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Qunqi L293D Motor Drive Shield For Arduino Duemilanove Mega UNO R3 AVR ATMEL

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Specification:
1.Up to 4 bi-directional DC motors with individual 8-bit speed selection.
2.Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping.
3.4 H-Bridges: per bridge provides 0.6A (1.2A peak current) with thermal protection, can run motors on 4.5V to 12V DC.
4.Pull down resistors keep motors disabled during power-up.
5.2 external terminal power interface, for seperate logic/motor supplies.
6.Tested compatible for Arduino Mega, Diecimila & Duemilanove.

Package include:
1x L293D Motor Drive Shield
L293D is a monolithic integrated, high voltage, high current, 4-channel driver
Basically this means using this chip you can use DC motors and power supplies of up to 12 Volts
The H-Bridge is typically an electrical circuit that enables a voltage to be applied across a load in either direction to an output, e.g. motor.
Thats some pretty big motors and the chip can supply a maximum current of 600mA per channel, the L293D chip is also what’s known as a type of H-Bridge.
Can drive 4 DC motors or 2 stepper motors or 2 Servo.

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