High torque motors are practically just a regular, internally commutated brushless DC Motors mounted with additional gears mechanism, to either increase the torque or to reduce the RPM (Revolutions per minute). These DC motors are quiet powerful and can be used in several hobbyist and industrial application. Read more about High torque motor gear box.
L293D, is a Motor Driver IC which allows the motor to drive on either direction. L293D is a 16-pin IC which can control a set of two DC motors simultaneously in any direction. It means that you can control two DC motor with a single L293D IC.The l293d can drive small and quiet big motors as well, Check the Voltage Specification at the end of this page for more info along with a sample project and L293D IC Logic Description.
Controlling a DC motor from computer with USB Interface.
This a small project on controlling DC motor with USB pic18f4550 interface board with L293D motor controller for beginners. In robotics and controlling stuffs one of the most basic thing is to control your own applications like DC Motors , Stepper Motors , Servo (with pwm) etc etc,In this tutorial A small application [C#] is controlling pic18f4550 USB interface board with computer, enabling to control my board with keyboard to interface with L293D motor driver.
