VMA207
V. 01 – 05/03/2018
3
©Velleman nv
5.
Overview
VMA207
Motor Control Shield – The VMA207 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 for the motor drivers. The
output enable of the L293D is directly connected to PWM outputs of the Arduino
®
.
two L293D motor driver chips
four H-Bridges
0.6 A per bridge (1.2 A peak)
thermal shutdown protection
internal fly kickback protection diodes
up to 4 bi-directional DC motors
up to 2 stepper motors
pull-down resistors to keep motors disabled during power-up
separate logic and motor power connections
terminal block connectors for motors and power
motor voltages from 4.5 VDC to 16 VDC
2 connections for 5 V 'hobby' servos
dimensions: 68 x 55 x 20 mm
6.
Pin Layout
All 6 analogue input pins are available. They can also be used as digital pins (pins #14 through 19)
digital pin
function
#2, #13
not used
Following pins are only used if the DC/stepper is in use:
digital pin
function
#11
DC motor #1/stepper #1 (activation/speed control)
#3
DC motor #2/stepper #1 (activation/speed control)
#5
DC motor #3/stepper #2 (activation/speed control)
#6
DC motor #4/stepper #2 (activation/speed control)
Following pins are only used if any DC/steppers are in use:
digital pin
function
#4, #7, #8, #12 driving the DC/stepper motors via the 74HC595 serial-to-parallel latch
Following pins are only used if that particular servo is in use:
digital pin
function
#9
servo #1 control
#10
servo #2 control
