August 2017
Intermediate to advanced
272 pages
5h 32m
Chinese
Content preview from Node.js物聯網裝置開發
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基本零件
|
99
後續章節會在適當的地方介紹各種 Tessel 模組，就目前而言，讀者只要知道，Tessel 連
接埠的作用是讓我們可以輕易地連接外部零件。舉例而言，模組接頭的腳位，可用來連
接感測器或致動器，與之傳輸溝通。
基本零件
現在，我們已經學會各種電路與電子零件的連接方式，這一節要再靠近一點，仔細介紹
不同電子零件的差異。電子零件可區分成「被動式」和「主動式」。
被動式電子零件有點兒類似於機械零件，如散熱片，其主要作用是驅散熱量。被動式電
子零件，諸如電阻或可變電阻，常用於產生參考電壓。相對的，主動式電子零件則用於
供應電源以啟動燈光、聲音、或動作。
零件模組大都需要某種驅動程式軟體，方能運作。若以 Node.js 來開發嵌入式專案的
話，可至網站
http://npmjs.com
找到大部分的驅動程式。
圍繞著電子元件，還有很多其他概念，將會影響你為硬體撰寫程式的實務工作，後續小
節會逐一闡述。
規格書
電子零件的詳細資訊，都記載於規格書（datasheet），裡頭會提供數值，標示出零件與
裝置運作時的限制條件與極限。
如今已是網路時代，絕大部分的規格書，都可從網路上下載，也有幾個特別為尋找規格
書而建立的搜尋引擎，如 Parts.io（
http://parts.io
）。另外，請務必瀏覽 SparkFun（
http://
sparkfun.com
）與 Adafruit（
http://adafruit.com
）等廠商的網站，他們銷售的產品都附帶
著非常豐富的教學文件，幫助你把抽象難懂的規格書，轉譯成易讀易懂的說明描述。 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.