A used Servo Motor with an attached encoder. High Torque motor with 18 inch wire 200 Steps per Rev.
This is a ROS programmable autonomous SLAM robot prebuilt kit that can be controlled via Gamepad. The MarvelMind IPS (Indoor Positioning System) provides indoor navigation. ODROID-XU4 SBC provides the most flexible platform possible.
This is an Enclosed 4-wheel drive remote control robot kit. It uses four powerful wheelchair motors and the inside robot cavity has plenty of room for electronics.