LAFVIN Mechanical 4WD Robot Arm Smart Car Kit - STEM/Graphical Programming Robot Car Compatible with Arduino IDE - Tutorial Included

I bought for my step daughter who wants to be a electrical engineering like her stepfather. It was a great starting point for her to understand the building process and coding.

Be carefull , large plates ( top and accessories ) are not painted in black and are rowYou have to buy a spray black paint for finish the look of the productI claimed AMAZON to get a discount , rather to try a replacement because I not sure to get a full painted robot

The media could not be loaded. Instructions could be better but I managed to assemble it and tested all the programs except the Bluetooth part because the pin out doesn't match between the hardware and the instructions manual. I didn't want to risk destroying the electronic so I didn't connect the Bluetooth module. Everything else works fine. You will need to buy 2 18650 batteries and a button cell for the infrared remote controller. To have the robot follow the line, you must use the included electric tape.

The photos show the batteries, but none were included. The Amazon box even had battery warning labels on it. The batteries are a special size and they are 3.7 vdc - which is not common.

Doesn't come with batteries or charger, which was not clear from the product description. Some parts of the arm are very prone to breaking. Assembly requires many screws of many different sizes, which makes it difficult. They need to improve the quality of the design for ease of assembly, and the quality of their parts for strength. Also, the instructions are not well translated into English, making some parts unclear.