Review on Yahboom Professional Programming Electronic Compatible by Steven Harper

This "robot" is a huge waste of money and time. Really just a junk box. The ultrasonic sensor was crushed. Identifying and sorting screws, bolts and racks takes a few days at best. The instructions provided do not mention which size components to use for each step. There are some instructions, but without labeled screws and parts, the instructions are as useless as junk in a box. Only 4 bronze posts were supplied, according to the "instructions" many more screws, bolts and posts are required. A broken robot shield has caused a house fire, use at your own risk! It appears that Revain suppliers ship junk to international destinations as actual returns/refunds are not possible. I am suspending my Revain purchases because the last 3 items shipped were defective. No return, no return. Theft and fraud in my opinion.