TECNOIOT L293D Motor Drive Shield Expansion Board for Duemilanove UNO Mega

Description

L293D Smart Car Stepper DC Motor Drivers Shield L293D Expansion Development Board

Operating Voltage: 5V to 12V
Motor controller: L293D, Drives 2 DC motors or 1 stepper motor
Max current: 2A per channel or 4A max (with external power supply)
Current sensing: 1.65V/A
Free running stop and brake function

Input and Output

This shield has two separate channels, called A and B, that each use 4 of the Arduino pins to drive or sense the motor. In total there are 8 pins in use on this shield. You can use each channel separately to drive two DC motors or combine them to drive one bipolar stepper motor.

The shield’s pins, divided by channel are shown in the table below:
Function pins per Ch. A pins per Ch. B
Direction D12 D13
PWM D3 D11
Brake D9 D8
Current Sensing A0 A1

If you don’t need the Brake and the Current Sensing and you also need more pins for your application you can disable this features by cutting the respective jumpers on the back side of the shield. The additional sockets on the shield are described as follow:Screw terminal to connect the motors and their power supply.
2 TinkerKit connectors for two Analog Inputs (in white), connected to A2 and A3.
2 TinkerKit connectors for two Aanlog Outputs (in orange in the middle), connected to PWM outputs on pins D5 and D6.
2 TinkerKit connectors for the TWI interface (in white with 4 pins), one for input and the other one for output. 
PACKET CONTAINS:

1pc x L293D Expansion Development Board