I was looking for FOC controllers, but they are all too expensive. I need it for hoverboard motors. I saw a thread about attempts to install simple FOC on the hoverboard’s main board, but it seemed to get nowhere.
Sure, you’ll find plenty of succesfull applications by searching the tag hoverboard
Most threads lead to nowhere, because back then we haven’t used the forum feature to vote for best answer, but most problems were solved IMHO