Based on the ESP32-WROOM-32 module, supports wireless communication such as WIFI, Bluetooth and ESP-NOW Onboard motor control interfaces for 2x DC motor with encoder or 4x DC motor (2 groups) without encoder Onboard serial bus servos control interfaces for controlling up to 253 ST3215 serial bus servos and obtaining servos feedback Onboard 9-axis IMU to obtain attitude and heading information at any time Supports 7-13V power input, and can be powered directly by 2S or 3S lithium battery module Automatic download circuit for easy uploading programs Support input voltage/current monitoring Onboard TF card slot Onboard Laser Lidar interface and integrated UART to USB function I2C interface for connecting peripherals such as OLED, IMU, and other I2C devices Adapting Multi-functional extended header for additional functions, such as controlling servos or relays Onboard 40PIN GPIO header for connecting and powering the host computer (for / Nano, etc), communicating via serial port or I2C Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Colour:Black Material:PCB Package Contents: 1x Development Boards Kit 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.