Review on LAFVIN Smart Robot Car 2WD Chassis Kit with Ultrasonic Module R3 Board: Arduino Compatible DIY Kit for Remote Control Programming by Brandon Perkins

I have both Elegoo and Uctronics. Elegoo is the best - comes with videos, easy instructions and everything works (I've bought several kits with no problems). They seem to have been so successful that Uctronics and Lafvin copied them - made cheaper versions - and you get what you pay for - as others have said: 1. No clear wiring (good luck it actually works). 2. The battery box is not the right size (looks like the box is 3D painted and too small for the batteries. All in all, buy Elegoo! Do not buy from this company.