Possible to control ESCs and BLDC motors without potentiostat?

Hi, I am currently building an underwater ROV for a school project and i’'m working on an arduino code attempting to control BLDC motors and ESCs. However, based on what I have researched, most of the open source codes require the use of a pontentiostat. Is it possible to control ESCs and BLDC motors without potentiostat and maybe instead using inputs from the serial monitor? Thanks in advance.Smile