br-hardware-interface Node to interface with cortex-M0 hardware controller https://github.com/awesomebytes/control_toolbox_pid_tutorial https://answers.ros.org/question/249435/correct-way-to-use-diff_drive_controller-with-pid-control/ https://www.gobilda.com/5202-series-yellow-jacket-planetary-gear-motor-139-1-ratio-43-rpm-3-3-5v-encoder/