Keywish Balance Car Robot for Arduino IDE Project Smart Car Kit with Tutorial, Development Board R3 Board, Line Tracking Module, Bluetooth Module, Great Educational Stem Toys for Boys and Girls

Positives: Instructions/Guides appear to be very comprehensive, documenting components as well as schematics of components and codeNegatives: Kit assembly is poorly managed. Ordered 2 kits. First came with ~20% of its components missing (missing instructions, motor driver, wires). Returned and got a replacement. Replacement contained all electronic components... but had wrong screws and screws that were ~4mm too short to actually use. Might be OK if kits were complete