Suggest me a way to rotate Potentiometer know through microcontroller

[0killingsoul0]

In one of my project i have to rotate potentiometer knob through microcontroller . I have to distribute the 360 degree rotation of knob in ten steps. Is their any other way without using servo or stepper motor ??

 

[shaiko]

Is their any other way without using servo or stepper motor ??

Maybe,
But what's wrong with using a servo or stepper ?

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Also,
If all you need is variable resistance, you'll do much better with a digital potentiometer instead of rotating a mechanical one...

 

[myrick13]

for me its better to user stepper motor since you are controlling it by steps

 

[0killingsoul0]

I tried with stepper but running a stepper motor is a heck of job. Firstly finding a right sequence to rotate is difficult , then it draws too much current ( about 1 to 1.5 amperes) , thirdly stpper motor i tried with rotates with too much slow speed.


I haven't tried servo, will it be easy doing it? Cant there be some other electro mechanical mechanism to do the job?

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I tried with stepper but running a stepper motor is a heck of job. Firstly finding a right sequence to rotate is difficult , then it draws too much current ( about 1 to 1.5 amperes) , thirdly stpper motor i tried with rotates with too much slow speed.


I haven't tried servo, will it be easy doing it? Cant there be some other electro mechanical mechanism to do the job?

 

[shaiko]

A hobby grade servo is easy to rotate to a desired angle - this is done with a PWM peripherial.
But again, why don't you use a digital potentiometer ?

 

[0killingsoul0]

digital potentiometer ic's are difficult to find here in Pakistan or you will have to import it, which takes time , which i dont have . Can you name some commonly used digital potentiometers so i should have a look at local market?

 

[shaiko]

https://www.digikey.com/product-sea...ta-acquisition-digital-potentiometers/2556350

Control a mechanical potentiometer via a motor that's itlself controlled by an MCU only to generate an analog signal for another electrical system is the correct way to spell: "utterly unreliable".

I suggest you use a digital potentiometer or an MCU with a DAC peripheral (or a seperate DAC IC).

 

[0killingsoul0]

https://www.digikey.com/product-sea...ta-acquisition-digital-potentiometers/2556350

Control a mechanical potentiometer via a motor that's itlself controlled by an MCU only to generate an analog signal for another electrical system is the correct way to spell: "utterly unreliable".

I suggest you use a digital potentiometer or an MCU with a DAC peripheral (or a seperate DAC IC).

Ok i will have a look at local market if i can find one.