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Obniżka! Pololu 1418 - Zumo Chassis Kit (No Motors) Zobacz większe

Pololu 1418 - Zumo Chassis Kit (No Motors)

Zumo Chassis Kit (No Motors)

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ID: 195667

71,00 zł brutto (23% VAT)
57,72 zł netto

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Zumo Chassis Kit (No Motors)

The Pololu Zumo chassis is a small, tracked robot platform that is less than 10 cm on each side, allowing it to qualify for Mini Sumo competitions. The main body is composed of black ABS and features a compartment for four AA batteries and sockets for two micro metal gearmotors. It ships as a kit with two silicone tracks, two drive and two idler sprockets, a 1/16” acrylic mounting plate, and mounting hardware. (Motors and batteries are not included.)


Overview

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. Assembly instructions are available in the user’s guide under the resources tab.

Pololu Zumo chassis kit components.

Motors (not included)

Micro metal gearmotor.

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.

We recommend the 50:1, 75:1, or 100:1 HP or non-HP motors for use with this chassis, but 30:1 micro metal gearmotors might also work. Note that non-HP 30:1 motors do not offer much torque, so they are not very practical for sumobots, and 30:1 HP motors will make the robot extremely fast and difficult to control. The following table shows theoretical limits based on the motor specifications. Note that the specifications are for 6V operation, while four NiMH AA cells will typically provide less than 5V.

Micro Metal
Gearmotor
Speed
@ 6V
Top Zumo Speed
@ 6V
Stall Torque
@ 6V
Stall Current
@ 6V
100:1 HP320 RPM25 in/s(65 cm/s)30 oz·in1600 mA
75:1 HP400 RPM32 in/s(80 cm/s)22 oz·in1600 mA
50:1 HP625 RPM50 in/s(130 cm/s)15 oz·in1600 mA
30:1 HP1000 RPM80 in/s(200 cm/s)9 oz·in1600 mA
100:1120 RPM10 in/s(25 cm/s)12 oz·in360 mA
75:1170 RPM14 in/s(35 cm/s)9 oz·in360 mA
50:1250 RPM20 in/s(50 cm/s)7 oz·in360 mA
30:1440 RPM35 in/s(90 cm/s)4 oz·in360 mA

We recommend the DRV8833 motor driver carrier or qik 2s9v1 for use with this chassis.

Batteries (not included)

This chassis works with four AA batteries. We recommend using rechargeable AA NiMH cells, which results in a nominal voltage of 4.8 V (1.2 V per cell). When the batteries are fully charged, they will be well above 5 V, and when they are almost spent, they will be well below 5 V. As such, you might consider using a step-up/step-down voltage regulator to power your logic, since this will hold your logic voltage steady at 5 V, no matter if your battery voltage is above or below 5 V. You can also use alkaline cells, which would nominally give you 6V, but that voltage would drop depending on the load.

Basic sumo blade (not included)

We carry a basic stainless steel sumo blade that can be mounted to front of the Zumo chassis. With this blade, the Zumo chassis can push around objects, such as other MiniSumo robots. You can also use the design file for this basic blade as the starting point for a custom sumo blade.

Basic sumo blade mounted on a Zumo chassis.

Dimensions

Fully assembled, the Zumo chassis is 98 mm wide, 86 mm long, and 39 mm high, with approximately 5 mm of ground clearance.

Pololu Zumo chassis, assembled top view with dimensions, shown with motors.
Pololu Zumo chassis, assembled front view with dimensions.

Since each side is smaller than 10 cm, this chassis meets Mini-Sumo size requirements. The front screws used to mount the acrylic plate to the chassis can also be used to mount a front scoop that can extend up to 14 mm before exceeding the Mini Sumo limits. The assembled Zumo chassis weighs approximately 210 g with motors and batteries.

Example robot based on the Pololu Zumo chassis next to a Parallax SumoBot.

We are also working on controller electronics and other components to make this into a complete sumo robot, but those will not be available until later in the year.

People often buy this product together with:

DRV8833 Dual Motor Driver CarrierDRV8833 Dual Motor Driver Carrier
Basic Sumo Blade for Zumo ChassisBasic Sumo Blade for Zumo Chassis
50:1 Micro Metal Gearmotor HP50:1 Micro Metal Gearmotor HP

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