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pm2.5空氣品質感測器製作研習

3-1 四 LED 空氣汙染等級顯示

    將4個LED 綠、黃、紅、藍(代表紫)接上麵包板，利用Arduino Digital 接腳 8、9、10、11，來控制燈號明滅，代表教育部空汙旗的四個顏色標示。

    麵包板需先將電源接上，由Arduino的3.3v 及 5v，分別接到麵包板上下的紅色標示區域，GND也分別各拉一條到藍色標示區域，如此電路若需要電源或接地，只要接到旁邊即可。

需要材料：

    Arduino uno 開發版 * 1

    小麵包版 * 1

    長杜邦線 * 4

    短杜邦線 * 4

    LED (綠、黃、紅、藍) * 4

    麵包板跳線 灰色 * 3

    麵包板跳線 藍色 * 1

    (通常麵包板跳線同一長度顏色相同，在這次材料中灰色跳2格，藍色跳5格)

LED沒串接電阻容易燒壞，請自行加裝一個220OM的電阻，可直接用電阻取代藍色跳線。

參考資料：

Arduino第一課：LED串流電阻的學問

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未知: Array and string offset access syntax with curly braces is deprecated 在檔案中的第 /include/functions.encoding.php 列 40
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