How to run stepper motor for particular amount of seconds

[sagarnayakm]

Hello,

In my project i am using stepper motor with nrf52840 and here i want to run my stepper motor for particular amount of time like i want to expel a particular amount of fluid with respective amount of time for example i want to expel 10ml from the tube with 2ml per second since the total amount of time consumed for expelling 10ml is 5 second. so how to implement this anybody have idea on this please feel free to drop your comments.

5556.Spec_STP-60D5016GA (1).pdf

the stepper motor which i am using is STP-60D5016 and for more clarification please have look on  above datasheet. 

thank you. 

[SwRa]

Hi Sagar,

You need to run the stepper motor for a particular amount of time right. For this, perhaps you could try using the timer. You can start the timer (eg. using app_timer) when PWM starts, and then stop the PWM after the timer times out (in the app_timer callback function). 

Regards,

Swathy

[sagarnayakm]

Hello 

thanks for your reply, No actually the stepper motor should run based on the parameter which user inputs like using timer we can not control the speed right so i think we need to implement with pwm only.

thank you.