\u3046\u306a\u306e\u3067\u3001\u82e5\u5e72\"\u30cf\u306e\u5b57\"\u306b\u306a\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002 \u63a5\u7d9a\u3057\u305f\u3089\u3001\u3042\u3068\u306f\u66f8\u304d\u8fbc\u3080\u3060\u3051\u3067\u3059\u3002<\/p>\n \u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u4e0b\u306b\u63b2\u8f09\u3057\u307e\u3059\u304c\u3001\u305d\u306e\u307e\u307e\u3067\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u3067\u304d\u307e\u305b\u3093\u3002 \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066\u3044\u308b\u3053\u3068\u3082\u3042\u308a\u3001\u7279\u306b\u96e3\u3057\u3044\u3053\u3068\u3082\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n MH-Z19 \u3067 CO2 \u8a08\u6e2c\u3057\u305f\u5024\u3092 OLED \u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u306b\u8868\u793a\u3057\u3001PC \u304b\u3089\u3082\u5024\u3092\u53d6\u5f97\u3067\u304d\u308b\u3088\u3046\u306b\u30b7\u30ea\u30a2\u30eb\u51fa\u529b\u3082\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n MH-Z19 \u306f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306b\u3088\u308b\u30b7\u30ea\u30a2\u30eb\u63a5\u7d9a\u3001OLED \u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u306f I2C \u306b\u3088\u3063\u3066\u63a5\u7d9a\u3055\u308c\u307e\u3059\u3002 \u307e\u305f\u3001\u96a0\u3057\u6a5f\u80fd\u3089\u3057\u304f\u602a\u3057\u3044\u5024\u306a\u306e\u3067\u3059\u304c\u3001\u6e29\u5ea6\u3082\u308f\u304b\u308b\u3088\u3046\u306a\u306e\u3067\u53d6\u5f97\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n \u30b3\u30de\u30f3\u30c9\u4f8b:<\/p>\n \u4eca\u56de\u3001\u30ad\u30e3\u30ea\u30d6\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u9762\u5012\u306a\u3053\u3068\u3082\u3042\u3063\u3066\u3001\u624b\u52d5\u3067\u306f\u7279\u306b\u884c\u306a\u3063\u3066\u3044\u307e\u305b\u3093\u3002 \u3061\u306a\u307f\u306b\u81ea\u52d5\u30ad\u30e3\u30ea\u30d6\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u6709\u52b9\u306e\u6a5f\u80fd\u3067\u300124 \u6642\u9593\u6bce\u306b\u305d\u306e\u9593\u306e\u6700\u4f4e\u5024\u3092 400ppm \u3068\u307f\u306a\u3057\u3066\u304f\u308c\u308b\u3088\u3046\u3067\u3059\u3002 \u79c1\u304c\u8cfc\u5165\u3057\u305f\u30da\u30fc\u30b8\u3068\u691c\u7d22\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u8f09\u305b\u307e\u3059\u3002 Arduino Nano \u4e92\u63db\u6a5f\u306f\u3069\u3053\u306e\u3054\u5bb6\u5ead\u306b\u3082\u3042\u308b\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u7701\u7565\u3057\u307e\u3059\u3002<\/p>\n \u307e\u305f\u3001MH-Z19 \u306e\u4ed5\u69d8\u306f\u3053\u3061\u3089<\/a>\u306e PDF \u306b\u306a\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n \u90e8\u5c4b\u306e\u30c9\u30a2\u3092\u9589\u3081\u3066\u5bdd\u308b\u3068\u3001\u8d77\u304d\u308b\u9803\u306b\u306f 1,000ppm \u3092\u8d8a\u3048\u3066\u3044\u308b\u3068\u3044\u3046\u6b8b\u5ff5\u306a\u4e8b\u306b\u306a\u3063\u3066\u3044\u307e\u3057\u305f\u3002 \u30aa\u30d5\u30a3\u30b9\u3067\u3082\u8a08\u6e2c\u3057\u3066\u307f\u307e\u3057\u305f\u304c\u3001\u7a7a\u8abf\u306e\u304a\u304b\u3052\u304b 1,000ppm \u8d8a\u3048\u308b\u3053\u3068\u306f\u306a\u3044\u3088\u3046\u3067\u3059\u3002 \u3053\u308c\u304c\u4e8c\u9178\u5316\u70ad\u7d20\u3068\u540c\u6642\u306b\u30ab\u30ef\u30a4\u30a4\u3092\u751f\u6210\u3059\u308b\u751f\u7269\u3067\u3059\u3002<\/p>\n \u672b\u6c38\u304f\u4e8c\u9178\u5316\u70ad\u7d20\u3092\u751f\u6210\u3057\u3066\u3044\u3063\u3066\u307b\u3057\u3044\u3067\u3059\u306d\u3002<\/p>\n \u56de\u8def\u56f3\u306f\u3001Fritzing<\/a> \u3067\u751f\u6210\u3057\u307e\u3057\u305f\u3002 \u3053\u308c\u306f \ud83d\ude3aTECHSCORE Advent Calendar 2018\ud83d\ude3a \u306e1\u65e5\u76ee\u306e\u8a18\u4e8b\u3067\u3059\u3002<\/p>\n \u304a\u3046\u3061\u306e\u4e8c\u9178\u5316\u70ad\u7d20\u6fc3\u5ea6\u3092\u8a08\u3063\u3066\u307f\u308b<\/p>\n \u5bb6\u306e\u7a93\u3092\u9589\u3081\u304d\u3063\u3066\u3044\u308b\u3068\u7a7a\u6c17\u304c\u60aa\u304f\u306a\u308a\u307e\u3059\u304c\u3001\u4e00\u4f53\u3069\u3093\u3060\u3051\u7a7a\u6c17\u60aa\u3044\u306e\u304b\u306a\u3093\u3068\u306a\u304f\u6c17\u306b\u306a\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u304a\u3046\u3061\u306e\u4e8c\u9178\u5316\u70ad\u7d20\u6fc3\u5ea6\u3092\u8a08\u3063\u3066\u307f\u308b<\/h1>\n
\n\u3068\u306f\u3044\u3048\u8a08\u6e2c\u5668\u306f\u9ad8\u984d\u3002\u30bb\u30f3\u30b5\u30fc\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u63a2\u3057\u3066\u81ea\u4f5c\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002
\n\u5bd2\u3044\u6642\u671f\u3067\u3059\u304c\u3001\u4e8c\u9178\u5316\u70ad\u7d20\u6fc3\u5ea6\u304c\u308f\u304b\u308c\u3070\u6700\u77ed\u306e\u63db\u6c17\u3082\u3067\u304d\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n\u5b8c\u6210\u54c1\u306f\u3053\u3061\u3089<\/h1>\n
\n\u30e6\u30cb\u30d0\u30fc\u30b5\u30eb\u57fa\u677f\u306b\u5404\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u306f\u3093\u3060\u4ed8\u3051\u3057\u3066\u3001\u30af\u30e9\u30d5\u30c8\u7d19\u3067\u30b1\u30fc\u30b9\u3092\u4f5c\u308a\u307e\u3057\u305f\u3002<\/p>\n<\/a><\/p>\n
\u4f7f\u7528\u3059\u308b\u90e8\u54c1<\/h1>\n
\n
\u63a5\u7d9a\u65b9\u6cd5<\/h1>\n
\n\u30af\u30ea\u30c3\u30af\u3057\u3066\u3001\u62e1\u5927\u3057\u3066\u898b\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/a><\/p>\n
\n\u307e\u305f\u2191\u306b\u793a\u3055\u308c\u3066\u3044\u308b\u30db\u30fc\u30eb\u4ee5\u5916\u306b\u30b3\u30cd\u30af\u30bf\u304c\u4ed8\u3044\u3066\u3044\u308b\u3053\u3068\u3082\u3042\u308b\u3088\u3046\u3067\u3059\u304c\u3001\u6298\u308a\u53d6\u3063\u3066\u3057\u307e\u3063\u3066\u3082\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002
