User-Friendly Design:Designed for beginners. Ease of Development:Comes with complete development tutorials and a Bluetooth APP for efficient PID parameter tuning. Stm32 Driver Board,Stm32 Robot Driver Board,Core Processing Unit:Features the STM32F103RCT6 chip for superior performance and reliable self-balancing control. Versatile Application:Supports K210 vision module integration, enabling AI-powered self-balancing car functions. Multiple Expansion Interfaces:Equipped with a variety of interfaces to support accessories like ultrasonic, Bluetooth, and more. Specification:A:Expansion Kit Color: As shown Material: PC Package Contents: 1 x STM32 Robot Driver Board kit(The words on the product due to different batches, but it not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.