ROSの基本的なデータの受け渡し
ROSのパッケージを作成して,Publisher,Subscriberを実行する.
課題
Terminal上に以下の文字列が表示されるか確認(スクショ?未定)
[ INFO] 1251943144.400553000: Received [Hello there! This is message [1]]
[ INFO] 1251943144.600712000: Received [Hello there! This is message [2]]
[ INFO] 1251943144.801003000: Received [Hello there! This is message [3]]
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