\nOLED \u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u3084 Arduino Nano \u306f\u7d20\u76f4\u306b\u63a5\u7d9a\u3067\u304d\u307e\u3059\u3002<\/p>\n\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u66f8\u304d\u8fbc\u307f<\/h1>\n
\nArduino IDE \u306e\u30e1\u30cb\u30e5\u30fc\u306e\u300c\u30c4\u30fc\u30eb\u2192\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u7ba1\u7406\u300d\u304b\u3089\u4ee5\u4e0b\u306e\u4e8c\u3064\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n
\u30b3\u30fc\u30c9\u6982\u8981<\/h2>\n
\n\u3082\u3057\u3001MH-Z19 \u306e\u4f7f\u7528\u30d4\u30f3\u3092\u5909\u3048\u305f\u3044\u5834\u5408\u306f\u3001MHZ19Serial(A0, A1)<\/code> \u3092\u5909\u66f4\u3059\u308c\u3070\u826f\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/h2>\n
#include <SoftwareSerial.h>\n#include<Wire.h>\n#include<Adafruit_GFX.h>\n#include<Adafruit_SSD1306.h>\n\nAdafruit_SSD1306 display(-1);\n\nSoftwareSerial MHZ19Serial(A0, A1);\n\nbyte Request[9] = {0xFF, 0x01, 0x86, 0x00, 0x00, 0x00, 0x00, 0x00, 0x79};\n\nstruct Response {\n word header;\n byte vh;\n byte vl;\n byte temp;\n byte tails[4];\n} __attribute__((packed));;\n\nvoid setup() {\n MHZ19Serial.begin(9600);\n Serial.begin(115200);\n display.begin(SSD1306_SWITCHCAPVCC, 0x3C);\n}\n\nvoid loop() {\n struct Response response;\n\n MHZ19Serial.write(Request, sizeof Request);\n MHZ19Serial.readBytes((char *)&response, 9);\n\n if (response.header != 0x86ff) {\n return;\n }\n\n word ppm = (response.vh << 8) + response.vl;\n byte temp = response.temp - 40;\n\n display.clearDisplay();\n display.setTextSize(4);\n display.setTextColor(WHITE);\n display.setCursor(0, 0);\n display.println(ppm);\n display.setTextSize(2);\n display.setCursor(100, 13);\n display.println(temp);\n display.display();\n\n Serial.print(ppm);\n Serial.print(\" \");\n Serial.println(temp);\n delay(10000);\n}\n<\/pre>\n
\u30b7\u30ea\u30a2\u30eb\u63a5\u7d9a<\/h2>\n
Serial.print<\/code> \u306a\u3069\u3067\u66f8\u304d\u51fa\u3057\u3066\u3044\u308b\u60c5\u5831\u306f\u3001USB \u63a5\u7d9a\u3059\u308c\u3070 PC \u304b\u3089\u8aad\u307f\u3060\u305b\u307e\u3059\u3002
\n\u9023\u643a\u3057\u3066\u4f55\u304b\u3059\u308b\u306e\u3067\u3042\u308c\u3070\u3001Ruby \u306a\u3069\u3067\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u66f8\u304f\u3068\u3053\u308d\u3067\u3059\u304c\u3001\u3068\u308a\u3042\u3048\u305a\u78ba\u8a8d\u3059\u308b\u306b\u306f picocom<\/code> \u3084
screen<\/code> \u304c\u4fbf\u5229\u3067\u3059\u3002
\n\u30dc\u30fc\u30ec\u30fc\u30c8(115200)\u3092\u6307\u5b9a\u3059\u308b\u306e\u3060\u3051\u5fd8\u308c\u306a\u3044\u3067\u4e0b\u3055\u3044<\/p>\n$ picocom -b 115200 \/dev\/ttyUSB0\n$ screen \/dev\/ttyUSB0 115200\n<\/code><\/pre>\n
I2C \u306e\u30a2\u30c9\u30ec\u30b9\u306b\u3064\u3044\u3066<\/h2>\n
