About this ebook
這本書以哈爸開啟的【開源公益專案】LASS環境感測網路系統(一般稱Location Aware Sensor System ：LASS)為核心思想，將目前物聯網(Internet of Thing：IOT)最熱門的主題，PM2.5空氣粒子感測技術，透過粒子感測器的讀取、LCD顯示幕顯示機器狀態等，進行產品開發，進而透過網際網路來監控『PM2.5空氣粒子的濃度』的行為，達到物聯網的概念。
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About the author
曹永忠 (Yung-Chung Tsao) ，目前為自由作家，專研於軟體工程、軟體開發與設計、
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