Product Details

L293D Motor Driver Shield for Arduino

This L293D Motor Driver Shield for Arduino is probably one of the most versatile on the market and features 2 servo and 4 motor connectors for DC or stepper motors. That makes it a great shield for any robotic project.

The shield contains two L293D motor drivers and one 74HC595 shift register. The shift register expands 3 pins of the Arduino to 8 pins to control the direction of the motor drivers. The output enables the L293D to be directly connected to the PWM outputs of the Arduino.
An L293D:
The L293D motor driver shield includes two L293 motor driver ICs and a 74HC595 shift register IC. The shield has several important components.
The Motor driver:
The L293D is a dual-channel H-bridge motor driver that can control two DC motors or a stepper motor at one time. As there are two L293D ICs on the shield, it’s technically capable of controlling a total of four DC motors.
This is ideal for two and four-wheel robot platforms. The IC consists of two H-bridge to control the motors, each delivering p to 0.6A to a motor.
The Shift Register:
The 74HC595 is an 8-bit serial input and serial/parallel output shift register. It’s used to extend four Arduino GPIO (or another microcontroller) to eight direction control pins for two of the L293D motor driver ICs.
The power supply:
The power supply to the shield can be used for both the shield and Arduino or the two can use separate power supplies. If sharing a common power supply, a power jumper must be placed on the shield. The power supply can be provided through Arduino’s USB port, its DC jack, or from the shield’s 2-pin EXT-PWR block.

Features/Specs:

• 2 connections for 5V ‘hobby’ servos connected to the Arduino’s high-resolution dedicated timer
• 4 H-Bridges: L293D chipset provides 0.6A per bridge (1.2A peak) with thermal shutdown protection, internal kickback protection
• diodes. Can run motors on 4.5VDC to 25VDC.
• Up to 4 bi-directional DC motors with individual 8-bit speed selection (so, about 0.5% resolution)
• Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping.
• Pull-down resistors keep motors disabled during power-up
• Big terminal block connectors to easily hook up wires (18-26AWG) and power
• Arduino reset button brought up top
• 2-pin terminal block and jumper to connect external power, for separate logic/motor supplies
• Tested compatible with Arduino Mega 1280 & 2560, Diecimila, Duemilanove, and UNO

Package includes:

• 1 x L293D Motor Driver Shield for Arduino