1、SOFT RUBBER TIRES: Smart robot car chassis kit is equipped with a gearbox operated N20 geared motor, capable of traveling at high speeds of up to 1.25m/s. Adopts soft rubber tires to drastically reduce the impact of complex terrain. Equipped with an interactive 0.91inch Organic Light Emitting Diode screen. With charging port and automatic download circuit, it can be used while charging. 2、UPS POWER SUPPLY MODULE: UPS power supply module on board INA219 acquisition chip, convenient real time monitoring of battery voltage, charging current. UPS power supply module 3 x tandem 18650 batteries, 7800mAh high capacity, output current is larger, the motor power is stronger. Provide output 5V and 3.3V for expansion of other devices. With anti overcharge, anti over discharge, anti current and short circuit protection. 3、EASY TO USE: The routine code is developed using for IDE, no need to manually configure the compilation environment. ESP32 automatically establishes a WIFI hotspot when it is powered on, and can be connected and logged in to the control page using a cell phone (for Android for iOS) or a computer (for Linux for Windows for OS X), no need to download an app. 4、LOWER COMPUTER ESP32: The lower ESP32 can be used to drive DC motors and bus servos, with onboard Organic Light Emitting Diode screen interface, memory card slot, 9 axes IMU module, WiFi and Bluetooth, which can be used alone even without installing the upper computer.C 5、ALL CODE OPEN SOURCE: Smart robot car chassis can be extended with multiple host computers, using the serial port to transfer JSON format data for control. All code open source and provide rich development documentation and tutorials. Open source extension of the plan drawing and chassis structure drawings , including 3D models , to facilitate secondary development . Item Type: Smart Robot Car Chassis Kit Material: Aluminum Alloy, Rubber Chassis Height: Approx. 25mm / 0.98in Tire Width: Approx. 42mm / 1.65in Tire Diameter: Approx. 80mm / 3.15in Motor Parameters: N20 12V 200RPM X 4 Built In Polymer Lithium Battery: 3pcs 18650 Lithium Battery 7800mAh Charging Time: 1.5 Hours Power: 1.5Wx4 Upper Surface Area 17551mm Organic Light Emitting Diode Screen: 0.91 Inch Running Speed: 1.25m/S Number Of Driving Wheels: 4 Vertical Obstacle Crossing: Approx. 40mm / 1.57in Climbing Angle: 22 Degrees Extreme Turning Radius: 0M (In Situ Spin) Endurance: 1 Hour Remote Control Function: WIFI AP STA Interface Communication Interface: UART, Bus Servo Interface, I2C 1 x Smart Robot Car Chassis 1 x Power Cord 1 x Screwdriver 1 x USB Cable 1 x Expansion Platform 1 x Screw Bag 2 x Wrench 1 x Connection Cable 1 x Development Board