two L293D motor driver chips • four H-bridges • 0.6 A per bridge (1.2 A peak) • thermal shutdown protection • internal kickback protection diodes • up to 4 bi-directional DC motors • up to 2 stepper motors • pull down resistors to keep motors disabled during power-up • separate logic and motor power connections • terminal block connectors for motors and power • motor voltages from 4.5 VDC to 16 VDC • 2 connections for 5 V hobby servos, dimensions: 6.8 cm x 5.5 cm x 2 cm