Fangrui Product Details Description: Stm32f407 Robot Control Board Ros Smart Car Main Control 4wd Radar Obstacle Avoidance For Nano B01 Smart Car Main Control (2wd) Detailed Explanation.the B01 Motherboard Is Designed Based On Intelligent Vehicles And Ros Scenarios, And Can Control Chassis Such As For , Differential, And Track. It Provides Corresponding Codes And Tutorials. The Motherboard Can Communicate With The Outside World Through Serial Port, And Provides A 5v5a Interface For External Power Supply To Boards Such For Or Nano. The Code And Schematic Are All Open Source. B02 Ros Bottom Main Control (4wd) Motherboard Detailed Explanation.b02 Is The Main Control Of The Ros Education Robot. Based On The Ros Application Scenario Design, It Can Control A Variety Of Chassis, Including For , Differential, Mecanum Wheel, Crawler, And So On. All Of Them Provide Corresponding Codes And Tutorials. The Motherboard Can Communicate With The Outside World Through The Serial Port Or Can, And Provide A 5v5a Interface For External Power Suppl