I'm curious about the motor size, shaft diameter? How hard would it be to change the motors out for stepper motors?

Motor outer diameter: 25mm; Shaft diameter: 4mm D shaft, you can check the content in the video for the specific size. If you need to replace the stepper motor, please pay attention to the appropriate size (hole position, length, etc.), otherwise it will not match.

Is anything else required to control, drive or program this

I actually purchased this one by mistake, but yes there is. Arduino, Raspberry pi, etc. The only electronics that come with this are the motors, which don't have any kind of connector on the wires. So you'll also need some soldering skill

Where would I find instructions on how to add a Arduino?

You will need an H bridge to provide voltage to you motors through an external battery, and use the Arduino to regulate this voltage. Then either use Bluetooth or RF to communication to the Arduino.

Where can I find replacement motors?

This should work fine. robotshop.com Part #RB-Sct-1019

Tank Chassis With Dc Motor | Desertcart UNITED STATES

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Description

🤖 Own the future of DIY robotics with unstoppable power and precision!

SPEED MEETS CONTROL - Equipped with powerful 2WD DC motors and high-grip engineering plastic tracks for smooth, agile, and low-noise movement across terrains.
MASTER ROBOTICS HANDS ON - Unleash your inner engineer with a fully DIY kit featuring step-by-step instructions that boost your programming and mechanical skills.
BUILT TO LAST BUILT TO PERFORM - Robust full-metal tank chassis engineered from premium aluminum alloy for unmatched durability and stability.
DESIGNED FOR THE FUTURE INNOVATOR - Perfect for millennials and young professionals eager to lead in robotics, AI, and IoT with a sleek, black, science-fiction inspired design.
PLUG PLAY WITH YOUR FAVORITE BOARDS - Seamlessly compatible with Arduino, Raspberry Pi, Jetson Nano, and more, enabling endless customization and sensor integration.

The XiaoR Geek Smart Robot Car Chassis Kit is a full-metal, 2WD tracked tank platform designed for DIY robotics enthusiasts. Featuring a durable aluminum alloy frame, high-speed motors, and engineering plastic tracks, it offers excellent grip, low noise, and swift mobility. Compatible with popular controllers like Arduino, Raspberry Pi, and Jetson Nano, this kit encourages hands-on learning in robotics and programming, making it ideal for millennials and young professionals aiming to innovate in tech.

Specifications

ASIN	B09C7TK9Y9
Additional Features	Portable
Age Range Description	Youth
Best Sellers Rank	#288,604 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #689 in Robot Parts & Accessories
Brand Name	XiaoR Geek
Color	Black
Customer Reviews	4.1 out of 5 stars 74 Reviews
Educational Objective	To teach users about robotics, programming, and engineering through DIY projects
Included Components	Product Manual, Screwdriver, Track
Item Dimensions	11.81 x 9.06 x 4.88 inches
Item Weight	1.2 kg
Manufacturer	WiFi Robot
Manufacturer Part Number	XR-R
Manufacturer recommended age	16 years and up
Material Type	Metal
Model Name	TH chassis
Model Number	Black chassis
Number of Batteries	1 9V batteries required.
Number of Items	1
Number of Packs	1
Operation Mode	automatic
Power Source	Battery Powered
Set Name	With DC Motor
Size	Encoder Motor
Theme	Science Fiction
Toy Vehicle Form	Car
UPC	713838511784
Unit Count	1 Count

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