Smart Car Stepper DC Motor Drivers Shield L293D Expansion Development Board for UNO-R3

Description

• Smart Car Stepper DC Motor Drivers Shield L293D Expansion Development Board for UNO-R3

Overview:
The Motor Shield is based on the L293, which is a dual full-bridge driver designed to drive inductive loads such as relays, solenoids, DC and stepping motors. It lets you drive two DC motors with your board, controlling the speed and direction of each one independently. You can also measure the motor current absorption of each motor, among other features. The shield is TinkerKit compatible, which means you can quickly create projects by plugging TinkerKit modules to the board.

Summary :

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 function

Power :
The Motor Shield must be powered only by an external power supply. Because the L293 IC mounted on the shield has two separate power connections, one for the logic and one for the motor supply driver. The required motor current often exceeds the maximum USB current rating.

External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The adapter can be connected by plugging a 2.1mm center-positive plug into the 's board power jack on which the motor shield is mounted or by connecting the wires that lead the power supply to the Vin and GND screw terminals, taking care to respect the polarities.

To avoid possible damage to the board on which the shield is mounted, we reccomend using an external power supply that provides a voltage between 7 and 12V. If your motor require more than 9V we recommend that you separate the power lines of the shield and the board on which the shield is mounted. This is possible by cutting the "Vin Connect" jumper placed on the back side of the shield. The absolute limit for the Vin at the screw terminals is 18V.

The power pins are as follows:

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