January 2024
Beginner to intermediate
560 pages
8h 38m
Japanese
Content preview from Raspberry Piクックブック 第4版
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17章 モノのインターネットThe Internet of Things
モノのインターネット（IoT）とは、現在急激に発達しつつある、インターネットに接続されたデバイス（モノ）のネットワークのことだ。これはブラウザーを利用するコンピューターだけではなく、家電製品やウェアラブルやポータブル機器の数が増え続けていることを意味する。これには、スマート家電や照明器具からセキュリティシステムまで、ありとあらゆるホームオートメーション機器が含まれる。さらにはインターネットから操作可能なペット給餌機など、あまり実用的ではないが面白いプロジェクトもある。
この章では、Raspberry Piを使ってIoTに参加するさまざまな方法について学んでいこう。
レシピ17.1：ウェブインターフェイスからGPIO出力を制御する
●課題 Raspberry Piのウェブインターフェイスを使って、汎用入出力（GPIO）ピンを制御したい。
●解決 bottlePythonサーバーライブラリー［レシピ7.17］を使って、GPIOポートを制御するHTMLインターフェイスを作成する。
このレシピの制作には、以下のものが必要だ。
- ブレッドボードとジャンパー線（付録Aの「プロトタイピング用の器材とキット」を参照）
- 1kΩの抵抗を3本（付録Aの「抵抗とコンデンサー」を参照）
- LEDを3個（付録Aの「光エレクトロニクス」を参照）
- 押しボタンスイッチ（付録Aの「その他」を参照）
図17-1に、ブレッドボード上の実体配線図を示す。
図17-1 ウェブページからGPIO出力を制御するブレッドボード実体配線図
ブレッドボードを使う代わりに、Raspberry SquidとSquidボタンを接続することもできる ...
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