1. Ultrasonic function The HC-SR04 ultrasonic sensor uses sonar like a bat to determine the distance to an object. It provides excellent non-contact range detection with high accuracy and stable readings. It comes with ultrasonic transmitting and receiving modules 2. Anti-skid tire anti-skid ability, which makes it easy to get off the car and maintain balance on the slope. 3. The three-tier structure design automatically turns on the balance algorithm to keep balance at all times 4. Balance control This is a two-wheeled balance car based for the arduino platform. The balance car uses a gyroscope MPU6050 to detect the movement posture of the car in real time. The core control board uses the Keyes PLUS development board compatible for arduino. According to the data obtained from the sensor, after being processed by the PD algorithm, the corresponding control signal is output to the motor drive circuit to realize the balance control of the trolley motor Product Description: Body attitude detection: MPU-6050 Built-in power control switch Comes with Bluetooth control switch to control serial communication Type: balance car kit Processor speed: 16MHz Rated current: ≤0.45A Power supply voltage: DC9-12V Maximum power: 5.4W Purpose: DIY programming kit Featured service: provide routine and technical support Motor parameters Voltage: DC12V Reduction ratio: 1: 30 No-load current: ≤100mA No-load speed: 247rpm Rated torque: 1.4Kg.cm Rated torque: 137.3mN.m Rated speed: 160rpm Rated current: ≤0.45A Stall torque: 5.5Kg, cm Stall current: 2.4A Working voltage: DC9-12V Motor driver chip: TB6612FNG Body attitude detection: MPU-6050 size: 252 x 77 x 120mm Material: plastic colour: black Package Contents: 2 set assembled robot car 2 x Chinese and English instructions 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