The 2WD Mobile Robot Platform for Arduino is a small, low-cost mobile platform for use with a standard Arduino microcontroller. The robot comes as a kit which includes two drive motors, wheels (and rear caster ball), frame, and all mounting hardware. The main structure and mechanical parts for a robot.

This DFRobot mobile robot platform is widely used as self-developed control chasis for Arduino platforms and other control boards. This kit features the following: two differential drives, near zero turning radius, high-strength aluminum-alloy body material, motors, and a flexible rubber wheel makes it suitable for indoor flat road surface and flat-platform robot competitions. The top layer includes a standard servo socket and the three optional sensor holder. This three sensor holder fits with our adjustable IR range sensor. The servo can be used for a simple rotation platform, two degrees of freedom camera holder, or even a robotic arm. 

To make this lovely robot run, you will need a motor controller and microcontroller board. Our Romeo V2-All in one Controller is an ideal candidate for this, it includes an Arduino compatible platform directly programable via USB, a motor controller with an external power option, integrated optional buttons and sensor connection sockets like our famous expansion shields.

This mobile robot platform is in Michael Margolis book "Make an Arduino-Controlled Robot". 

• 2WD mobile robot development platform for Arduino
• Low-cost Arduino compatible microcontroller mobile platform
• Two differential drive
• Caster ball included
• Complete chassis with mounting hardware
• Dimensions: 170mm （6.69 in) diameter base 
• Weight: 445g
• Further motor specifications on the product page (FIT0016 TT Geared Motor with Back Shaft)

• Gravity:TT Motor Encoders Kit  (SEN0038)
• Romeo V2(DFR0225) 

• WIKI (2WD Mobile Platform for Arduino (SKU: ROB0005))
• Assembly Manual

• Rubber Wheel (FIT0003) x2
• Micro DC Geared Motor (FIT0016) x2
• Chassis x1