Arduino is a good entry-electronic production, with motor expansion board can be a good robot development platform. Here a motor can drive a variety of simple to a slightly complex projects full function expansion board.This is a common DC motor drive module, L293D the chip small current DC motor driver chips. The pin is made Arduino compatible, convenient enthusiasts quickly Arduino-based development.L293D is a monolithic integrated, high voltage, high current, 4-channel driver.Basically this means usin...