自讀書時候認識磁石有南/北極...外,往後是什少再接觸其理論的,現連關於磁場方面的什麼單位也說不出了 玩過吓Arduino亦發現 ...

This post describes the preliminary results of a small Hall-Sensor module. This is widely known as KY-024 module. The KY-024 sensor module I got from an online retailer is inexpensive, and the ...