wow, so much discussion on this little module. I guess at the end of the day by using this module it'll tell you which motor is the best without using the ESC.
Good thing is it's the size and adaptability to any motor tester. Last thing you need is to haul another piece of equipment or buy another.
I got a glimpse of it working with the MM Motor Master. No additional wires or sensors required and that is sweet.
I don't see how this module would cost a lot of money. Who knows, as it's still in it's early stage as a prototype.
I got some better close up of the module which I'll post later.