HERCHR Universal U Type Holder Mounting Bracket Fit for Most Motor Encoders, Metal, 1.5''/38mm

DC motors are great for a lot of reasons easy to buy easy to control inexpensive and popular there is one problem though [Music] if you wants to get series of your robots or projects you need to control movement very precisely you either want to control the speed of the motor position of the motor or both at the same time if you have to theoretically identical motors they may not work exactly as they should and your robot may turn even though it should go straight that's a big problem in some of my projects imagine a robot like Roomba or just tiny micro mouse robots that go through the maze they really need to know why there are and go perfectly straight to achieve this kind of precision we may use stepper motors those are used in 3d printers but in robotics most of the time they are not that useful for a lot of various reasons so what's the alternative a DC motor but with an encoder wh