WAVE Flexible and Expandable 4WD Mobile Robot Chassis, Full Metal Body, Multiple Hosts Support, with Onboard ESP32 Module,comatible for 4,Zero, Nano, Nano etc.The WAVE is a full metal body 4WD mobile robot chassis, which features superb off-road crossing ability and shock-absorbing performance, open source all code for secondary development.It supports multiple host computers (, Nano, Nano, etc), the host computer can communicate with the ESP32 slave computer through the serial port.Equipped with four N20 geared motors using a high-quality gearbox, which allows the mobile robot to drive at high speed with great power. Built in 3S UPS power supply module, supports 3 x 18650 Li batteries (in series, NOT included), which provides uninterruptible power for the robot and supports charging and power output at the same time.Built in multi-functional robot driver board, based on ESP32, with onboard WIFI and Bluetooth, for driving serial bus servos, outputting PWM signal, expanding TF card slot, etc.The WAVE adopts flexible rubber tires which greatly reduce the impact of complex terrains, can easily meet the needs of high-speed driving, shock absorption, and off-road. Comes with a mounting plate, can be used to install the host computers (for 4B, for Nano, for Nano, etc.), LD19\/-27L lidar, and pan-tilt camera, providing more possibilities for secondary development.Motor:N20 12V 200RPM x 4Weight:860gDriving payload:0.8kgBattery support:18650 Lithium battery x 3 (NOT Included)Motor power:1.5W x 4Upper surface area:17551mm2OLED screen:0.91inchRunning speed:1.25m\/sNumber of driving wheels:4Vertical obstacle ability:40mmClimbing ability:22Minimum turning radius:0m (In- Rotation)Remote control function:WIFI AP\/STACommunication interface:UART\/serial bus servo interface\/I2CPlug Type:EU Plug,it applies to Indonesia, Germany, France, , Italy and so on.Voltage:AC220VColour:BlackMaterial:PlasticSize:Outline dimensions:194x168x100mm,Chassis height:33.70mm,Tire width:42.50mm,Tire diameter:80mmPackage Contents:1 * Robot Chassis Car1 * USB Cable1 * Power AdapterOnly 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.