Smart Robot Car Two Chassis Kit with 4 DC Gear Motors, 4 Speed Encoder Disk Easy to Install and Multi-functional Package for Arduino Projects from Optimus Electric

Smart Robot Car Two Chassis Kit with 4 DC Gear Motors, 4 Speed Encoder Disk Easy to Install and Multi-functional Package for Arduino Projects from Optimus Electric 4 x wheel 4 x DC gear motor 4 x speed encoder disk…