Testing trailer brake controller....
Been working on this for days. I'm about ready to start screaming. (FYI, I am not in a good mood and any trolls looking to unload shaming or sarcasm or just generally embark on some kind of self-serv...
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Hall affect will measure any magnetic field, whether it is from a electro-magnet or a permanent magnet. Both my iphone and my android detected a small magnet.
