The Pololu Zumo chassis kit contains the components necessary to build a small, high-performance tracked robot platform that is compact enough to qualify for Mini Sumo competitions. Each side of the chassis has an idler sprocket that spins freely and a drive sprocket that connects to a micro metal gearmotor (not included). The main body is composed of ABS plastic and has sockets for two micro metal gearmotors and a compartment for four AA batteries (not included). The battery compartment terminals protrude through the chassis and can be accessed from the top side. A black acrylic plate is included with the chassis. This plate holds the motors in place and can be used for mounting your electronics, such as your microcontroller, motor drivers, and sensors.
The Zumo chassis uses two motors, one for each tread. The ideal motors for your robot depend on your desired torque, speed, and current draw, so motors are not included with the chassis. If you have limited ability to supply current, we recommend using lower-power non-HP motors, which have a stall current of 360 mA at 6 V; if you have the ability to deliver more current, the HP micro metal gearmotors offer more torque and speed for the same gear ratio.
Micro Metal Gearmotor
This gearmotor is a miniature (0.94" x 0.39" x 0.47"), high-power brushed DC motor with 75:1 metal gearbox, similar to Sanyo’s popular 12 mm gearmotors. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft.
This tiny breakout board for TI’s DRV8833 dual motor driver can deliver 1.2 A per channel continuously (2 A peak) to a pair of DC motors.
The router is the central controller of the indoor GPS system. It communicate via USB with the dashboard and with the beacons, wirelessly in ISM band. Indoor Positioning System (IPS)
Use these roll pins to fix sprockets to a shaft and keep them locked in place.