This is an intelligent crawler robot specially designed for the NVIDIA JetBot AI project, based on the Jetson Nano Developer Kit. The expansion board integrates OLED, motor drive circuit, servo drive circuit, power supply circuit, battery protection circuit, etc., which saves you the trouble of welding the circuit, supports unloading charging and does not need to repeatedly remove the battery. The software is fully compatible with the NVIDIA JetBot AI project and supports intelligent obstacle avoidance, autonomous line patrol, motion detection, color recognition tracking, and other functions. The robot is also equipped with a four-degree-of-freedom mechanical arm, which is controlled by a three-dimensional coordinate system and can be flexibly controlled by a wireless gamepad.