DC Motor with Encoder and Arduino
I'm trying out to connect a DC motor with Arduino and ROS, but I'm not sure where to start and how to understand the idea behind the encoder. I know that there are a ton of tutorials in the internet that I can search for, but none of them offer a basic explanation of what value the encoder would offer and how to read, sketch the circuitry. Any pointers in this direction would be definitely helpful for me. Could you please help me her?