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);<\/code> \u306e
0x3c<\/code> \u3067\u3059\u304c\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u88cf\u9762(\u4e0b\u8a18\u5199\u771f\u306e\u8d64\u3044\u90e8\u5206)\u306b\u3042\u308b
IIC ADDRESS SELECT<\/code> \u304c
0x7A<\/code> \u3068
0x78<\/code> \u306e\u3069\u3061\u3089\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u304b\u3067\u5909\u308f\u308a\u307e\u3059\u3002
\n\u3053\u306e\u30a2\u30c9\u30ec\u30b9\u306f 1 bit \u5de6\u30b7\u30d5\u30c8\u3055\u308c\u305f\u3082\u306e\u3067\u30010x7A<\/code> \u306a\u3089
0x3d<\/code>\u3001
0x78<\/code> \u306a\u3089
0x3c<\/code> \u3068\u306a\u308a\u307e\u3059\u3002
\n\u30b7\u30d5\u30c8\u3055\u308c\u3066\u3044\u308b\u7406\u7531\u306f\u4e0d\u660e\u3067\u3059\u2026\u3002\u306a\u3093\u3067?<\/p>\n<\/a><\/p>\n
\u30ad\u30e3\u30ea\u30d6\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066<\/h1>\n
\n\u3057\u304b\u3057\u3001\u81ea\u52d5\u30ad\u30e3\u30ea\u30d6\u30ec\u30fc\u30b7\u30e7\u30f3\u6a5f\u80fd\u304c\u3042\u308b\u3089\u3057\u304f\u3001\u4e00\u5fdc\u305d\u308c\u3089\u3057\u3044\u5024\u304c\u53d6\u308c\u3066\u3044\u307e\u3059\u3002
\n\u63db\u6c17\u306a\u3069\u306b\u660e\u3089\u304b\u306b\u5f71\u97ff\u3092\u53d7\u3051\u3066\u3044\u308b\u306e\u3082\u308f\u304b\u308a\u307e\u3059\u3002
\n\u5c11\u306a\u304f\u3068\u3082\u5909\u5316\u306f\u308f\u304b\u308b\u306e\u3067\u5341\u5206\u4f7f\u3048\u305d\u3046\u3067\u3059\u3002<\/p>\n
\n\u4e00\u65e5\u4e00\u56de\u63db\u6c17\u305b\u3088\u3001\u3068\u3044\u3046\u3053\u3068\u3067\u3057\u3087\u3046!<\/p>\n\u8cfc\u5165\u5148<\/h1>\n
\n\u6d77\u5916\u306e\u901a\u8ca9\u30b5\u30a4\u30c8\u3067\u3059\u304c\u3001\u904b\u304c\u60aa\u304f\u306a\u3051\u308c\u3070\u304a\u3088\u305d 2 \u9031\u9593\u524d\u5f8c\u3067\u5c4a\u304d\u307e\u3059\u3002
\n\u9ad8\u304f\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u56fd\u5185\u306e\u30b5\u30a4\u30c8\u3067\u3082\u8cfc\u5165\u3067\u304d\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n
\u3069\u3093\u3060\u3051\u7a7a\u6c17\u304c\u60aa\u304b\u3063\u305f\u306e\u304b<\/h1>\n
\n\u5c31\u5bdd\u6642\u306b\u9650\u3089\u305a\u3001\u90e8\u5c4b\u306e\u30c9\u30a2\u3092\u9589\u3081\u3066\u3044\u308b\u3068\u30b0\u30f3\u30b0\u30f3\u4e8c\u9178\u5316\u70ad\u7d20\u6fc3\u5ea6\u304c\u4e0a\u3063\u3066\u3044\u304d\u307e\u3059\u3002
\n\u3057\u304b\u3057\u3001\u30c9\u30a2\u3092\u958b\u3051\u3066\u304a\u304f\u3060\u3051\u3067\u5927\u5206\u6539\u5584\u3055\u308c\u308b\u3088\u3046\u3067\u3059\u3002
\n\u5065\u5eb7\u306e\u305f\u3081\u306b\u30c9\u30a2\u306f\u958b\u3051\u653e\u3057\u3066\u304a\u3044\u305f\u307b\u3046\u304c\u826f\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n\u30aa\u30d5\u30a3\u30b9\u306e\u7a7a\u6c17<\/h1>\n
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