i want to control speed of DC motor using arduino via matlab.

i want to control speed of DC motor using arduino via matlab. I am not using any extra circuitry to control speed of motor. i tried to do it with analogWrite but it didn't work it just controlled the duty cycle of the motor. i need some command through which I can directly control the speed of motor. i am using arduino uno as an interface between motor and matlab. can any one suggest something that may help?

Answer 1

[Manikandan]

use PWM

[Mani Shankar]

for speed = 0:-0.1:1 writePWMDutyCycle(a,9,speed); pause(0.5); end

Answer 2

[Madhu Govindarajan]

This video should help you do the same using Adafruit Motor shield - https://www.youtube.com/watch?v=H1KPlms7s90&list=PLn8PRpmsu08p0r0uLo8vcxvQqHUlY6lkQ&index=19