DHT22

Raspberry Pi 3 に付けた温湿度センサーを再検証

　前回行った飽和塩法による DHT22 の湿度センサー部検証ではファンの回転有無で湿度の変化が見られたので最終的に納得のいく物では無かった。そこで今回はダイソーで密閉容器として「シリコンパッキンの付い...

2019.06.05 - 10:10

DHT22 の湿度センサー精度を飽和塩法で確認する

　昨日書いた記事では Raspberry Pi 3 に DHT22 を接続して Munin を用いたグラフ化まで一通りの作業が完了した。一つ心残りだった湿度センサーの補正値は正しいのか否かをちょっと面...

2019.05.21 - 07:33

Raspberry Pi 3 + CentOS 7 + DHT22 で部屋の温度と湿度をグラフ化する

　以前から Raspberry Pi をもう少し "らしく" 使いたいなと思っていた。GPIO のヘッダピンが出ているからとセンサー系の何かを使った物…… で "温度と湿度のセンサー" が思いついた。...

2019.06.10 - 13:32

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