XiaoR Geek Robot Kit WiFi Manipulator Smart Robot Car Kit for Raspberry Pi 3B+,Tank Chassis FPV Camera Programable Robotics Vehicle Kit with 8GB TF Card by iOS Android PC Controlled

I had high hopes to go with that high price.The metal parts were solid and we'll constructed. My happiness ended there.The instructions are scant and poorly organized. There is a video of someone building it with snappy background music. If you pause it periodically, it will get you through the basic assembly.The robot arm uses heavy, strong brackets. That would have been awesome of the stepper motors were strong enough to lift it. One wouldn't even turn on.The tracked base was well built, but again, the motors are underpowered and must be run at high power (and speed) to get it to move. Not good for an indoor robot.The motor control board is proprietary and the only docs I could find are in Chinese.Too bad. I'll buy a track base and build it myself.